陈学文,Richard M.Cruse,Brian K.Gelder,Timothy J.Sklenar,Daryl E.Herzmann,David E.James,李浩,张兴义

• 1:中国科学院 东北地理与农业生态研究所 黑土区农业生态重点实验室
• 2:Iowa State University
• 3:National Laboratory for Agriculture and Environment
• 4:United States Department of Agriculture

摘要(Abstract)：

土壤侵蚀发布系统作为定量研究土壤侵蚀过程的重要工具,一直是土壤侵蚀学科的前沿领域,其对于估算土壤流失速度、评估水土保持措施效益具有重要的科学意义。然而,现有土壤侵蚀发布系统多仅依靠一年内降雨事件或利用多年平均降雨数据进行潜在土壤侵蚀程度估算,无法对一次平均水平的土壤侵蚀事件进行定量描述,更无法回答土壤侵蚀在何时何地发生,侵蚀动态如何变化,以及降雨、地形、土壤、作物管理方式和极端事件的时空变化对土壤侵蚀的影响。作为土壤侵蚀发布系统领域最新研究进展的土壤侵蚀日发布系统DEP(Daily Erosion Project),解决了以往土壤侵蚀发布系统中出现的上述问题。DEP基于侵蚀模型、地理信息、土地利用、植被变化等信息,逐日模拟降雨、径流、剥离、土壤流失等定量指标,结合第二代气象雷达云图生成土壤侵蚀分布图,实现以日为步长的土壤侵蚀发布,成为首个土壤侵蚀日发布系统,已在美国成功应用。本文详细介绍了土壤侵蚀日发布系统,并对实例进行了分析,探讨了该系统在我国土壤侵蚀发布研究与应用中的前景。

关键词(KeyWords)： 土壤侵蚀发布系统;WEPP;激光雷达;第二代气象雷达;数字高程模型;支流集水区

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目资助(2017YFC0504200)

作者(Author): 陈学文,Richard M.Cruse,Brian K.Gelder,Timothy J.Sklenar,Daryl E.Herzmann,David E.James,李浩,张兴义

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