A STUDY OF THE METHODS OF REMOTE SENSING RETRIEVING THE SOIL MOISTURE

Soil moisture is the key Variables of land surface parameterized.Soil water content is changed with spatial and temporal variation which put significant effect on land,atmospheric heat balance,soil temperature and farmland moisture condition.The traditional soil moisture measurement method samples slowly,costly and bad representativeness,it is unable to meet the real-time need monitoring on a large scale.Monitoring soil moisture based on remote sensing has overcome the above-mentioned shortcomings.It is one of the front studies in quantitative remote sensing.This paper has made a review on the remote sensing information models for monitoring soil moisture.And these methods and their advantages and disadvantages have been summarized.Further the key problem for solving in these models’ has also been discussed.