Retrieval of Soil Salt Content Base on High Resolution Remote Sensing Data

Abstract

Soil salinization is one of the most common land degradation processes in arid and semi-arid regions that impact the growth of many crops. Remotely sensed data has great potential for monitoring dynamic processes, including salinization. But the fluctuant microtopography controls the space distribution of soil salinity, make its have strong heterogeneous that the saline vegetation and saline soil performance the characteristics of mosaic distribution. This kind of complex and unique land surface lead to precisely retrieval of soil salt content based on remote sensing have some constraints. In this paper, we take the Changling County as the study area and through the 30cm high resolution remote sensing data, which is close to the size of field sampling, photographed by airship to improve the accuracy based on remote sensing for retrieving of soil salt content. Result showed that the overall accuracy of high resolution remote sensing in retrieving soil salinity was 83.94%. At the same time, the result suggests that remote sensing is a useful tool to detect soil salinity. Keywords-soil salinizationt; soil salt content; high resolution remote sensing; field sampling