生态环境2003，Vol.12Issue(4)：427-430,4.
黑河流域土地退化分类研究
Classification of Land Degradation in the Heihe River Basin,Northwestern China
摘要
Abstract
Land degradation in the Heihe river basin in arid inland of northwestern China, is a very serious ecological problem mainly owing to the misuse of water resources. The most typical and serious form of land degradation in the basin is desertification. However, in the region, the precise characteristics of land degradation, such as the distribution, degree, area, are unknown. So understanding the current status, classification and spatial distribution of land degradation in the Heihe river basin is very important. Based on the data obtained through field investigation and Landsat TM (Thematic Mapper) imagery of July 2000, this present study outlined, interpreted several types, the status and spatial distribution of land degradation in the Heihe river basin, that is, water erosion in the southern mountains, desertified sandy land near the oases, aridization in the low reaches, salinization at the bottomlands. The total area of land degradation in the study area is 29971.91 km2, making up 23.06% of the entire land in the Heihe river basin.关键词
土地退化/黑河流域/分类/西北干旱区Key words
land degradation/Heihe river basin/classification/northwestern China分类
农业科技引用本文复制引用
齐善忠,王涛,封建民..黑河流域土地退化分类研究[J].生态环境,2003,12(4):427-430,4.基金项目
国家重点基础研究发展规划项目(G20000487) （G20000487）
