LISEM模型及其应用  

LISEM Model and Its Application

作　　者：贾媛媛[1] 郑粉莉[1] 

机构地区：[1]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室

出　　处：《水土保持研究》2004年第4期91-93,120,共4页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目(40335050);中国科学院知识创新重要方向项目(KZCX3-SW-422)

摘　　要：LISEM是第一个与GIS完全集成并直接利用遥感数据的土壤侵蚀预报模型,可用来计算流域内各点径流和侵蚀量。在简要介绍LISEM模型研发背景的基础上,系统剖析了该模型的基本理论框架,详细介绍了模型涉及的各种物理过程,并对模型运行所需输入的数据和运行输出的结果作了归纳。通过LISEM应用结果分析,认为只有采用空间分布式数据才能取得较好的预报结果。根据我国黄土高原侵蚀环境特点,采用一系列措施对LISEM修正后,可用于该区土壤侵蚀过程模拟。LISEM model is the first example of a physically-based soil erosion prediction model that is completely incorporated in a Geographical Information System(GIS) and can use the data from remote sense directly. The model can be used to calculate flow discharge and sediment yield. Based on introducing LISEM development background, theoretical frameworks were analyzed. The physical processes were introduced in detail, and input and output of the model were summarized. It could be concluded from LISEM application that the better results can be obtained only by using spatial distributed data. Based on erosion environmental characters on the Loess Plateau, LISEM could be applied to simulate soil erosion process by being revised its parameters.

关 键 词：LISEM 分布式 物理过程 GIS 

分 类 号：S157.1[农业科学—土壤学] TP79[农业科学—农业基础科学]