Abstract:

Damage extent was investigated in Haloxylon ammodendron Bunge Stands before and after treating Rhombomys opimus by using double date TM remote sensing imagery of 1999 and 2002 in Alashan, Inner Mongolia. Vegetation growth condition was compared and analyzed between treated and contrast area. The vegetation spectral feature and their background texture were analyzed on both healthy and damaged vegetation. The growth condition of damaged vegetation,the increased area of healthy vegetation and the relative growth data on contrast area were derived through the methods of soil adjusted vegetation index (SAVI) and statistic classification. The results were testified and compared with the ground truth of mouse density. The study provides a scientific basis for monitoring,prevention and combating of mouse disaster.

Key words: TM imagery;Monitoring mouse disaster;Soil, adjusted vegetation index;Mouse density