北京市密云水库上游坡地水土流失监测系统的建立及应用

以北京市密云水库上游为示范监测区,利用遥感及地理信息系统,通过坡度、土地利用和植被覆盖度专题图形制作、交叉分析和土壤侵蚀强度判别,进行流域自然状况及水土流失面积调查;根据坡地土壤侵蚀区分布及坡地水土保持治理情况布设坡地径流小区,观测各类型区水土流失量及污染物流失量;分析计算全流域的水土流失量、污染物流失量及治理措施的水土保持效益。

Establishment and Application of Monitoring System to So il and Water Loss on Sloping Land of the Upper Miyun Reservoir,Beijing

Take the upper Miyun reservoir,as the demonstrative observation plot,the natural situation and area of soil and water loss in this area is investigated with slope,land use and vegetative cover rate maps making,differentiation of soil erosion density etc. by using remote sensing and GIS;according to the distribution area of soil erosion on sloping land and control situation,runoff plots were set up,the amount of soil and water loss and contamination of all types of plots are observed;the volume of soil and water loss and contamination in whole watershed are calculated also.