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以DEM数据、降雨数据、土壤数据和NDVI数据等为研究数据,采用RUSLE模型对研究区森林生态系统土壤保持量进行模拟,系统分析了其在水平空间和海拔高度上的空间分布特征,区域生态保护和土地合理利用具有重要意义。结果表明:(1)研究区森林生态系统土壤保持总量达到22.78万t,价值量为292.77万元;(2)土壤保持价值高值集中在西南部和南部边缘区域,低值分布在中部和北部区域;(3)冷热点分析显示土壤保持价值呈现出南“热”北“冷”、东西分化的空间格局;(4)单位面积土壤保持量和单位面积土壤保持价值量呈先随海拔升高而波动下降的趋势,但单位面积土壤保持价值整体变化趋势更为缓和。
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Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China,Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark,Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China,Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang, China,Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark,Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China,Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang, China,Division of Forest, Nature and Landscape, KU Leuven, Heverlee, Belgium,Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark,Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark,Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA,Ministry of Education Key Laboratory of Biodiversity and Ecological Engineering, Institute of Biodiversity Science, 200433, Shanghai, China,Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA,Center for Ecosystem Science and Society (Ecoss), Department of Biological Sciences, Northern Arizona University, 86011, Flagstaff, AZ, USA,Department of Earth System Science, Tsinghua University, 10084, Beijing, China,Department of Earth and Environment, Boston University, Boston, MA, USA,Department of Earth and Environment, Boston University, Boston, MA, USA,Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, USA,Key Laboratory for Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China,Huanjiang Observation and Research Station for Karst Ecosystem, Chinese Academy of Sciences, Huanjiang, China,Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark.Increased vegetation growth and carbon stock in China karst via ecological engineering[J].Nature Sustainability,2018.
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