土壤侵蚀遥感调查——以重庆市忠县为例

土壤侵蚀调查是治理水土流失的基础，仅采用传统的调查和统计方法，耗时、耗力且数据准确度低。近年来，遥感（RS）与地理信息系统（GIS）结合来进行土壤侵蚀调查方法得到了广泛应用，其准确性、时效性及效率高等特点是传统方法难以做到的。以遥感影像为主要信息源，利用ERDAS和ARC／INFO等地理信息软件强大的空间分析功能，结合实地采样对重庆市忠县地区进行了土壤遥感调查，为忠县地区的水土保持规划提供了科学依据和决策支持，并对该地区的经济和环境可持续发展起到了积极作用。

Soil Erosion Investigation by Remote Sensing——A Case Study of Zhongxian Region,Chongqing

Investigation of soil erosion is the basal process of soil and water loss control. Traditional investigation and statistic methods is not only time and strength consuming, but also imprecise. In recent years, the using of RS and GIS become widely in soil erosion investigation. Its veracity, velocity, less time consumption and strength-savlng are unexampled in traditional methods. Based on the primary information derived from TM image, resorting to the powerful function in spatial analysis of ERDAS and ARC/INFO, and the field survey, the soil erosion remote sensing investigation in Zhongxian county was carried out. The study provides scientific basis and support of policy decision for soil and water conservation in this region, and has a positive effect on the sustainable development of economy and society of this area.