【摘要】 利用 1999年和 2 0 0 2年两期内蒙古阿拉善左旗TM遥感图像 ,进行大沙鼠鼠害防治前后梭梭林受害程度调查。对比分析了防治区与对照区植被生长状况 ,分析了健康和受害植被的光谱特征、其背景的纹理特征。用土壤调节植被指数和统计分类的方法 ,得出了受害植被的生长状况、健康植被面积增长量及对照区植被生长情况的相关数据。与实地害鼠密度的变化验证比较 ,为鼠害防治管理和动态监测提供科学依据。更多还原

【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.更多还原