摘要
以遥感数据和观测数据为数据源,基于改进的SEMMED土壤侵蚀模型,对祖厉河流域1999年和2001年土壤侵蚀的空间变换进行了模拟和对比。结果表明,流域土壤侵蚀最严重的区域主要集中在葛家岔站点附近、草滩站附近和北部葛家寨和靖远一带,流域中南部的土壤侵蚀通常小于北部。在北部的屈吴山,以及与宁夏交界的月亮山还有华家岭由于植被覆盖度较高,很好的起到了减少径流,抑制土壤侵蚀的作用。降水的年际差异导致本区的土壤侵蚀年际差异较大。
Serious soil erosion is both the cause and the result of Eco-environment degradation in Chinese Loess Plateau.In this paper,the soil erosion of Zuli River Basin in 1999 and 2001 were estimated by modified SEMMED model which input the remote sensing data and observed precipitation data and under GIS environment.It indicates that the most serious soil erosion areas include Gejiacha,Caotan,Gejiazai and Jingyuan.The soil erosion in central and Southern part is less than that of Northern part.The Quwu Mountain,Yueliang Mountain and Huajialing have high vegetation cover and less soil erosion.The results suggest that the great annual fluctuation of soil erosion due to the fluctuation of precipitation.
出处
《遥感技术与应用》
CSCD
北大核心
2009年第6期772-776,I0002,共6页
Remote Sensing Technology and Application
基金
兰州商学院科研项目(0909020)资助
