Study on Dynamic Changes of the Soil Salinization in the Upper Stream of the Tarim River Based On RS and GIS

The Tarim River is the longest inland river in China, and the soil salinization is extremely severe in the upper stream of the Tarim River, Which has become the major obstacle that restrains oasis ecological stability and social economic development. This research attempts to monitor and interpret the soil salinization temporal and spatial dynamic changes in the upper stream of the Tarim River on the basis of RS, GPS, GIS, and massive data warehouse. In this paper, the soil salinization classification system was built, the remote sensing images were collected and analyzed in the springs of 1999, 2004 and 2008 respectively. The results show that: The total area of salinized soil continues on growing from 1 225 918.67 hm2 in 1999 to 1 268 030.03 hm2 in 2008. Different types of salinized soil frequently vary, and the degrees of it obviously become gradually weaker as a whole. To sum up, the watershed comprehensive governance project play a decisive e and significant role in improving the salinized soil in this region, and then promoting the ecological environment in the research region.