DYNAMIC MONITORING OF SOIL AND WATER LOSSES USING REMOTE SENSING AND GIS TECHNIQUES: A CASE STUDY OF JIALING RIVER, YANGTZE RIVER, CHINA

Abstract

Water and soil loss problems are serious in China, especially in the upper and middle reaches of big rivers. This paper dynamically observed water and soil loss in key control regions in Jialing River Basin. Based on remotely sensed images, the method used in this paper is a combination of field investigation and indoor artificial interpretation under the technologies of RS and GIS. The method was proven to be effective of improving the accuracy of interpreting. The result shows the land use types of the researched regions and how they changed among the previous years. Evaluation of water and soil conservation was made. This result can provide references for further policy-making and water and soil loss controlling.