首页|Carbon sink response of terrestrial vegetation ecosystems in the Yangtze River Delta and its driving mechanism
Carbon sink response of terrestrial vegetation ecosystems in the Yangtze River Delta and its driving mechanism
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The carbon cycle of terrestrial ecosystems is influenced by global climate change and human activities.Using remote sensing data and land cover products,the spa-tio-temporal variation characteristics and trends of NEP in the Yangtze River Delta from 2000 to 2020 were analyzed based on the soil respiration model.The driving influences of eco-system structure evolution,temperature,rainfall,and human activities on NEP were studied.The results show that the NEP shows an overall distribution pattern of high in the southeast and low in the northwest.The area of carbon sinks is larger than that of the carbon sources.NEP spatial heterogeneity is significant.NEP change trend is basically unchanged or signif-icantly better.The future change trend in most areas will be continuous decrease.Compared with temperature,NEP are more sensitive to precipitation.The positive influence of human activities on NEP is mainly observed in north-central Anhui and northern Jiangsu coastal ar-eas,while the negative influence is mainly found in highly urbanized areas.In the process of ecosystem structure,the contribution of unchanged areas to NEP change is greater than that of changed areas.
carbon sinksterrestrial vegetation ecosystemsdriving mechanismsclimate changehuman activitiesecosystem structureYangtze River Delta
ZHAO Haixia、FAN Jinding、GU Binjie、CHEN Yijiang
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Nanjing Institute of Geography and Limnology,CAS,Nanjing 210008,China
School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China
Nanjing College,University of Chinese Academy of Sciences,Nanjing 211135,China
School of Agricultural and Food Science,The University of Queensland,Queensland 4072,Australia
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