Soil salinization study in angulinao wetlands based on multi-source remotely sensed imagery

摘要

Since remote sensing has much advantage in obtaining information of the surface, it has been more and more often used in the land monitoring. In this paper, there are three frames of remote sensing data including one ETM data in 2001, one CBERS data in 2004 and one AVNIR data in 2007 of the study area. Using the method of decision tree, wetlands, water, vegetation, bare land, light salinity and heavy salinization are successfully separated from the land surface. The reasons of soil salinization in this area have been analyzed. In Angulinao Lake area, the accumulationof soil salinization are caused by the following three factors: arid climate, hydrologic geology and human factors.