期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到79篇文章
< 1 2 … 4 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Response of vegetation to climate change along the elevation gradient in High Mountain Asia 认领 引用
1
作者 HE Bing LI Ying +9 位作者 GAO Fan XU Hailiang WU Bin YANG Pengnian BAN Jingya LIU Zeyi LIU Kun HAN Fanghong MA Zhenghu WANG Lu 《Journal of Arid Land》 SCIE CSCD 2025年第9期1215-1233,共19页
Climate change in High Mountain Asia(HMA)is characterized by elevation dependence,which results in vertical zoning of vegetation distribution.However,few studies have been conducted on the distribution patterns of veg... Climate change in High Mountain Asia(HMA)is characterized by elevation dependence,which results in vertical zoning of vegetation distribution.However,few studies have been conducted on the distribution patterns of vegetation,the response of vegetation to climate change,and the key climatic control factors of vegetation along the elevation gradient in this region.In this study,based on the Normalized Difference Vegetation index(NDVI),we investigated the evolution pattern of vegetation in HMA during 2001-2020 using linear trend and Bayesian Estimator of Abrupt change,Seasonality,and Trend(BEAST)methods.Pearson correlation analysis and partial correlation analysis were used to explore the response relationship between vegetation and climatic factors along the elevation gradient.Path analysis was employed to quantitatively reveal the dominant climatic factors affecting vegetation distribution along the elevation gradient.The results showed that NDVI in HMA increased at a rate of 0.011/10a from 2001 to 2020,and the rate of increase abruptly slowed down after 2017.NDVI showed a fluctuating increase at elevation zones 1-2(<2500 m)and then decreased at elevation zones 3-9(2500-6000 m)with the increase of elevation.NDVI was most sensitive to precipitation and temperature at a 1-month lag.With the increase of elevation,the positive response relationship of NDVI with precipitation gradually weakened,while that of NDVI with temperature was the opposite.The total effect coefficient of precipitation(0.95)on vegetation was larger than that of temperature(0.87),indicating that precipitation is the dominant control factor affecting vegetation growth.Spacially,vegetation growth is jointly influenced by precipitation and temperature,but the influence of precipitation on vegetation growth is dominant at each elevation zone.The results of this study contribute to understanding how the elevation gradient effect influences the response of vegetation to climate change in alpine ecosystems. 展开更多
关键词 vegetation growth climate change elevation gradient Normalized Difference Vegetation index(NDVI) path analysis High Mountain Asia
暂未订购 下载PDF
Slope mediates drought sensitivity but does not affect drought recovery for young trees along elevation gradients in temperate planted larch forests 认领 引用
2
作者 Jinglei Liao Xianliang Zhang +7 位作者 Tim Rademacher Chen Xu Mingchao Du Fangqin Guo Weixin Li Jianwei Zheng Yuewei Wu Rubén D.Manzanedo 《Forest Ecosystems》 SCIE CAS CSCD 2025年第6期1137-1148,共12页
Climate warming causes mountainous species to shift their distributions towards higher elevations.How elevation influences growth-climate relationship in mountain regions has been intensively investigated.However,how ... Climate warming causes mountainous species to shift their distributions towards higher elevations.How elevation influences growth-climate relationship in mountain regions has been intensively investigated.However,how microtopography shapes tree growth and its drought resistance along the elevation gradient remains poorly understood.We used a network of Larix principis-rupprechtii tree-ring data comprising 1,918 trees from different age classes and mountain slopes,along an elevation gradient ranging from 970 to 1,869 m,to investigate how slope gradients mediate the growth and drought resilience of larch trees along an elevation gradient in North China.Growing season drought and temperature were the major limiting climatic factors for larch trees across the study region.Larch trees younger than 40 years exhibited a stronger positive correlation between basal area increment(BAI)and elevation on steep slopes(10°-35°)than on flat(0°-5°)or gentle(5°-10°)slopes.At low-elevation steep slopes,the growth of larch trees younger than 40 years showed a stronger correlation with the Palmer drought severity index(PDSI).Both resistance and resilience were found to increase along the elevation gradient on steep slopes for young larch trees but not for old larch trees.No significant differences were observed in the drought recovery ability of larch trees across all age groups at increasing elevation.Our results highlight that drought events may particularly affect the growth of young larch trees on low-elevation steep slopes,with potential repercussions on mortality rates. 展开更多
关键词 Climate change Larch Elevation gradient Drought Radial growth
暂未订购 下载PDF
Elevation gradient distribution of indices of tree population in a montane forest:The role of leaf traits and the environment 认领 引用 被引量：12
3
作者 Zuhua Wang Rong Zheng +3 位作者 Lilin Yang Tinghong Tan Haibo Li Min Liu 《Forest Ecosystems》 SCIE CSCD 2022年第1期124-130,共7页
Background:To disentangle the controls on species distribution in the context of climate change is a central element in proposed strategies to maintain species diversity.However,previous studies have focused mainly on... Background:To disentangle the controls on species distribution in the context of climate change is a central element in proposed strategies to maintain species diversity.However,previous studies have focused mainly on the roles of abiotic factors(e.g.,climate and soil properties),with much less attention given to the roles of biotic factors such as functional traits.Here,we measured eight leaf traits for 240 individual trees of 53 species and analyzed the variation in traits and population composition indices and their relationships with soil properties,climate factors,and leaf traits.Results:The tree density,frequency and species importance values of the overall species and saplings significantly increased with increasing elevation,while the same indices(except for species frequency)of adults did not significantly change.The largest percentage of variation of species importance value(greater than 50%)was explained by climate,but leaf traits played a critical role in driving elevation distribution patterns of both saplings and adults;the abundance of saplings significantly increased with elevation,with increased leaf carbon contents,while the abundance of adults did not change in accordance with a nutrient conservation strategy associated with the leaf economic spectrum.Conclusions:Our results suggest that the elevation gradient distribution of woody plant species is dependent on tree size and that local atmospheric humidity and leaf traits cause considerable variation in species distribution along subtropical mountain elevations.We provide evidence of which leaf traits play a key role in the elevation gradient distribution of different sizes of woody tree species. 展开更多
关键词 Elevation gradient Species distribution Leaf traits Climate change Leaf economic spectrum Mt.Fanjingshan
暂未订购 下载PDF
Litter Decomposition of Emergent Plants along an Elevation Gradient in Wetlands of Yunnan Plateau,China 认领 引用 被引量：2
4
作者 LIU Guodong SUN Jinfang +3 位作者 TIAN Kun YUAN Xingzhong AN Subang WANG Hang 《Chinese Geographical Science》 SCIE CSCD 2017年第5期760-771,共12页
The decomposition of plant litter is a key process of litter decomposition to global climate warming in plateau in the flows of energy and nutrients in ecosystems. However, the response wetlands remains largely unknow... The decomposition of plant litter is a key process of litter decomposition to global climate warming in plateau in the flows of energy and nutrients in ecosystems. However, the response wetlands remains largely unknown. In this study, we conducted a one-year litter decomposition experiment along an elevation gradient from 1891 m to 3260 m on the Yurman Plateau of Southwest China, using different litter types to determine the influences of climate change, litter quality and microenvironment on the decomposition rate. The results showed that the average decomposition rate （K） increased from 0.608 to 1.152, and the temperature sensitivity of litter mass losses was approximately 4.98%/℃ along the declining elevation gradient. Based on a correlation analysis, N concentrations and C ： N ratios in the litter were the best predictors of the decomposition rate, with significantly positive and negative correlations, respectively. Additionally, the cumulative effects of decomposition were clearly observed in the mixtures of Scirpus tabernaemontani and Zizania caduciflora. Moreover, the litter decomposition rate in the water was higher than that in the sediment, especially in high-elevation areas where the microenvironment was significantly affected by temperature. These results suggest that future climate warming will have significant impacts on plateau wetlands, which have important fimctions in biogeochemical cycling in cold highland ecosystems. 展开更多
关键词 plateau wetland climate change elevation gradient litter decomposition carbon cycle Yunnan Plateau
暂未订购 下载PDF
Variation in soil organic matter accumulation and metabolic activity along an elevation gradient in the Santa Rosa Mountains of Southern California, USA 认领 引用 被引量：1
5
作者 Amitava CHATTERJEE George D JENERETTE 《Journal of Arid Land》 SCIE CSCD 2015年第6期814-819,共6页
Variations in soil organic matter accumulation across an elevation can be used to explain the control of substrate supply and variability on soil metabolic activity. We investigated geographic changes in soil organic ... Variations in soil organic matter accumulation across an elevation can be used to explain the control of substrate supply and variability on soil metabolic activity. We investigated geographic changes in soil organic matter and metabolic rates along an elevation gradient（289–2,489 m） in the Santa Rosa Mountains, California, USA from subalpine and montane pine forests through chaparral to desert. From base（289 m） to summit（2,489 m）, 24 sites were established for collecting soil samples under canopies and inter-canopy spaces, at 0–5 and 5–15 cm soil depths increments. Soil organic matter（SOM） content was determined using weight loss on ignition at 550°C and soil CO2 efflux（R） was measured at day 5（R5） and day 20（R20） of incubation. Changes in SOM content along the elevation gradient showed a significant relationship（P〈0.05） but R5 and R20 were not related to either elevation or SOM content. However, the ratio of R and SOM（R5/SOM） showed a strong relationship across the mountains at both soil depths. R5/SOM, as an indicator of carbon use efficiency, may be applicable to other semi-arid transects at larger scale modeling of soil metabolic processes. 展开更多
关键词 elevation gradient soil organic matter CO2 efflux metabolic activity
暂未订购 下载PDF
Variations of population structure and important value of the main edificators along the elevation gradient on the northern slope of Changbai Mountain 认领 引用 被引量：1
6
作者 姜萍 叶吉 +1 位作者 郝占庆 邓红兵 《Journal of Forestry Research》 CAS 2003年第2期117-121,共5页
From 700 m to 1900 m on the northern slope of Changbai Mountain, 13 plots with an interval of 100 m in elevation were investigated to study the variations of population structure and important value of the main edific... From 700 m to 1900 m on the northern slope of Changbai Mountain, 13 plots with an interval of 100 m in elevation were investigated to study the variations of population structure and important value of the main edificators along the elevation gradient. In their core distribution areas, most of the edificators had healthy population structure and could regenerate smoothly except Larix olgensis, but important value of Larix olgensis had no obvious variations with elevation changes, which showed that Larix olgensis had its own particularity and strong adaptability. At high elevation above 1800 m, Betula ermanii was the only species that could form a mono-dominant community. Important values of Pinus koraiensis and Acer mono had similar changing trends, and they had the similar ecological adaptabilities. 展开更多
关键词 Edificator Population Important value Structure Elevation gradient Changbai Mountain
暂未订购 下载PDF
Species,growth form,and biogeographic diversity of summit vegetation along an elevation gradient in the tropical Andes:a baseline for climate change monitoring 认领 引用
7
作者 Luis D.LLAMBI Luis E.GAMEZ +6 位作者 Roxibell PELAYO Carmen J.AZOCAR Jesus E.TORRES Nelson J.MARQUEZ Monica B.BERDUGO Francisco CUESTA Lirey A.RAMIREZ 《Journal of Mountain Science》 SCIE CSCD 2022年第12期3441-3457,共17页
Tropical alpine ecosystems exhibit outstanding plant diversity and endemism while being particularly sensitive to the impacts of climate change.Although understanding spatiotemporal changes in plant species compositio... Tropical alpine ecosystems exhibit outstanding plant diversity and endemism while being particularly sensitive to the impacts of climate change.Although understanding spatiotemporal changes in plant species composition,richness and community structure along tropical alpine altitudinal gradients is of primary importance,both the functional and historical/biogeographic dimensions of vegetation diversity remain largely unexplored.We used Generalized Linear Models and multivariate analyses to assess changes in species,growth forms,and biogeographic groups richness and abundance,in response to habitat variables along an elevation gradient in seven summits(3800 to 4600 m asl)in the Venezuelan Andes,studied using the standardized approach of the GLORIA-Andes monitoring network.The habitat variables assessed were soil temperature(-10 cm),soil organic matter,slope inclination,and substrate cover.We found 113 species,representing72 genera,32 families,13 growth forms,and seven biogeographic origins,that included 25%of endemic elements.We observed richer vegetation,both in terms of species and growth forms,in summits with higher soil temperatures and higher SOM content,as well as higher biogeographic origin richness with increasing soil temperatures.The presence of holarctic elements increased toward higher elevations,while the occurrence of austral antarctic elements increased toward lower elevations.Our results indicate that biogeographic and functional approaches to vegetation diversity capture well the effect of abiotic filtering on community structuring in these tropical alpine environments.These findings constitute an important baseline for monitoring vegetation dynamics linked to climate change in the Venezuelan Andes by highlighting the functional and historical perspective on vegetation analyses,in contrast with more traditional approaches,based only on taxonomic species diversity. 展开更多
关键词 Alpine vegetation Biogeography Elevation gradient Functional diversity Páramo Soil organic matter Temperature Tropical Andes
暂未订购 下载PDF
Diversity of macrofungi along elevation gradients in Mt.Arayat Protected Landscape,Arayat,Pampanga,The Philippines 认领 引用
8
作者 Reynante G.Bustillos Rich Milton R.Dulay +1 位作者 Sofronio P.Kalaw Renato G.Reyes 《Studies in Fungi》 2024年第1期32-46,共15页
The present study was carried out to document the diversity and distribution of macrofungi in Mt.Arayat Protected Landscape(MAPL),(Pampanga,The Philippines).Purposive sampling was conducted monthly from July to Decemb... The present study was carried out to document the diversity and distribution of macrofungi in Mt.Arayat Protected Landscape(MAPL),(Pampanga,The Philippines).Purposive sampling was conducted monthly from July to December of 2023 from the baseline(100−750 masl)in South Peak and North Peak collection sites.A total of 224 macrofungi which belong to two phyla,four classes,12 orders,36 families,53 genera,and 108 species were documented.Out of 108 species,70 were identified at the species level.Most of the documented taxa belong to the phylum Basidiomycota,wherein class Agaricales recorded the highest number of species,followed by Polyporales.The South Peak recorded a higher percentage macrofungal composition of 70.37%than the North Peak with 52.78%.The distribution of macrofungi in the two collection sites was statistically analyzed based on Shannon diversity index(H)Margalef index(R)and evenness(E)revealed higher in the South Peak with 4.16(H)and 15.49(R),respectively.Evenness was almost uniform in both collection sites.Sorensen similarity index of 0.366 indicated a moderate level of shared species between the two collection sites.Regarding elevation,the highest number of macrofungal composition was found at 100−250 masl(56.48%),comprised mainly of grass and trees.The lowest number of macrofungal composition was found at 501−750 masl(25.93%),dominated mostly by canopies.The distribution of macrofungi was also higher in 100−250 masl,(H)=4.066 and(R)=13.8.The three elevations obtained almost an even distribution.Similarity of shared species was moderately high between 100−250 masl vs 251−500 masl and relatively low between 100−250 masl vs 750 masl.Most macrofungi were found as non-edible and growing solitarily on dead logs and twigs trunks of trees,bamboo,and rotten stumps.Climatic factors such as temperature,humidity,and rainfall,and human-made disturbances affected macrofungal abundance and distribution.The composition was high during the rainy month of July(51.85%)and low in the drier month of December(15.74%).Species of Ganoderma,Microporus,Schizophyllum,and Trametes were commonly found in both collection sites,during the collection months,and at three different elevations(100−250 masl,251−500 masl,and 501−750 masl).Twenty-two macrofungi were identified and considered as newly recorded species in the Philippines and eight species were successfully tissue-cultured in the laboratory.This high diversity of species observed in MAPL was intricately linked to the functioning of its forest ecosystem which could be a promising source of medicinal macrofungi.Thus,the conservation and sustainability of the forest is deemed necessary. 展开更多
关键词 elevation gradients biodiversity conservation macrofungal diversity ecological distribution Mt Arayat Protected Landscape macrofungi Philippines
暂未订购 下载PDF
Ecoenzymatic stoichiometry reveals increased phosphorus limitation of microbial metabolism in tropical forests along elevation gradients 认领 引用
9
作者 Luhui Kuang Zhijian Mou +8 位作者 Yuanwen Kuang Dexiang Chen Jun Wang Dafeng Hui Hans Lambers Josep Peñuelas Jordi Sardans Hai Ren Zhanfeng Liu 《Soil Ecology Letters》 CAS CSCD 2026年第3期177-190,共14页
Tropical forests exert the largest influence on the global carbon(C)cycle and climate,and soil microorganisms play an essential role in the feedbacks of the global C cycle and climate.However,the issue of how nutrient... Tropical forests exert the largest influence on the global carbon(C)cycle and climate,and soil microorganisms play an essential role in the feedbacks of the global C cycle and climate.However,the issue of how nutrient limitation of microbial metabolism affects the soil C cycle and its responses to climate change in tropical forests remains poorly understood.Here,we investigated the elevational patterns of microbial metabolic limitations in typical tropical forests by studying ecoenzymatic stoichiometry along three elevation gradients(with an overall elevation range of 100-1400 m above sea level(a.s.l.))in south China.Results showed that microbial metabolism in tropical forest soils was strongly limited by phosphorus(P)and increased with increasing elevation,suggesting that there was greater microbial P limitation where temperatures were lower.In contrast,microbial C limitation was relatively low and did not show a consistent elevational pattern.Temperature emerged as the most significant predictor of microbial metabolic limitations,showing a positive correlation with microbial C limitation but a negative correlation with microbial P limitation.Based on an investigation of three topical forest elevation gradients(<1500 m a.s.l.),our findings predict that global warming may alleviate microbial P limitation while exacerbate microbial C limitation. 展开更多
关键词 extracellular enzyme activity extracellular enzyme stoichiometry microbial metabolic limitations elevation gradients tropical forests
Distribution of plant species along the elevation gradient in Pangi, a high altitude and remote eco-region in Western Himalaya, India 认领 引用
10
作者 Anupam BHATT Amit CHAWLA 《Journal of Mountain Science》 SCIE CSCD 2024年第11期3739-3753,共15页
The Himalayan high-altitude eco-regions exhibit higher plant species diversity, and several environmental factors play a crucial role in shaping species distribution and diversity. The aim of the present study is to i... The Himalayan high-altitude eco-regions exhibit higher plant species diversity, and several environmental factors play a crucial role in shaping species distribution and diversity. The aim of the present study is to investigate the floristic composition, distribution of endemic, threatened and native taxa across the elevation zones and the effect of various environmental factors on species richness pattern along the elevation gradient in Pangi, a remote highaltitude region of Himalaya. We conducted extensive field surveys covering 31 localities and established elevational transects for assessing species distribution and the factors affecting thereof. Additionally, information on nativity, endemism, and IUCN red-list categories of threatened species were compiled from published and online resources. Data were analysed using regression model and Non-Metric MultiDimensional Scaling(NMDS). In the present study, we recorded a total of 771 plant species across the region. In regression model, the elevation and anthropogenic variables and their interaction showed significant negative effects on the species richness. Species richness was found to decrease with the increasing elevation, showing a humped shaped pattern, with maximum richness observed in the mid-elevations(2,400m to 3,300m above sea level). The pattern of distribution of native and non-native species along the elevation gradient showed opposite trends, and proportion of native species increased towards the higher elevations. Further, NMDS ordination suggests that zone-Ⅰ(2,100-2,500m asl) and zone-Ⅴ(4,001-4,500m asl) had highest differences in species composition, while zone-Ⅰ, zone-Ⅱ(2,501-3,000m asl), and zone-Ⅲ(3,001-3,500m asl) showed higher affinity with respect to their species composition. Thus, the present study revealed that remote and hitherto un-explored Pangi eco-region is rich in floristic diversity and provides pertinent information on the species distribution and composition, and various underlying factors influencing the richness patterns, which is necessary for framing suitable conservation strategies, management plans and futuristic population studies. 展开更多
关键词 Elevational gradient Floristic Himalaya IUCN Native Richness pattern
暂未订购 下载PDF
Biodiversity of Amphibians Along the Elevational Gradient of Mount Leigong: Checklist, Distribution, and Conservation 认领 引用
11
作者 Tuo SHEN Chaobo FENG +5 位作者 Xiujun TANG Caichun PENG Jing LIU Xue GOU Lang MU Haijun SU 《Asian Herpetological Research》 SCIE CAS CSCD 2026年第1期62-66,共5页
Dear Editor,Mountain systems have long been refuges for many species,often viewed as"islands"that promote speciation due to geographic isolation(Rahbek et al.,2019).Their high environmental heterogeneity fos... Dear Editor,Mountain systems have long been refuges for many species,often viewed as"islands"that promote speciation due to geographic isolation(Rahbek et al.,2019).Their high environmental heterogeneity fosters centers of endemism,and they harbor over 85%of global species diversity(Zhao et al.,2022).Consequently,mountains are key systems for exploring biodiversity patterns along elevational gradients,where species richness often follows four recognized models:monotonic decrease,unimodal pattern(forward and backward peak patterns),and low plateau followed by a decrease along the elevational gradient(McCain et al.,2010). 展开更多
关键词 species richness conservation biodiversity elevational gradient amphibians biodiversity patterns Mount Leigong checklist
暂未订购 下载PDF
Threshold-dependent plant-microbe interactions shape soil microbial life-history strategies and stability across an elevational gradient 认领 引用
12
作者 Quan Zhou Yunlong Cai +6 位作者 Yarui Chen Lianhao Zhou Man Hu Hui Zhang Quanfa Zhang Shengjun Wu Quanchao Zeng 《Forest Ecosystems》 SCIE CAS CSCD 2026年第3期729-739,共11页
Despite growing recognition of nonlinear plant-microbe relationships,the ecological thresholds at which plant multidimensional diversity triggers shifts in microbial life-history strategies and community stability rem... Despite growing recognition of nonlinear plant-microbe relationships,the ecological thresholds at which plant multidimensional diversity triggers shifts in microbial life-history strategies and community stability remain poorly understood.Along a subalpine elevational gradient,we integrated plant taxonomic,functional,and phylogenetic diversity(PD)with soil microbial sequencing and employed ensemble machine learning and generalized additive mixed models(GAMMs)to quantify nonlinear and threshold responses.Bacterial commu-nities were dominated by K-strategists(oligotrophs)and exhibited unimodal stability patterns across elevation,with both life-history strategies and community stability primarily regulated by plant functional or PD.In contrast,fungal communities displayed a gradual but incomplete shift toward K-strategists at higher elevations,while community stability increased with elevation.Fungal life-history strategies were predominantly structured by elevation-associated environmental filtering,whereas their stability was positively associated with plant functional diversity,indicating a partial decoupling between compositional strategies and temporal stability.Both microbial domains displayed pronounced nonlinear and threshold-dependent responses.Intermediate levels of plant functional attributes promoted bacterial K-strategist dominance and stability,whereas extreme trait values or nutrient enrichment reduced stability.Fungal responses were characterized by elevation-driven threshold transitions consistent with strong abiotic filtering.Variance partitioning further revealed asym-metric controls:Plant multidimensional diversity explained more variation in bacterial strategies and stability,whereas fungal strategies were more strongly constrained by abiotic factors.Together,these findings demon-strate that soil microbial assembly along environmental gradients is governed by domain-specific and threshold-driven mechanisms rather than continuous linear shifts,with important implications for predicting belowground ecosystem responses to global change. 展开更多
关键词 Plant biodiversity Plant functional traits Microbial life-history strategies Microbial community stability Elevational gradient
暂未订购 下载PDF
Increasing Elevation Reduces Complexity of Soil Microbial Co-occurring Network in Changbai Mountains,China 认领 引用
13
作者 LIU Xue WU Haitao +4 位作者 GUAN Qiang LU Kangle LIU Dandan KANG Yujuan ZHANG Shixiu 《Chinese Geographical Science》 SCIE CAS CSCD 2026年第2期306-319,I0004-I0006,共14页
Elevation patterns and assembly processes of soil microbial community structures are essential for understanding biogeo-chemical processes in mountain systems.Differences in soil properties caused by elevation gradien... Elevation patterns and assembly processes of soil microbial community structures are essential for understanding biogeo-chemical processes in mountain systems.Differences in soil properties caused by elevation gradients can regulate the spatial distribu-tion and network complexity of the community structure.To explore the variations in soil microbial community structures and their as-sembly mechanisms across different elevations of the Changbai Mountains,as well as their responses to environmental factors,we col-lected microbial samples along an elevational gradient(seven elevations containing four vegetation zones)on the western slope of the Changbai Mountains using the method of metagenomic sequencing.The results showed a significant difference(P<0.05)for the Chao1 index across different elevations,but no significant difference was observed for the Shannon and Simpson indices.With increasing elev-ation,the number of nodes and links in the microbial network gradually decreased.Acidobacteria were highly connected to many nodes.The microbial communities indicated a significant distance-decay relationship(P<0.001)and were affected more by stochastic pro-cesses along the elevation gradient.The results of the Structural Equation Model(SEM)showed that elevation had direct significant ef-fect on carbon(C,P<0.01),nitrogen(N,P<0.01),and phosphorus(P,P<0.05)and weak negative effect on their ecological stoi-chiometry.Elevation was one of the major variables contributing to microbial network topology.The contribution of C and N to micro-bial network complexity was higher than that of P.Our study provides valuable insights into the responses of soil microbial communit-ies to elevation variations. 展开更多
关键词 assembly processes co-occurring network elevation gradient microbial community soil nutrient Changbai Mountains,China
暂未订购 下载PDF
Elevational patterns of multidimensional plant diversity and community structure in a subtropical karst mountain system 认领 引用
14
作者 Lihua Zhou Yuxiao Long +7 位作者 Siwei Hu Min Luo Wenbo Mou Jingwen Deng Lisha Jing Mingyue Pang Li Huang Yongchuan Yang 《Plant Diversity》 SCIE CAS CSCD 2026年第2期351-362,共12页
Understanding the mechanisms driving species assembly along elevational gradients in mountains is crucial for biodiversity conservation.However,no consensus has yet been reached on how these mechanisms work.This knowl... Understanding the mechanisms driving species assembly along elevational gradients in mountains is crucial for biodiversity conservation.However,no consensus has yet been reached on how these mechanisms work.This knowledge gap is particularly pronounced in biodiversity-rich subtropical karst mountains.Integrating multidimensional biodiversity information into research in karst systems will provide new insights into community assembly.Thus,we explored multidimensional forest diversity along an elevational gradient at Jinfo mountain,a karst mountain site,assessing the relative importance of distinct ecological processes in shaping patterns of community diversity and structure.Our results show that different dimensional diversities exhibit similar elevational patterns,with higher diversity observed at low-to-mid elevations than at high elevations.The multidimensional diversity and structure were primarily controlled by climate stress and topographic filtering and were further modulated by soil nutrient limitation and interspecific competition.However,the explanatory weights of these ecological processes were inconsistent among the different dimensions of diversity.The phylogenetic structure was clustered at low and middle elevations,with over-dispersion at high elevations.This indicates that community assembly shifted from being dominated by environmental filtering to being dominated by competitive exclusion as elevation increased.In conclusion,our results demonstrate that combining multidimensional diversity and multiple ecological processes related to community assembly can enhance the understanding of diversity patterns along elevational gradients and the underlying mechanisms maintaining them in subtropical karst mountains. 展开更多
关键词 Multidimensional diversity Ecological process Community assembly Elevational gradient Karst mountains Evergreen broad-leaved forest
暂未订购 下载PDF
Elevational patterns of plant species and phylogenetic diversity in the eastern Pamir Plateau 认领 引用
15
作者 WEI Susu ZHANG Yuanyuan +6 位作者 TAO Ye ZHANG Yue DAI Ling Mekhrovar OKHONNIYOZOV MA Xuexi LI Yaoming ZHANG Yuanming 《Regional Sustainability》 CAS CSCD 2026年第2期38-58,共21页
Mountain ecosystems offer natural gradients for exploring biodiversity patterns;however,the elevational patterns of plant species and phylogenetic diversity in the eastern Pamir Plateau remain poorly understood.As a b... Mountain ecosystems offer natural gradients for exploring biodiversity patterns;however,the elevational patterns of plant species and phylogenetic diversity in the eastern Pamir Plateau remain poorly understood.As a biogeographical junction of the Central Asian mountain ranges,the eastern Pamir Plateau in China is geographically connected to the main part of the Pamir Plateau in Tajikistan,resulting in significant climatic and topographical heterogeneity and unique regional vegetation communities.In this study,we established 5 elevational transects and 91 plots (1500–4870 m) in the eastern Pamir Plateau to investigate the patterns and environmental drivers of plant diversity at both regional and local spatial scales.We examined diversity patterns and community composition using regression models and community structure analysis and quantified the relative importance of environmental factors using a random forest model.The results showed a distinct differentiation along elevation gradients,with overall plant diversity,herbaceous plant diversity,and phylogenetic diversity index increasing with elevation,whereas woody plant diversity declined.The phylogenetic structure indices (including net relatedness index and nearest taxon index) exhibited heterogeneous elevational responses,indicating that community assembly was jointly driven by environmental filtering and niche differentiation.Soil nutrients,water availability,and temperature were the primary environmental drivers,with soil factors predominantly influencing herbaceous plant diversity,while climatic variables dominated woody plant diversity.These findings demonstrate that plant diversity along elevational gradients of the eastern Pamir Plateau exhibits the characteristic patterns of a unique arid mountain ecosystem,where enhanced soil fertility and moderate moisture at higher elevations partly offset energy limitations,thereby maintaining plant diversity through functional convergence of closely related lineages.This pattern of biodiversity maintenance contrasts with the divergence-driven community assembly processes commonly observed in humid mountain systems.Overall,this study contributes to a better understanding of biodiversity maintenance in the eastern Pamir Plateau.Given its geographical continuity with the Pamir Plateau in Tajikistan,our findings can provide a basis for alpine conservation efforts across arid Central Asia. 展开更多
关键词 Species diversity Phylogenetic diversity Phylogenetic structure Elevational gradients Eastern Pamir Plateau
暂未订购 下载PDF
The elevation gradient of stable isotopes in precipitation in the eastern margin of Tibetan Plateau 认领 引用 被引量：3
16
作者 Jie LI Zhonghe PANG 《Science China Earth Sciences》 SCIE EI CAS CSCD 2022年第10期1972-1984,共13页
Tibetan Plateau(TP)receives moistures from different directions,so variations of isotope elevation gradient on different sides may exist.In this study,we systematically monitored and modeled the elevation effect of st... Tibetan Plateau(TP)receives moistures from different directions,so variations of isotope elevation gradient on different sides may exist.In this study,we systematically monitored and modeled the elevation effect of stable isotopes in precipitation of the eastern margin of the Tibetan Plateau,where we collected 265 water samples for stable isotope(δ2H andδ18O)analyses,of which 70 are eventful rainfall samples,and 195 are surface water samples,for comparison.Alpine lakes on the mountain peaks were used to reconstruct the average isotope composition of the local precipitation based on the evaporation effect.An elevation gradient of−4.2‰km−1(R2=0.93)was established for the eastern marginal region of TP.This elevation gradient was further confirmed by fractionation assessment using the Rayleigh fractionation model.This is the highest ever reported for the TP and it is the highest as compared to those of all the other slopes as well as that of the interior part of the TP.Precipitation isotopes in the interior of TP show a lower elevation gradient,which is likely caused by significant local moisture recycling.This paper also discusses the limitations of using river water samples to construct the elevation gradient. 展开更多
关键词 Elevation gradient Stable isotopes Rayleigh fractionation Moisture recycling Tibetan Plateau
暂未订购 下载PDF
Long-term forest damage due to an extreme weather event:An ice storm mediated by elevation causes tree breakage in sub-tropical China 认领 引用 被引量：1
17
作者 Hanyu Xiang Yimei Yan +8 位作者 Tian Tian Nan Wu Jie Wang Qian Qian Jinyu Guo Chris Newman Christina D.Buesching Hechun Chen Youbing Zhou 《Forest Ecosystems》 SCIE CAS CSCD 2025年第3期472-481,共10页
Extreme weather events pose an ever-greater threat to people,infrastructure,and nature.Forest ecosystems are highly sensitive to extreme cold events that can disrupt ecosystem functions,especially in montane regions.I... Extreme weather events pose an ever-greater threat to people,infrastructure,and nature.Forest ecosystems are highly sensitive to extreme cold events that can disrupt ecosystem functions,especially in montane regions.Ice storms can be particularly destructive,with rapid ice accretion causing tree branches to break,even snapping or uprooting entire trees.In March 2022,the Shennongjia forest in central China experienced severe ice storm conditions that severely damaged over 230,300ha.We utilized this opportunity to assess the vulnerability of different tree types(coniferous,deciduous,and evergreen broad-leaved)and stand compositions to damage resulting from ice glaze along an elevation gradient from 1,200 to 2,400m a.s.l.Among the 7,144 trees surveyed,10.1%suffered some extent of damage,which was most prolific in the middle elevation zone.While 96.8%of all damage occurred to deciduous broadleaved trees that dominated the forest community,the most severe damage(uprooting and lower trunk breakage)occurred to coniferous trees.The extent and severity of tree damage were moderated by forest composition,with secondary effects of forest structure and slope.Abiotic factors predominantly affected coniferous trees.We emphasize that more research and monitoring are needed to better understand the full impact of extreme weather events on forests,especially as the frequency and intensity of these events increases due to climate change. 展开更多
关键词 Ice storm damage Elevation gradient Tree breakage Abiotic and biotic factors Extreme climatic event
暂未订购 下载PDF
Variation of morphological and leaf stoichiometric traits of two endemic species along the elevation gradient of Mount Kenya, East Africa 认领 引用 被引量：3
18
作者 Antony N.Waigwa Brian Njoroge Mwangi +3 位作者 Gituru R.Wahiti Fred Omengo Yadong Zhou Qingfeng Wang 《Journal of Plant Ecology》 SCIE CSCD 2020年第6期785-792,共8页
Aims The aim of this paper is to assess morphological and leaf stoichiometric responses of Dendrosenecio keniensis and Lobelia gregoriana to extreme environmental conditions along an elevation gradient in tropical mou... Aims The aim of this paper is to assess morphological and leaf stoichiometric responses of Dendrosenecio keniensis and Lobelia gregoriana to extreme environmental conditions along an elevation gradient in tropical mountains.Methods In this study,we assessed the variation of the morphological traits,including plant height,leaf area,leaf thickness,leaf dry weight,specific leaf area and the leaf stoichiometry traits nitrogen,carbon and phosphorous of the two endemic species D.keniensis and L.gregoriana.We further explored the relations of these morphological traits to soil organic carbon,soil total nitrogen,soil phosphorous,annual mean temperature,annual mean precipitation,annual total solar radiation,water vapor pressure and the topographic variables aspect,slope and hill shade along the elevation gradient.Ninety 10 m×10 m sampling plots were set up along the elevation gradient ranging from 3500 to 4300 m.We used 1 km×1 km grid cells to rasterize our study area in ArcGIS 10.5 for easy access to data pertaining to the climate of each elevation band.We performed linear regression of the morphological and leaf stoichiometric traits with elevation as explanatory variable.We conducted correlation analysis on the morphological and leaf stoichiometric traits with climatic,soil and topographic variables along the elevation gradient.Important Findings Dendrosenecio keniensis had wool-like pubescent leaves while L.gregoriana had mucilage packed succulent and waxy cuticle leaves to avoid freezing.Both species exhibited reduced metabolic rates as shown by the low leaf phosphorous content.Our results also showed that changes in morphology and leaf stoichiometry were determined by a combination of climate,soil and topographic variables that change along elevation on Mount Kenya.The observed variations in the morphological and leaf stoichiometric traits of D.keniensis and L.gregoriana,which grow side by side along the elevation gradient,were interpreted as adaptation to the harsh environmental conditions. 展开更多
关键词 Africa elevation gradient functional traits adaptability climate change
Multidimensional amphibian diversity and community structure along a 2600 m elevational gradient on the eastern margin of the Qinghai-Tibetan Plateau 认领 引用 被引量：12
19
作者 Xiao-Yi Wang Mao-Jun Zhong +4 位作者 Jian Zhang Xing-Feng Si Sheng-Nan Yang Jian-Ping Jiang Jun-Hua Hu 《Zoological Research》 SCIE CSCD 2022年第1期40-51,共12页
Mountain systems harbor an evolutionarily unique and exceptionally rich biodiversity,especially for amphibians.However,the associated elevational gradients and underlying mechanisms of amphibian diversity in most moun... Mountain systems harbor an evolutionarily unique and exceptionally rich biodiversity,especially for amphibians.However,the associated elevational gradients and underlying mechanisms of amphibian diversity in most mountain systems remain poorly understood.Here,we explored amphibian phylogenetic and functional diversity along a 2600 m elevational gradient on Mount Emei on the eastern margin of the Qinghai-Tibetan Plateau in southwestern China.We also assessed the relative importance of spatial(area)and environmental factors(temperature,precipitation,solar radiation,normalized difference vegetation index,and potential evapotranspiration)in shaping amphibian distribution and community structure.Results showed that the phylogenetic and functional diversities were unimodal with elevation,while the standardized effect size of phylogenetic and functional diversity increased linearly with elevation.Phylogenetic net relatedness,nearest taxon index,and functional net relatedness index all showed a positive to negative trend with elevation,indicating a shift from clustering to overdispersion and suggesting a potential change in key processes from environmental filtering to competitive exclusion.Overall,our results illustrate the importance of deterministic processes in structuring amphibian communities in subtropical mountains,with the dominant role potentially switching with elevation.This study provides insights into the underlying assembly mechanisms of mountain amphibians,integrating multidimensional diversity. 展开更多
关键词 Community structure Elevational gradient Environmental filtering Functional and phylogenetic diversity Mountain systems
暂未订购 下载PDF
Effects of litter quality and climate change along an elevational gradient on litter decomposition of subalpine forests, Eastern Tibetan Plateau, China 认领 引用 被引量：8
20
作者 Zhenfeng Xu Jianxiao Zhu +3 位作者 Fuzhong Wu Yang Liu Bo Tan Wanqin Yang 《Journal of Forestry Research》 SCIE CAS CSCD 2016年第3期505-511,共7页
Temperature and freeze-thaw events are two key factors controlling litter decomposition in cold biomes.Predicted global warming and changes in freeze-thaw cycles therefore may directly or indirectly impact litter deco... Temperature and freeze-thaw events are two key factors controlling litter decomposition in cold biomes.Predicted global warming and changes in freeze-thaw cycles therefore may directly or indirectly impact litter decomposition in those ecosystems. Here, we conducted a2-year-long litter decomposition experiment along an elevational gradient from 3000 to 3600 m to determine the potential effects of litter quality, climate warming and freeze-thaw on the mass losses of three litter types [dragon spruce（Picea asperata Mast.）, red birch（Betula albosinensis Burk.）, and minjiang fir（Abies faxoniana Rehd. et Wild）]. Marked differences in mass loss were observed among the litter types and sampling dates. Decay constant（k） values of red birch were significantly higher than those of the needle litters. However, mass losses between elevations did not differ significantly for any litter type.During the winter, lost mass contributed 18.3-28.8 % of the net loss rates of the first year. Statistical analysis showed that the relationships between mass loss and litter chemistry or their ratios varied with decomposition periods. Our results indicated that short-term field incubations could overestimate the k value of litter decomposition.Considerable mass was lost from subalpine forest litters during the wintertime. Potential future warming may not affect the litter decomposition in the subalpine forest ecosystems of eastern Tibetan Plateau. 展开更多
关键词 Alpine forest Elevational gradient Freeze-thaw Global warming Mass losses
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 4 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈