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Carbon sequestration amount evolution characteristics and reaction mechanisms in coal-based solid waste backfill:A new whole-process carbon sequestration technique 认领 引用 被引量：2
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作者 Nan Zhou Jixiong Zhang +1 位作者 Yuzhe Zhang Hao Yan 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2026年第1期43-55,共13页
Underground carbon sequestration(CS)by solid waste backfill(SWB)offers an effective pathway for collaborative disposal of coal-based solid waste and CO2,where the amount of carbon sequestration is an important eval... Underground carbon sequestration(CS)by solid waste backfill(SWB)offers an effective pathway for collaborative disposal of coal-based solid waste and CO2,where the amount of carbon sequestration is an important evaluation parameter.In this study,the concept of whole-process carbon sequestration using coal-based solid waste and CO2,including sequential stirring and curing stages,was proposed to evaluate the performance evolution of CS.The results showed that CO2 pressure and ambient temperature positively correlated with the CS amount from coal-based SWB.In particular,CO2 pressure prevailed in the stirring stage,while the ambient temperature effect was more significant in the curing stage.The CS amounts obtained during the stirring stage alone,the curing stage alone,and two sequential stages ranged from 0.66%–3.10%,3.53%–5.09%,and 5.12%–6.02%,respectively.The functional group and micromorphology analyses revealed that the prevailing mechanism at the CS stirring stage was the stirringdriven gas dissolution-leaching-mineralization reaction,while that at the curing stage was the hydration-driven gas permeation-dissociation-CS reaction.Both were essentially solid-liquid-gas multiphase chemical reactions.The results are instrumental in substantiating the coal-based SWB carbon sequestration evolution patterns and mechanisms and providing data support for waste disposal and carbon emission reduction in the coal industry. 展开更多
关键词 Whole-process carbon sequestration Stirring stage Curing stage Carbon sequestration performance evolution Ambient temperature CO2pressure
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Engineering tuber crops for carbon sequestration:genetic improvement strategies and technological advances 认领 引用
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作者 Zhihua Mu Shuya Yang +5 位作者 Ke Deng Tiancang Na Heng Guo Yun Zhou Long Zhao Jian Wang 《Tropical Plants》 CSCD 2026年第1期49-60,共12页
Root and tuber crops(RTCs),such as potato,cassava,and sweet potato,are globally critical staple foods and exhibit substantial potential for carbon sequestration.Their unique source-sink-flow synergy,high photosyntheti... Root and tuber crops(RTCs),such as potato,cassava,and sweet potato,are globally critical staple foods and exhibit substantial potential for carbon sequestration.Their unique source-sink-flow synergy,high photosynthetic efficiency,and underground carbon storage capacity make them pivotal for climate change mitigation.However,RTCs face inherent bottlenecks:inefficient C3 photosynthesis with photorespiratory losses,source-sink imbalance,and inadequate low-carbon management practices.To address these limitations,this review synthesizes genetic engineering strategies(e.g.,optimizing Rubisco function,introducing C4/CAM pathway elements,enhancing sink strength via AGPase and sugar transporters),and improved field management(e.g.,balanced fertilization,crop rotation,biochar application,and IoT-based precision agriculture).These integrated approaches synergistically boost carbon fixation,optimize carbon allocation,and strengthen soil carbon sinks.RTCs thus represent a promising avenue to reconcile food security with carbon neutrality goals,providing actionable pathways for developing climate-resilient and sustainable agricultural systems globally. 展开更多
关键词 carbon storage c photosynthesis carbon sequestration photosynthesis carbon sequestrationtheir root tuber crops root tuber crops rtcs such genetic engineering
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Neglected but significant:High mercury alkylation but low carbon sequestration in paddy field as revealed by soil profiles survey 认领 引用
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作者 Kaikai Fang Yan He +3 位作者 Shengting Rao Jian Wang Jianming Xu Jiachun Shi 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第5期301-310,共10页
The global environmental crisis caused by simultaneous increasing mercury(Hg)alkylation and organic carbon deficit has restricted the implementation of the“One Health”framework.Here,we report a neglected but signifi... The global environmental crisis caused by simultaneous increasing mercury(Hg)alkylation and organic carbon deficit has restricted the implementation of the“One Health”framework.Here,we report a neglected but significant phenomenon of high Hg alkylation but low carbon sequestration in paddy field through soil profiles survey deep to the parent material horizon(defined as deepsoil).We found that ratios of Hg methylation and ethylation were increased by 69.0%and 64.2%in deepsoil compared to that in topsoil(P<0.05).This inhibition of Hg alkylation in topsoil is likely regulated by Nitrosomonadaceae(enriched by 64.9%vs.deepsoil),which harbors the merA gene(Hg demethylation marker).Furthermore,through deciphering molecular level of dissolved organic matter,we found the content of labile carbon increased by 12.7%,compared to those in topsoil.Conversely,in deepsoil,labile carbon(e.g.,carbohydrates)enriches Spirochaetaceae(abundance+69.2%,carrying the hgcA gene for Hg methylation),thereby facilitating Hg alkylation.This microbial shift enhanced Hg alkylation in deepsoil relative to topsoil.In summary,this study bridges human health,microbial ecology,and climate resilience(carbon storage)within the“One Health”paradigm,revealing depth-dependent mechanisms that reconcile soil Hg remediation with carbon management for sustainable agroecosystems. 展开更多
关键词 Dissolved organic matter(DOM) Methylmercury(MeHg) Ethylmercury(EtHg) Organic carbon sequestration Paddy soil
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Positive or negative relationship between forest fragmentation and carbon sequestration capacity across different urban agglomerations in China 认领 引用
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作者 Xinyu Wang Zhibin Ren +4 位作者 Chengcong Wang Peng Zhang Shengyang Hong Ruoxuan Geng Boyang Zhang 《Journal of Forestry Research》 SCIE EI CAS CSCD 2026年第3期159-179,共21页
Forest fragmentation is a key ecological process influencing the functions of forest ecosystems,particularly in the context of rapid urbanization.However,at the national scale,the regional changes of forest fragmentat... Forest fragmentation is a key ecological process influencing the functions of forest ecosystems,particularly in the context of rapid urbanization.However,at the national scale,the regional changes of forest fragmentation and its effects on forest carbon sequestration capacity(CSC)remain unclear in urban agglomerations.Based on the established Forest Fragmentation Index(FFI),this study assessed the regional heterogeneity of forest fragmentation and systematically analyzed the nonlinear response of CSC to FFI,using a piecewise linear regression model,an XGBoost-SHAP framework,and PLS-SEM.We found that the average FFI across all urban agglomerations was 0.45,with 54.96%of the area exhibiting moderate fragmentation(FFI=0.4−0.6).The average FFI in urban agglomerations was highest in subtropical monsoon climate(SMC)zones and lowest in temperate continental climate(TCC)zones.CSC showed a distinct spatial pattern of“stronger in low latitudes and coastal(eastern)regions,weaker in high latitudes and inland(western)regions”.Nationally,34.4%of the regions exhibited CSC levels ranging from 400 to 600 g·m-2·a-1,with the highest mean CSC in SMC and the lowest in TCC.We identified clear FFI thresholds affecting CSC across different climate zones:0.48 in TCC,0.39 in temperate monsoon climate(TMC),and 0.36 in SMC.While low levels of fragmentation may have marginal positive effects,high fragmentation significantly threatens CSC.Moreover,in the TCC zone,temperature was the dominant driver,with FFI enhancing CSC primarily through positive pathways mediated by temperature and leaf area index(LAI).In contrast,in the TMC and SMC zones,evapotranspiration(ET)was the dominant factor,and FFI suppressed CSC by reducing LAI and ET.This study reveals the complex mechanisms by which forest fragmentation,coupled with multiple factors,drives CSC,providing scientific insights for urban forest management and carbon neutrality policies. 展开更多
关键词 Urban agglomerations Climate zones Forest fragmentation Carbon sequestration capacity
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Spatiotemporal Patterns and Drivers of Vegetation Carbon Sequestration in Shandong Province,China 认领 引用
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作者 WEI Feili LIU Dahai +6 位作者 WU Shuyao LYU Shuang HAN Zhibo WANG Yongxun REN Yongqiang LI Xiaoxuan LIU Zhenhang 《Chinese Geographical Science》 SCIE CAS CSCD 2026年第1期157-170,I0008-I0014,共14页
Understanding the dynamics of vegetation carbon sequestration(VCS)is essential for regional carbon neutrality strategies.This study revealed the spatiotemporal patterns of VCS and its relationship with anthropogenic c... Understanding the dynamics of vegetation carbon sequestration(VCS)is essential for regional carbon neutrality strategies.This study revealed the spatiotemporal patterns of VCS and its relationship with anthropogenic carbon emissions(ACEs)in Shandong Province,China during 2000-2020,and identified the sensitivity factors affecting VCS.The results show that:1)VCS increased consistently from 193.45 million t to 256.41 million t,with high values areas concentrated in the central,northeastern,and southeastern mountainous and hilly regions,while low values were found in water bodies and urban built-up areas.At the city level,Linyi,Yantai,Binzhou,and Jinan experienced the most significant rises-reaching up to 243000 t/yr.At the county level,Pingdu,Qixia,and Yiyuan also showed substantial growth,each exceeding 30400 t/yr.2)Digital Elevation Molde(DEM)was identified as the dominant natural factor influencing VCS distribution,while land use optimization measures,especially afforestation and farmland conversion in sloped terrain,were the primary human drivers of VCS increase.3)Urbanization and carbon neutrality were not mutually exclusive.While urban expansion locally reduced VCS,rural emigration enhanced carbon sinks in surrounding areas,partially offsetting urban losses.This compensatory mechanism supported VCS increases in nearly all cities and 90% of counties.Nevertheless,with ACEs continuing to rise and the offset ratio by VCS declining,achieving carbon neutrality requires regional strategies that integrate with accelerated energy conservation,emission reduction technologies,and energy transition.These findings provide a scientific basis for decomposing carbon neutrality targets across cities and counties in Shandong and a reference for developing localized land use policies in similar regions. 展开更多
关键词 vegetation carbon sequestration(VCS) anthropogenic carbon emissions(ACEs) carbon neutrality targets land use management Shandong Province,China
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Effect evaluation of carbon sequestration of grassland ecological compensation policy:Evidence from China’s Yellow River Basin 认领 引用
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作者 Xiao Zhang Daoxiong Chen Shunbo Yao 《Chinese Journal of Population,Resources and Environment》 CSCD 2026年第1期27-40,共14页
The Grassland Ecological Compensation Policy(GECP)is a large-scale project that has been investing in China since 2011.Despite the significant investment and long duration of the GECP,its impact on carbon sequestratio... The Grassland Ecological Compensation Policy(GECP)is a large-scale project that has been investing in China since 2011.Despite the significant investment and long duration of the GECP,its impact on carbon sequestration in grasslands remains unclear.Based on panel data from prefecture-level cities in the Yellow River Basin(YRB)from 2000 to 2020,this study explored the effects of the GECP on grassland carbon sequestration in the YRB and its heterogeneity using a time-varying difference-in-differences(TV-DID)model.Subsequently,we predicted changes in carbon sequestration in grasslands under the influence of the GECP from 2021 to 2040 using a simulation.The main conclusions are as follows:First,the implementation of the GECP promoted carbon sequestration in grasslands.This conclusion was validated after conducting a series of robustness tests.Moreover,the effects of the GECP were heterogeneous across different geographical locations,highway densities,and grassland areas.Finally,the simulation results indicated that over the next 20 years,grassland carbon sequestration will generally increase but exhibit cyclical changes.The government should align the principles and objectives of the GECP with local geographic conditions,resource availability,and socio-economic development.It must formulate and implement tailored policies that maximize the ecological protection benefits of the GECP and promote carbon sequestration in the grasslands of the YRB. 展开更多
关键词 Grassland ecological compensation policy Grassland carbon sequestration Time-varying difference-in-differences model Heterogeneity analysis Simulation test
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Bridging Land and Ocean–An initiative for coastal wetland carbon sequestration under the UN Ocean Decade Global ONCE Program 认领 引用
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作者 Si-yuan Ye Hans Brix +3 位作者 Liu-juan Xie Brian Keith Sorrell Carles Ibáñez Nian-zhi Jiao 《China Geology》 CAS CSCD 2026年第1期219-220,共2页
On July 2nd,2025,32 scientists representing 15 countries gathered at Tartu,Estonia to make on-site endorsements for the Global ONCE(Ocean Negative Carbon Emissions)Program at the 12th INTECOL Wetlands Conference.Th... On July 2nd,2025,32 scientists representing 15 countries gathered at Tartu,Estonia to make on-site endorsements for the Global ONCE(Ocean Negative Carbon Emissions)Program at the 12th INTECOL Wetlands Conference.This marks a significant milestone for ONCE in establishing a systematic framework for coastal wetland carbon sequestration research and global collaboration(Figs.1,2).Coastal wetlands are critical transition zones linking terrestrial and marine ecosystems,yet they face severe degradation from anthropogenic land-based activities and sea level rise that propagate impacts to the ocean.As a UN Ocean Decade Program,the Global ONCE Program champions interdisciplinary and cross-regional collaboration to enhance carbon sequestration in the ocean and coastal wetlands through science and innovation.Aligned with the Tartu Declaration on Wetlands that includes resolutions to promote the rights of global wetlands(especially peatlands)and advance the discipline of wetland science based on facts,this initiative addresses key knowledge gaps in land-ocean interactions.The goal is to harness the full potential of coastal wetlands and ocean systems for climate mitigation,thereby laying a scientific foundation for international policy formulation and implementation. 展开更多
关键词 coastal wetlands carbon sequestration ocean negative carbon emissions climate mitigation Tartu Declaration establishing systematic framework interdisciplinary collaboration UN Ocean Decade
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Chemical fertilizer and liming-induced changes in aluminum,iron oxides and soil organic carbon fractions:Implications for carbon sequestration in an upland red soil 认领 引用
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作者 Mahmoud Abdelaziz Zhe Shen +9 位作者 Dongchu Li Lu Zhang Dong Ai Jun Yan Kiya Adare Tadesse Imtiaz Ahmed Chu Zhang Chunhong Wu Jiwen Li Huimin Zhang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第8期3412-3426,共15页
Lime application represents an established approach for ameliorating soil acidity,and understanding its effects on the interactions between aluminum(Al)and iron(Fe)oxides and soil organic carbon(SOC)fractions is essen... Lime application represents an established approach for ameliorating soil acidity,and understanding its effects on the interactions between aluminum(Al)and iron(Fe)oxides and soil organic carbon(SOC)fractions is essential for promoting sustainable agricultural practices that enhance carbon sequestration.This investigation examined the interactions among Al and Fe oxides and SOC fractions under long-term fertilization and liming.A long-term field experiment was implemented with five treatments:CK(no fertilizer),N(nitrogen fertilizer),NCa(N plus lime),NPK(nitrogen,phosphorus,and potassium fertilizer),and NPKCa(NPK plus lime).Soil samples were obtained from three depths:0-10,10-20,and 20-30 cm.The findings revealed that lime application increased SOC by 20.84%under the N treatment but decreased SOC by 9.97%under NPK.At the 0-10 cm depth,dissolved organic carbon(DOC)was substantially higher under NCa(410.51 mg kg-1)and NPKCa(372.83 mg kg-1)compared with CK.Particulate organic carbon(POC)and mineral-associated organic carbon(MAOC)demonstrated consistent enhancement under NPK and NPKCa across all soil depths compared with CK.DOC exhibited significant positive correlations with both aluminum(Ald),reactive aluminum(Alo)and aluminum(Alp),indicating a key role of organically bound and reactive Al in carbon dynamics.Compared to the CK treatment,SOC stock increased significantly by 43.49%under NPK and by 36.82%under NPKCa.Structural equation modeling demonstrated that lime application mitigated the negative effects of free Al(Ald)on carbon sequestration,while Fe oxides(Fed)contributed positively to SOC stabilization.DOC showed no significant impact on carbon sequestration rate(CSR),while easily oxidizable carbon(EOC)negatively affected CSR directly.These results highlight the crucial role of lime in improving acidic soil conditions and enhancing the stability and sequestration of soil organic carbon. 展开更多
关键词 nitrogen fertilizer lime carbon fraction carbon sequestration aluminum and iron oxide
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Sustainable alternative to biochar:Effects of oxychar on soil carbon sequestration pathway and microbial communities 认领 引用
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作者 Cheng Ji Chenchen Zhao +8 位作者 Shutao Wang Qinggang Meng Huiwei Zhao Yifan Li Duo Li Mingzhen Xing Shiming Su Bing Han Wei Liu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第5期823-833,共11页
The rapid development of agriculture poses significant challenges to carbon sequestration and sustainable agriculture due to frequent plowing cultivation,has resulted in a notable decline in soil quality.The applicati... The rapid development of agriculture poses significant challenges to carbon sequestration and sustainable agriculture due to frequent plowing cultivation,has resulted in a notable decline in soil quality.The application of carbon materials is regarded as a synergistic and effective approach for conserving organic carbon,increasing microbial activity,and promoting plant growth.To explore whether oxychar can serve as a substitute for traditional biochar(HBC)in enhancing soil carbon sequestration,a method combining a 680-day field experiment with a pot experiment was adopted to assess the impacts of oxychar on soil carbon sequestration,microbial communities,and rape growth.The study revealed that the addition of oxychar reduces soil pH,increases soil electrical conductivity and CO2emissions,and achieves carbon sequestration by increasing the content of readily oxidizable organic carbon in the soil.The soil carbon pool management index of the oxychar treatment(131.32)was significantly higher than that of the traditional biochar treatment(101.93),indicating that oxychar has higher ability to improve soil organic carbon quality.Both the oxychar and HBC treatments improved the richness and diversity of the soil bacterial community.However,oxychar indirectly influenced the soil microbial community by increasing soil electrical conductivity and promoted soil carbon sequestration through carbohydrate metabolism.And,oxychar could promote plant growth in many ways.In general,this study provides a theoretical basis for the practical application of oxychar replacing HBC in soil carbon sequestration. 展开更多
关键词 Oxychar Biochar Soil carbon sequestration Microbial community
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How different thinning can improve carbon sequestration,carbon stock and mechanical stability in peri-urban mixed forest stands:a study case in Mediterranean environment 认领 引用
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作者 Ugo Chiavetta Paolo Cantiani 《Journal of Forestry Research》 SCIE EI CAS CSCD 2026年第1期138-151,共14页
Peri-urban plantations in the Mediterranean are often degraded due to human inactivity and climate change,leading to a loss of ecosystem services and biodiversity.This study investigates the impact of different thinni... Peri-urban plantations in the Mediterranean are often degraded due to human inactivity and climate change,leading to a loss of ecosystem services and biodiversity.This study investigates the impact of different thinning practices on carbon sequestration and tree stability in a degraded periurban plantation in the Italian Apennines,six years after thinning.Three treatments were compared:(a)moderate thinning from below(-25%biomass),representing the typical practice;(b)intense selective thinning(-35%biomass),representing an innovative approach;and(c)no management as the control.Growth projections were used to estimate carbon recovery for these treatments,based on site-specific models calibrated with real data.The results show that both thinning approaches increased carbon sequestration over time,with the innovative thinning achieving a 7%higher annual carbon sequestration rate than traditional thinning and 8%more than the control.Estimated payback times were9 years for recovering the harvested volume in both thinning approaches,10 years for innovative thinning to surpass traditional thinning,17 years for innovative thinning to surpass the control,and 24 years for traditional thinning to surpass the control.Additionally,tree mechanical stability improved significantly in both thinning treatments after two years,with further increases observed in the innovative thinning group after six years.These results suggest that selective thinning can accelerate forest recovery and carbon sequestration,especially in areas with high stem density,where it can reduce the negative impacts of tree mortality and deadwood accumulation.However,careful planning is required to mitigate potential short-term stability is sues,particularly in challenging environments(e.g.,windy conditions,steep slopes).Forest management strategies should therefore aim to balance growth,carbon storage,and tree stability,considering both long-term sustainability and local environmental conditions.The findings are particularly relevant for current climate change mitigation strategies,emphasizing that thinning should be carefully tailored to forest type and conditions to maximize benefits in carbon credit generation and sustainable forest management practices. 展开更多
关键词 Peri-urban plantations Carbon sequestration Thinning Payback time Tree mechanical stability
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Effects of electrical conductivity,acidity,and organic matter on carbon sequestration ability of soils beneath Amygdalus scoparia and Ephedra procera 认领 引用
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作者 Zahra KARIMPOUR Hossein SADEGHI 《中国水土保持科学（中英文）》 CSCD 北大核心 2026年第2期258-268,共11页
[Objective]Carbon sequestration in plants and soils plays a crucial role in the carbon cycle,contributing to the reduction of carbon dioxide levels and enhancing soil productivity.Identifying plant species with high c... [Objective]Carbon sequestration in plants and soils plays a crucial role in the carbon cycle,contributing to the reduction of carbon dioxide levels and enhancing soil productivity.Identifying plant species with high carbon sequestration potential is essential for the restoration and maintenance of rangelands.[Methods]This study examined carbon sequestration in various plant organs—roots,stems,and leaves—of two plant species:wild almond(Amygdalus scoparia)and Ephedra(Ephedra procera).In addition,soil characteristics and carbon sequestration levels were assessed by collecting soil samples from depths of 0-15 cm and 15-30 cm,both at the base of plants and in the inter-plant spaces.In this study,the first experiment comprised two factors:plant species(A.scoparia and E.procera)and plant organs(leaves,stems,and roots).The second experiment also had two factors.The first factor was three types of soil masses(collected at the bases of A.scoparia,E.procera,and the control),and the second factor was soil sampling depth(0-15 cm and 15-30 cm).The study was conducted in the Dolatabad region of Fars Province,Iran.[Results]Soil beneath A.scoparia had higher levels of organic carbon,organic matter,and carbon sequestration than E.procera and control soils.Furthermore,the 0-15 cm depth showed greater levels of these factors than the 15-30 cm depth.As soil depth increased,organic carbon,organic matter,and carbon sequestration decreased,while soil acidity increased.However,soil moisture content did not significantly vary between the two depths.Soil type and depth had significant effects on electrical conductivity.The control soil exhibited a significantly higher electrical conductivity than E.procera and A.scoparia soils.Additionally,average values indicated that electrical conductivity was significantly greater at the soil surface.Notably,both depths of the control soil showed the highest conductivity among all treatments,with the control differing significantly from the other groups.High electrical conductivity in the soil may indicate high salinity levels.Soils beneath A.scoparia and E.procera showed significant differences in clay content between the two soil depths,with the 0-15 cm depth exhibiting the highest clay content among all treatments.[Conclusions]A.scoparia is found to store significantly higher amounts of organic carbon and organic matter in its tissues than E.procera.The cultivation of A.scoparia is highly feasible due to its high tolerance to drought,whereas other water-dependent species may require extensive management if cultivated in vast areas of rangelands.Organic carbon plays a more significant role than organic matter in determining the extent of carbon sequestration in the soil.Soil texture,particularly clay content,emerges as one of the most influential factors in carbon sequestration. 展开更多
关键词 carbon sequestration organic carbon soil texture environmental management
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Integrated theory and technology for carbon sequestration and resource utilization via flue gas injection into coal mine goafs 认领 引用
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作者 Wenhao Deng Sichen Liu +4 位作者 Xuefeng Wang Chaoyu Hao Yansheng Wang Wenhao He Zhixin Jin 《International Journal of Coal Science & Technology》 SCIE EI CAS CSCD 2026年第2期237-256,共20页
Coal is crucial to China’s economic and social development.The two primary factors hindering the high-quality development of China’s coal industry are safety and emissions.Methane and coal spontaneous combustion hav... Coal is crucial to China’s economic and social development.The two primary factors hindering the high-quality development of China’s coal industry are safety and emissions.Methane and coal spontaneous combustion have long posed major safety risks.Competitive adsorption experiments with coal and rock samples exposed to single-component and multi-component flue gases revealed that a mixture of N2,CO2,SO2,and NOX is optimal for oxygen isolation,fire prevention,and gas displacement.Thermodynamic studies further identified the ideal fire prevention formula as 79%N2,8%–20%CO2,0.0006%–0.001%SO2,and 0.001%–0.0018% NOX.Molecular simulations and quantum chemical analyses showed that coal and rock exhibit stronger interactions with CO2 than with N2,CH4,or O2,enabling CO2 to preferentially occupy adsorption sites and displace O2 and CH4.These findings explain the mechanisms behind oxygen isolation,fire prevention,and gas displacement and highlight the strong affinity of coal’s functional groups for CO2,which contributes to carbon sequestration.Adsorption experiments on over 280 coal and 130 rock samples from 11 provinces found that each ton of coal can sequester 7–11 kg of CO2,while each ton of mudstone adsorbs 6–8 kg.Coal-rock in goaf areas exhibits even greater sequestration capacity.Three key technological breakthroughs were made:(1)flue gas injection technology for fire prevention and gas displacement,(2)high-reliability multi-phase flue gas transport technology,and(3)a safety assurance and intelligent control system for gas injection.In 2023,these technologies were successfully applied in a National Energy Group project,reducing CO2 concentration from 10%to 18%to below 0.01%in return air,achieving an annual sequestration capacity of 12,800 tons of CO2 per unit. 展开更多
关键词 Power plants flue gas Coal mine goaf Fire prevention and gas displacement Carbon dioxide sequestration Multiphase flue gas transport technology
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Carbon sequestration potential and mechanisms of shotcrete for tunnel support in underground metal mines through cement hydration 认领 引用 被引量：3
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作者 Qiusong Chen Chao Zhang +2 位作者 Daolin Wang Yikai Liu Chongchong Qi 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2025年第7期1496-1506,共11页
Growing concerns about greenhouse gas emissions from underground mining have intensified the need for carbon reduction strategies at every stage.Shotcrete used in tunnel support presents a promising opportunity for ca... Growing concerns about greenhouse gas emissions from underground mining have intensified the need for carbon reduction strategies at every stage.Shotcrete used in tunnel support presents a promising opportunity for carbon emission reduction.This study investigates the carbon absorption capacity,mechanical strength,and underlying mechanisms of shotcrete when exposed to varying CO2concentrations during the mine support process.Findings reveal that higher CO2concentrations during the initial stages of carbonation curing enhance early strength but may impede long-term strength development.Shotcrete samples exposed to 2vol%CO2for 14 d exhibited a carbonation degree approximately three times higher than those exposed to 0.03vol%CO2.A carbonation layer formed in the shotcrete,sequestering CO2as solid carbonates.In practical terms,shotcrete in an underground return-air tunnel absorbed 1.1 kg·m2of CO2over 14 d,equivalent to treating 33 m3of contaminated air.Thus,using shotcrete for CO2curing in return-air tunnels can significantly reduce carbon emissions,contributing to greener and more sustainable mining practices. 展开更多
关键词 green mine shotcrete support carbon sequestration carbon absorption cement hydration
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Enhancing carbon sequestration and greenhouse gas mitigation in semiarid farmland:The promising role of biochar application with biodegradable film mulching 认领 引用 被引量：3
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作者 Jinwen Pang Zhonghong Tian +9 位作者 Mengjie Zhang Yuhao Wang Tianxiang Qi Qilin Zhang Enke Liu Weijun Zhang Xiaolong Ren Zhikuan Jia Kadambot H.M.Siddique Peng Zhang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第2期517-535,共19页
Long-term mulching has improved crop yields and farmland productivity in semiarid areas,but it has also increased greenhouse gas(GHG)emissions and depleted soil fertility.Biochar application has emerged as a promising... Long-term mulching has improved crop yields and farmland productivity in semiarid areas,but it has also increased greenhouse gas(GHG)emissions and depleted soil fertility.Biochar application has emerged as a promising solution for addressing these issues.In this study,we investigated the effects of four biochar application rates(no biochar(N)=0 t ha-1,low(L)=3 t ha-1,medium(M)=6 t ha-1,and high(H)=9 t ha-1)under film mulching and no mulching conditions over three growing seasons.We assessed the impacts on GHG emissions,soil organic carbon sequestration(SOCS),and maize yield to evaluate the productivity and sustainability of farmland ecosystems.Our results demonstrated that mulching increased maize yield(18.68-41.80%),total fixed C in straw(23.64%),grain(28.87%),and root(46.31%)biomass,and GHG emissions(CO2,10.78%;N2O,3.41%),while reducing SOCS(6.57%)and GHG intensity(GHGI;13.61%).Under mulching,biochar application significantly increased maize yield(10.20%),total fixed C in straw(17.97%),grain(17.69%)and root(16.75%)biomass,and SOCS(4.78%).Moreover,it reduced the GHG emissions(CO2,3.09%;N2O,6.36%)and GHGI(12.28%).These effects correlated with the biochar addition rate,with the optimal rate being 9.0 t ha-1.In conclusion,biochar application reduces CO2 and N2O emissions,enhances CH4 absorption,and improves maize yield under film mulching.It also improves the soil carbon fixation capacity while mitigating the warming potential,making it a promising sustainable management method for mulched farmland in semiarid areas. 展开更多
关键词 biochar film mulching greenhouse gas emissions carbon sequestration
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Flow path simulation and diffusion effect evaluation of carbon sequestration services coupled with the SPANs and BBNs models 认领 引用 被引量：3
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作者 Lilei Zhou Qiongyao Chang +5 位作者 Dongjie Guan Lei Wu Xiujuan He Xinyu Liu Kangwen Zhu Liudan Jiao 《Ecological Frontiers》 CSCD 2025年第3期610-620,共11页
The carbon sequestration function of ecosystem services has significantly contributed to mitigating global climate change,garnering widespread attention from researchers.Understanding the spatial flow processes of car... The carbon sequestration function of ecosystem services has significantly contributed to mitigating global climate change,garnering widespread attention from researchers.Understanding the spatial flow processes of carbon sequestration services and their ecological radiation effects is critical for advancing China's“dual carbon”goals and fostering regional ecological civilization and green sustainable development.Taking the Yangtze River Basin as the study area,this research simulated the flow path of carbon sequestration services under multiple scenarios by integrating the Service Path Attribute Networks(SPANs)framework with the Bayesian Belief Networks(BBNs)model.The study further employed the gravity model and the Two-Step Floating Catchment Area(2SFCA)method to evaluate the diffusion effects of carbon sequestration services both within and beyond the region.Finally,the carbon sequestration optimization space was categorized into distinct types.The results revealed that different carbon peak scenarios exerted varying impacts on the flow processes of carbon sequestration services.Among these,the high-speed carbon peak scenario demonstrated the most balanced relationship between the supply and demand of carbon sequestration services,while the low-speed carbon peak scenario exhibited the most strained relationship.From 1990 to 2030,the internal and external diffusion effects of carbon sequestration services in the Yangtze River Basin exhibited an initial increase followed by a decline.The internal diffusion effect was more pronounced in the upstream and midstream regions,with the frequency of diffusion generally decreasing over time.Conversely,the extent of external diffusion diminished with increasing distance,with central and western regions of the basin experiencing stronger external diffusion effects compared to the eastern region.Based on these findings,the carbon sequestration space within the Yangtze River Basin was classified into four zones:optimal carbon sequestration zone,suitable for optimization zone,function enhancement zone,and key maintenance zone.These zonal optimization strategies provide a scientific basis for enhancing ecological civilization construction in the Yangtze River Basin. 展开更多
关键词 Yangtze River Basin Carbon sequestration services Multi-scenario Diffusion effect
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CO2 Mineralized Full Solid Waste Cementitious Material for Coal Mine Goaf Filling and Carbon Sequestration Potential Assessment 认领 引用 被引量：2
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作者 Bo Wang Huaigang Cheng +4 位作者 Xiong Liu Zichen Di Huiping Song Dongke Zhang Fangqin Cheng 《Engineering》 SCIE EI CSCD 2025年第5期70-80,共11页
Coal is an essential component of global energy;however,the processes of coal mining and utilization produce significant amounts of coal mine goafs,accompanied by coal-based solid wastes and emitted CO2,resulting i... Coal is an essential component of global energy;however,the processes of coal mining and utilization produce significant amounts of coal mine goafs,accompanied by coal-based solid wastes and emitted CO2,resulting in severe ecological and environmental challenges.In response to this issue,this study pro-poses a novel approach for filling coal mine goafs using cementitious materials prepared by coal-based solid wastes mineralized with CO2(15%in concentration).The CO2 sequestration capacities of individual solid wastes are ranked as follows:carbide slag(CS)>red mud(RM)>fly ash(FA).The performance of filling material prepared from composite solid waste(FA-CS-RM)mineralized with CO2 meets the filling requirements of goaf.The filling material(F60C20R20)obtained by CO2 mineralization was 14.9 MPa in maximum compressive strength,increasing by 32.2%compared to the non-mineralized material.The prepared filling material exhibits excellent CO2 sequestration capacity(i.e.,14.4 kg·t−1 in maximum amount of CO2 sequestration).According to the analysis of carbon sequestration potential,in China,the annual production of FA,CS,and RM is approximately 899,30,and 107 Mt,respectively in the year of 2023.The utilization of FA,CS,and RM individually can achieve carbon emission reductions of 3.42,10.78,and 0.61 Mt,respectively.The composite solid waste(FA-CS-RM)mineralized with CO2 can achieve 1.23 Mt in carbon emissions reduction.Additionally,taking Yellow River Basin of China as a case study,the total volume of underground space in coal mine goafs from 2016 to 2030 is estimated at 8.16 Gm3,indicating that this technology can sequester 0.18 Gt of CO2.This approach offers a promising solution for large-scale flue gas CO2 sequestration,recycling coal-based solid wastes,and remediating coal mine goafs,contributing to green utilization of coal and the emission reduction of carbon. 展开更多
关键词 CO2mineralization Solid waste Coal mine goaf Filling material Carbon sequestration potential assessment
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Stimulation of tight basalt reservoirs using supercritical carbon dioxide: Implications for large-scale carbon sequestration 认领 引用 被引量：2
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作者 Xiufeng Zhang Fengshou Zhang +3 位作者 Xuehang Song Junjie Wei Shuyuan Liu Jiangmei Wang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第6期3577-3592,共16页
Although supercritical carbon dioxide(SC-CO2)fracturing shows tremendous potential for maximizing injection efficiency and enhancing storage volumes,few investigations have been reported on the SC-CO2 fracturing... Although supercritical carbon dioxide(SC-CO2)fracturing shows tremendous potential for maximizing injection efficiency and enhancing storage volumes,few investigations have been reported on the SC-CO2 fracturing characteristics of tight basalts and the reactions between fractured basalt and SC-CO2.In this study,hydraulic fracturing experiments were conducted on cylindrical basalt specimens using water and SC-CO2 as fracturing fluids.Geometric parameters were proposed to characterize the fracture morphologies based on the three-dimensional(3D)reconstructions of fracture networks.The rock slices with induced fractures after SC-CO2 fracturing were then processed for fluid(deionized water/SC-CO2)-basalt reaction tests.The experimental results demonstrate that SC-CO2 fracturing can induce complex and tortuous fractures with spatially dispersed morphologies.Other fracturing behaviors accompanying the acoustic emission(AE)signals and pump pressure changes show that the AE activity responds almost simultaneously to variation in the pump pressure.The fractured basalt blocks exposed to both SC-CO2 and water exhibit rough and uneven surfaces,along with decreased intensities in the element peaks,indicating that solubility trapping predominantly occurs during the early injection stage.The above findings provide a laboratory research basis for understanding the fracturing and sequestration issues related to effective CO2 utilization. 展开更多
关键词 Basalt Supercritical carbon dioxide(SC-CO2) Hydraulic fracturing Induced fracture Carbon sequestration
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Comparing carbon sequestration efficiency in chemically separated soil organic carbon fractions under long-term fertilization in three major Chinese croplands 认领 引用 被引量：1
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作者 Hu Xu Adnan Mustafa +5 位作者 Lu Zhang Shaomin Huang Hongjun Gao Mohammad Tahsin Karimi Nezhad Nan Sun Minggang Xu 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第7期2841-2856,共16页
The combined application of organic manure and chemical fertilizers is an effective way to enhance soil organic carbon(SOC)sequestration through its influences on organic carbon(OC)input and the stability of SOC fract... The combined application of organic manure and chemical fertilizers is an effective way to enhance soil organic carbon(SOC)sequestration through its influences on organic carbon(OC)input and the stability of SOC fractions.However,there is limited information on the carbon sequestration efficiency(CSE)of chemically separated SOC fractions and its response to OC input under long-term fertilization regimes,especially at different sites.This study used three long-term fertilization experiments in Gongzhuling,Zhengzhou and Qiyang spanning 20 years to compare the stocks and CSE in four different OC fractions(very labile OC,labile OC,less labile OC,and non-labile OC)and their relationships with annual OC input.Three treatments of no fertilization(CK),chemical nitrogen,phosphorous,and potassium fertilizers(NPK),and chemical NPK combined with manure(NPKM)were employed.The results showed that compared with CK,NPKM resulted in enhanced SOC stocks and sequestration rates as well as CSE levels of all fractions irrespective of experimental site.Specifically for the very labile and non-labile OC fractions,NPKM significantly increased the SOC stocks by 43 and 83%,77 and 86%,and 73 and 82%in Gongzhuling,Qiyang,and Zhengzhou relative to CK,respectively.However,the greatest changes in SOC stock relative to the initial value were associated with non-labile OC fractions in Gongzhuling,Zhengzhou,and Qiyang,which reached 6.65,7.16,and 7.35 Mg ha-1 under NPKM.Similarly,the highest CSE was noted for non-labile OC fractions under NPKM followed sequentially by the very labile OC,labile OC,and less-labile OC fractions,however a CSE of 8.56%in the non-labile OC fraction for Gongzhuling was higher than the values of 6.10 and 4.61%in Zhengzhou and Qiyang,respectively.In addition,the CSE for the passive pool(very labile+labile OC fractions)was higher than the active pool(less-labile+non-labile OC fractions),with the highest value in Gongzhuling.The redundancy analysis revealed that the CSEs of fractions and pools were negatively influenced by annual OC input,mean annual precipitation and temperature,but positively influenced by the initial SOC and total nitrogen contents.This suggests that differential stability of sequestered OC is further governed by indigenous site characteristics and variable amounts of annual OC input. 展开更多
关键词 long-term field experiment fertilization carbon sequestration efficiency organic carbon stability organic carbon fractionation
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Global urbanization indirectly‘enhances’the carbon sequestration capacity of urban vegetation 认领 引用 被引量：1
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作者 Jieming Kang Baolei Zhang +6 位作者 Qian Zhang Chunlin Li Jun Ma Jiabo Yin Kailiang Yu Yuanman Hu Elie Bou-Zeid 《Geography and Sustainability》 CSCD 2025年第3期240-250,共11页
Urbanization radically alters the climatic environment and landscape patterns of urban areas,but its impact on the carbon sequestration capacity of vegetation remains uncertain.Given the limitations of current small-s... Urbanization radically alters the climatic environment and landscape patterns of urban areas,but its impact on the carbon sequestration capacity of vegetation remains uncertain.Given the limitations of current small-scale ground-based in situ experiments,the response of vegetation carbon sequestration capacity to urbanization and the factors influencing it remain unclear at the global scale.Using multisource remote sensing data,we quanti-fied and differentiated the direct and indirect impacts of urbanization on the carbon sequestration capacity of vegetation in 508 large urban areas globally from 2000 to 2020.The results revealed that the direct impacts of urbanization were generally negative.However,446 cities experienced an indirect enhancement in vegetation carbon sequestration capacity during urbanization,averaging 19.6%globally and offsetting 14.7%of the di-rect loss due to urbanization.These positive indirect effects were most pronounced in environments with limited hydrothermal conditions and increased most in densely populated temperate and cold regions.Furthermore,indi-rect impacts were closely related to urbanization intensity,human footprint,and level of urban development.Our study enhances the understanding of how the carbon sequestration capacity of vegetation dynamically responds to changes in the urban environment,which is crucial for improving future urban vegetation management and building sustainable cities. 展开更多
关键词 Global urbanization Vegetation carbon sequestration capacity Net ecosystem productivity Global change
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Afforestation species and slope as key drivers of soil carbon sequestration in plantations of the tropical‑subtropical transition zone:a case study from Xishuangbanna,Southwest China 认领 引用 被引量：1
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作者 Shiqiang Wang Wei Han Sangui Yi 《Journal of Forestry Research》 SCIE EI CAS CSCD 2025年第6期31-44,共14页
Tree plantations in the tropical-subtropical transition zone(TSTZ)represent crucial ecological regions where diverse biomes converge.Investigating the carbon sequestration potential and dynamic changes within these pl... Tree plantations in the tropical-subtropical transition zone(TSTZ)represent crucial ecological regions where diverse biomes converge.Investigating the carbon sequestration potential and dynamic changes within these plantation ecosystems is of considerable ecological significance.However,the spatial distribution,driving factors,and underlying mechanisms of carbon sequestration in plantations in this region are poorly understood,thereby limiting accurate assessments of their carbon sequestration potential.This study examines four types of plantation forests located within the TSTZ on the Puwen forest farm of Xishuangbanna,China.Two slope gradients were established to quantify and compare the rate of carbon sequestration across these ecosystems.Using random forest modeling and structural equation modeling,the study identifies key environmental factors influencing the rate of carbon sequestration in the plantations.The results reveal substantial variation in DBH growth rates,biomass carbon sequestration,and soil organic carbon sequestration rates(RSOC)among the four forest types.Critical factors affecting RSOCinclude leaf nitrogen and phosphorus concentrations(LP),total soil nitrogen(STN),total soil phosphorus(STP),soil available phosphorus,and nitrogen concentration in ground surface litter.Among these,STN and STP exerted positive effects on RSOC,while LP is exerted negative.Overall,the concentration of soil carbon,nitrogen and phosphorus,along with the nitrogen and phosphorus levels in leaves,under different species and topographic slopes,play decisive roles in regulating soil carbon sequestration rates in tropical and subtropical plantations.This research provides support for vegetation protection and restoration in ecologically sensitive areas and watersheds,contributing to the enhancement of regional forest carbon sequestration capacity. 展开更多
关键词 Afforestation Impact factor Slope Soil organic carbon sequestration Tree species Tropicalsubtropical transition zone
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