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Regulation of cadmium accumulation and transport in plants by exogenous calcium in acid yellow soils 认领 引用
1
作者 Shaoxia LIN Qiuxiao YAN +2 位作者 Fuxiao WEI Guangyan LIANG Daoping WANG 《Pedosphere》 SCIE CAS CSCD 2026年第3期749-758,共10页
Cadmium(Cd)is a highly toxic and mobile heavy metal of environmental concern,while calcium(Ca)is essential for plant cell metabolism and signal transduction.This study aimed to explore the effect of exogenous Ca appli... Cadmium(Cd)is a highly toxic and mobile heavy metal of environmental concern,while calcium(Ca)is essential for plant cell metabolism and signal transduction.This study aimed to explore the effect of exogenous Ca application on Cd enrichment and transport in a Cd-enriched crop,pepper(Capsicum annuum L.),grown on a high-Cd acidic soil in a karst region.The biological concentration factors were all greater than 1 in plant roots,stems,and leaves at different growth stages.The Cd sequestered by roots accounted for 56%-73%of the total Cd accumulation in the whole plant,while the fruits showed Cd accumulation of only 1%-5%of the total.As the plant grew,the Cd accumulation in the aboveground parts decreased in the high Ca/Cd treatments(6 mg kg−1Cd with 1.6 or 3.2 g kg−1Ca).Plant accumulation of Cd at the harvesting stage exhibited a significantly inverse correlation with the level of Ca added exogenously to soil.The results of this study elucidate the effect of elevated soil Ca levels on Cd accumulation in plants in karst regions and provide valuable insights into the remediation of Cd contamination in acid yellow soils with a geologically high background Cd level. 展开更多
关键词 biological concentration factor biological transfer factor Capsicum Cd enrichment heavy metal pepper soil Ca/Cd ratio
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Unveiling in-depth optical feedback-modulated interference dynamics driven by extracavity synergistic multi-factor coupling 认领 引用
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作者 Jie Liu Yunkun Zhao +7 位作者 Weihe Kong Jianchu Liu Shujun Zheng Haosen Li Shuang Song Daoping Wang Yuren Wang Liang Lu 《Advanced Photonics Nexus》 CSCD 2026年第4期101-111,共11页
The precise acquisition of multi-feature and multi-pose fusion information is crucial for revealing intrinsic physical interactions of laser dynamics,providing reliable intelligent decision-making in complex environme... The precise acquisition of multi-feature and multi-pose fusion information is crucial for revealing intrinsic physical interactions of laser dynamics,providing reliable intelligent decision-making in complex environments.We investigate the optical feedback-modulated interference dynamics in view of the developed laser self-mixing-based multi-parameter sensing system.It demodulates the combined extracavity moving information that is sensitive to translation and rotation with directional identification,leveraging the selfmixing speckle modulation effect and Doppler shift effect,describing the complete target’s attitude transformations.Experimentally,the optical feedback frequency-shifted technique suppresses the low-frequency noise interferences and provides a reference for rotation direction discrimination.We observe the evolution of photon behaviors under various feedback states,with the mean minimum feedback photon number of 0.691 feedback photons per Doppler cycle of 2.02μs.Experimental results demonstrate that the proposed sensor enables simultaneous vector measurements of in-plane translational linear velocity and out-of-plane rotational angle for a non-cooperative target.High signal-to-noise ratio dual-frequency domain signals with unambiguous directional recognition were acquired over a velocity and an angle range of 448.2 to 1232.6 mm∕s and 40 to 85 deg,respectively.We present a robust,common-path solution for multi-parameter fusion information detection from external moving targets,showing potential applications in autonomous navigation systems,industrial metrology,and dynamic target tracking scenarios. 展开更多
关键词 extracavity multi-factor coupling optical feedback-modulated interference dynamics vector measurement
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考虑不同竞争模式的共享出行平台价格与服务决策研究 认领 引用 被引量：1
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作者 宋亚楠 李梦瑶 +2 位作者 谷炜 王道平 南瑞娟 《中国管理科学》 CSSCI CSCD 北大核心 2025年第4期154-164,共11页
价格和服务水平是共享出行平台日常运营中的主要决策问题。基于共享出行平台竞争发展的不同阶段,本文构建了两平台在不同竞争模式下的价格与服务水平决策模型,求解了不同模型的均衡结果,对比分析了不同模型博弈均衡下的决策与收益,为两... 价格和服务水平是共享出行平台日常运营中的主要决策问题。基于共享出行平台竞争发展的不同阶段,本文构建了两平台在不同竞争模式下的价格与服务水平决策模型,求解了不同模型的均衡结果,对比分析了不同模型博弈均衡下的决策与收益,为两平台在不同竞争发展阶段的价格与服务决策提供理论支持,并通过实例分析对相关结论进行了验证。研究表明:引入服务竞争,有利于共享出行平台服务水平的提高;两平台差异较大时,服务竞争模式下,高佣金率平台展现出服务竞争优势,收益随竞争程度增强而增加;当服务成本系数较小时,低佣金率平台以低价格优势抢占市场是占优策略;当平台间采取服务竞争模式,平台的服务水平变化引起的共享服务系统收益变化程度高于平台收益变化程度。研究结论为共享出行平台不同时期不同竞争模式下的价格与服务水平决策提供了理论依据。 展开更多
关键词 共享出行 价格 服务 竞争模式
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A macrocycle-based“Russian doll”:The smallest cucurbit[4]uril in cucurbit[10]uril 认领 引用
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作者 Yu Xia Yangming Jiang +2 位作者 Xin-Long Ni Qiaochun Wang Daoping Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第12期169-173,共5页
Host-guest recognition-based macrocycle in macrocycle to form"Russian doll"assemblies remains an interesting topic in supramolecular chemistry.Herein,a macrocycle-in-macrocycle assembly was studied using cuc... Host-guest recognition-based macrocycle in macrocycle to form"Russian doll"assemblies remains an interesting topic in supramolecular chemistry.Herein,a macrocycle-in-macrocycle assembly was studied using cucurbit[10]uril(Q[10])and the smallest cucurbituril-like macrocycle(TD[4]).X-ray crystal structure analysis revealed that TD[4]was encapsulated in the cavity of Q[10]to form a 1:1 complex.Importantly,competitive guest studies suggested that TD[4]had the highest binding constant with the Q[10]host among the guests used,including Q[5],Me8TD[4],and amantadine molecules in water.Our results provided a new cucurbituril-based Russian-doll structure containing both the largest and smallest cavities of the cucurbiturils,which expanded the family of molecular Russian dolls. 展开更多
关键词 uril uril Host-guest recognition X-ray structure Macrocycle in macrocycle
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城市洪水灾害跨域级联经济效应及其适应策略 认领 引用
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作者 房德琳 徐菲 +4 位作者 李璟雯 安怡然 高培超 王道平 李灿松 《科学通报》 EI CAS CSCD 北大核心 2026年第14期3052-3056,共5页
受气候变化影响,洪水风险造成的损失不仅更频繁、更强烈,也更具“系统性”[1,2].提到洪水灾害,我们最先想到的是受灾城市内被淹没的房屋、停摆的车间、受损的道路与电力基础设施、受伤的人群等——这些都是洪水风险伴生的直接损失,发生... 受气候变化影响,洪水风险造成的损失不仅更频繁、更强烈,也更具“系统性”[1,2].提到洪水灾害,我们最先想到的是受灾城市内被淹没的房屋、停摆的车间、受损的道路与电力基础设施、受伤的人群等——这些都是洪水风险伴生的直接损失,发生在洪水真实淹没的地区.随着城市化与工业化的推进,现代城市并非孤岛,供应链网络间各个城市产业进行串并联:城市之间通过原材料供给、零部件配套、物流运输与服务贸易紧密相连,使得局部灾害冲击可能沿供应链“外溢”,在更大尺度上触发经济级联效应[3].此外,基础设施薄弱、适应能力有限的相对落后地区往往承受更大代价[4].因此,在城市尺度识别并量化洪水的直接影响及供应链驱动的级联经济影响,对于提升城市韧性、保障供应链安全、优化防灾减灾、应急恢复与适应策略具有重大意义. 展开更多
关键词 气候变化 经济效应 跨域级联 适应策略
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Water consumption and biodiversity:Responses to global emergency events 认领 引用 被引量：1
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作者 Dandan Zhao Junguo Liu +15 位作者 Laixiang Sun Klaus Hubacek Stephan Pfister Kuishuang Feng Heran Zheng Xu Peng Daoping Wang Hong Yang Lei Shen Fei Lun Xu Zhao Bin Chen Marko Keskinen Shaohui Zhang Jialiang Cai Olli Varis 《Science Bulletin》 SCIE EI CAS CSCD 2024年第16期2632-2646,共15页
Given that it was a once-in-a-century emergency event,the confinement measures related to the coronavirus disease 2019(COVID-19)pandemic caused diverse disruptions and changes in life and work patterns.These changes s... Given that it was a once-in-a-century emergency event,the confinement measures related to the coronavirus disease 2019(COVID-19)pandemic caused diverse disruptions and changes in life and work patterns.These changes significantly affected water consumption both during and after the pandemic,with direct and indirect consequences on biodiversity.However,there has been a lack of holistic evaluation of these responses.Here,we propose a novel framework to study the impacts of this unique global emergency event by embedding an environmentally extended supply-constrained global multi-regional input-output model(MRIO)into the drivers-pressure-state-impact-response(DPSIR)framework.This framework allowed us to develop scenarios related to COVID-19 confinement measures to quantify country-sector-specific changes in freshwater consumption and the associated changes in biodiversity for the period of 2020-2025.The results suggest progressively diminishing impacts due to the implementation of COVID-19 vaccines and the socio-economic system’s self-adjustment to the new normal.In 2020,the confinement measures were estimated to decrease global water consumption by about 5.7% on average across all scenarios when compared with the baseline level with no confinement measures.Further,such a decrease is estimated to lead to a reduction of around 5% in the related pressure on biodiversity.Given the interdependencies and interactions across global supply chains,even those countries and sectors that were not directly affected by the COVID-19 shocks experienced significant impacts:Our results indicate that the supply chain propagations contributed to 79% of the total estimated decrease in water consumption and 84%of the reduction in biodiversity loss on average.Our study demonstrates that the MRIO-enhanced DSPIR framework can help quantify resource pressures and the resultant environmental impacts across supply chains when facing a global emergency event.Further,we recommend the development of more locally based water conservation measures—to mitigate the effects of trade disruptions—and the explicit inclusion of water resources in post-pandemic recovery schemes.In addition,innovations that help conserve natural resources are essential for maintaining environmental gains in the post-pandemic world. 展开更多
关键词 Global emergency events Water-biodiversity causal effect COVID-19 Biodiversity MRIO-enhanced DPSIR framework Supply-chain network High-resolution water consumption dataset Supply-constrained multi-regional input-output(mixed MRIO)model
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The fungi of Dictyophora genus and its by-products:Recent progress towards the development of novel food formulations 认领 引用 被引量：1
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作者 Ningxian Yang Daoping Wang +4 位作者 Xin Li Hongying Li Shuang Luo Kaiju Zhang Peng Luo 《Food Bioscience》 SCIE 2024年第4期187-197,共11页
The food industry is constantly seeking bioactive molecules from natural sources,using recyclable and sustainable strategies for effective use and for preventive and therapeutic purposes.The Dictyophora genus,consider... The food industry is constantly seeking bioactive molecules from natural sources,using recyclable and sustainable strategies for effective use and for preventive and therapeutic purposes.The Dictyophora genus,considered to be a well-known homology plant of food or medicine,has considerable great health benefits and market utilization value.Guizhou Dictyophora genus,has recently attract the interest of experts owing to its vast health benefits.The production and processing of Dictyophora genus produces a large number of by-products(pileus,volva and stipe)with limited commercial development and negative environmental impacts.This review summarizes recent advances in the Dictyophora genus by-products as valuable sources of bioactive molecules for functional food development.Particular attention was given to the approaches used for Dictyophora genus polysaccharides extraction,purification,and structural characterization,chemical components,relevant biological properties in Dictyophora genus.These by-products are vital resources with diverse bioactivity and high value-added ingredients,which are widely used as functional emulsifiers and additives in the food industry.Due to these health-promoting potentials,the efficient use of these high value-added ingredients in the development of novel food formulations should be further stimulated.Furthermore,we highlight areas where further research is still required. 展开更多
关键词 Dictyophora genus Structural characterization Biological properties Applications Health benefits
Fintech, Macroprudential Supervision and Systematic Risk in China’s Banks 认领 引用
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作者 Daoping Wang Yangjingzhuo Liu +1 位作者 Yuxuan Xu Linlin Liu 《China Finance and Economic Review》 2022年第4期110-129,共20页
In recent years,the rapid development of fi ntech has brought far-reaching changes to the fi nancial sector.At the same time,fi ntech may cause potential systemic risk in the fi nancial sector,which has aroused specia... In recent years,the rapid development of fi ntech has brought far-reaching changes to the fi nancial sector.At the same time,fi ntech may cause potential systemic risk in the fi nancial sector,which has aroused special concerns from fi nancial regulatory authorities.Based on the micro data of China’s listed banks from 2013 to 2020,this paper analyzes the impact of fi ntech development on systemic risk in China’s banking industry and its mechanism.It reveals that for a micro bank,fintech progress increases its risk-taking and enhances inter-bank linkages,which results in signifi cantly amplifi ed systemic risk,and the impact is time-lagged and persistent.In addition,the heterogeneity analysis shows that the impacts of fi ntech on state-owned banks and other banks are heterogeneous and the margining risk of state-owned banks is lower when the fi ntech improves.It is also found that enhancing macroprudential supervision can reduce the systemic risk spillover of fintech.Robustness analyses including GMM regression and the method of instrumental variables prove that the conclusion is robust.This paper is of theoretical and policy signifi cance for the prevention of systemic risk in the banking industry as China develops fi ntech. 展开更多
关键词 fi ntech macroprudential supervision systemic risk
高排放城市在中国公平低碳转型中的杠杆效应 认领 引用 被引量：2
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作者 郑赫然 张增恺 +13 位作者 Erik Dietzenbacher 周雅 Johannes Tobben 冯奎双 Daniel Moran 蒋萌 单钰理 王道平 刘晓宇 李莉 赵丹丹 孟靖 区家敏 关大博 《Science Bulletin》 SCIE EI CAS CSCD 2023年第20期2456-2466,M0006,共11页
中国城市在全球碳减排中扮演着核心角色,然而中国城市间巨大的经济发展差异深刻影响了中国城市减排的进程.城际供应链连接了城市的生产和消费,被认为是塑造地区分化和减排疲软的因素之一,但该效应在先前的研究中往往没有得到充分的考虑... 中国城市在全球碳减排中扮演着核心角色,然而中国城市间巨大的经济发展差异深刻影响了中国城市减排的进程.城际供应链连接了城市的生产和消费,被认为是塑造地区分化和减排疲软的因素之一,但该效应在先前的研究中往往没有得到充分的考虑.本文对2012年中国309个城市的供应链进行建模.利用该模型,我们揭示了城市间存在显著的碳不平等:中国最富裕的10个城市的人均碳足迹相当于美国的水平,而中国一半的城市则低于全球平均水平.然而,这种显著的碳不平等也蕴含着新的减排机遇,即对32个超高排放城市,根据其富裕程度、产业结构和供应链的位置采取不同的减排策略,将可创造高达1.4亿吨的碳配额,距离碳达峰值增加了30%的空间.额外的碳配额足够使经济发展欠发达人口的平均生活水平达到中上收入水平,突出了城市层面的合作机制具有促进公平和减排目标收敛的巨大潜力. 展开更多
关键词 经济发展差异 供应链 产业结构 收入水平 碳配额 杠杆效应 减排策略 碳减排
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