摘要
在遥感和地理信息系统技术的支持下,分析了漾濞江流域土壤侵蚀动态变化情况。结果表明:1990-2001年,土壤侵蚀面积从275 867.24 hm2减小到247 282.09 hm2,总侵蚀模数由1 830.37 t/(km2.a)降低到1729.04 t/(km2.a),总侵蚀量由7 967 560.11 t减少到7 526 463.32 t,均呈现出减小的趋势,土壤侵蚀治理状况明显好转;1990年轻度侵蚀和中度侵蚀所产生的侵蚀量占到总侵蚀量的75.46%,2001年轻度侵蚀和中度侵蚀所产生的侵蚀量占到研究区总侵蚀量的73.13%,轻度侵蚀和中度侵蚀以及耕地侵蚀控制是整个研究区治理工作的重点。
Analyzing the condition of soil erosion dynamic changes was conducted in Yangbijiang River basin by means of RS and GIS.The results show that soil erosion has been alleviated with erosion area dropping from 275 867.24 hm2 to 247 282.09 hm2,total erosion modulus decreasing from 1 830.37 t/（km2·a） to 1 729.04 t/（km2·a）and total erosion amount reducing from 7 967 560.11 t to 7 526 463.32 t.The amount of mild erosion and moderate erosion respectively accounts for 75.46% and 75.46% of the total amount in 1990 and 2001.The mild erosion,moderate erosion and grassland erosion control is the core of the handing operation.
出处
《水土保持研究》
CSCD
北大核心
2010年第5期134-137,共4页
Research of Soil and Water Conservation
基金
国家"973"项目专题(2003CB415105-6)
