基于RS和GIS的滇池流域水土流失动态监测  

Dynamical Monitoring of Water Loss and Soil Erosion in Dianchi Lake Basin Based on RS and GIS

作　　者：刘会玉[1] 王充[1] 林振山[1] 杨浩[1] 

机构地区：[1]南京师范大学地理科学学院,江苏南京210046

出　　处：《南京师大学报（自然科学版）》2012年第2期120-124,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(40901094);国家自然基金重点项目(41030751);教育部博士点新教师基金(20093207120009);江苏高校优势学科建设工程资助项目

摘　　要：以遥感数字影像、土地利用数据和DEM高程数据为数据源,借助ERDAS IMAGINE 9.2和ARCGIS9.3,对滇池流域1992年、2000年和2006年的水土流失的空间分布进行了动态监测.结果表明:(1)滇池流域水土流失强度呈现环形分布,水土流失较为严重的地区分布于环绕滇池沿岸的低山丘陵区和山区;(2)1992年～2000年滇池流域的水土流失形势恶化;(3)从2000年～2006年间,滇池流域的水土流失恶化形势得到有效遏制,说明退耕还林取得了一定的成效.The traditional method of water loss and soil erosion monitoring needs lots of field investigation, which is time - consuming and unable to satisfy the real-time monitoring request for soil erosion in watershed. In this paper, we have analyzed the spatial distribution of water loss and soil erosion in Dianehi Lake Basin based on RS and GIS technology. The results show that ： （ 1 ） The distribution of water loss and soil erosion is loop - shaped. The soil erosion, stronger than moderate erosion, is mainly distributed in foothill and mountain; （2） The intensity of water loss and soil erosion has worsened from 1992 to 2000 due to the pressure from population, urbanization and ecological environment; （3） The water loss and soil erosion turn better from 2000 to 2006 as a result of returnning the grain plots to forestry.

关 键 词：遥感 地理信息系统 滇池流域 水土流失 动态监测 

分 类 号：S157[农业科学—土壤学] TP7[农业科学—农业基础科学]