In this Paper

methods for monitoring soil moisture using remote sensing techniques

including backscattering coefficient using radar image

thermal inertia and crop water stress index using NOAA-AVHRR digital image

were disscussed and compared with conventional. mereorological methods

greenness indices and temperature difference. The results indicated that microwave remote sensing would be great prosperous for monitoring soil moisture

but its base must be researched. For the condition in China

the methods for monitoring soil moisture using NOAA-AVHRR digital image and meteorological station data to calculate thermal inertia

and evapotranspiration and crop water stress index

then estimate soil moisture were feasible.