应用地物二向性反射识别草原鼠危害区

The application of NOAA/AVHRR data for identifying rat damaging area in the grassland

应用NOAA/AVHRR数据识别川西北高原若尔盖县草原鼠危害区的研究。结果表明,在波长0.725～1.100 μm 波段,地物的二向性反射能较好地识别草原鼠危害区。将波长3.55～3.93 μm 的红外辐射亮温加入分类因子,能提高识别效果。此技术能较好地识别草原鼠害区,并能较好地识别有水沼泽、无水沼泽、沙化草地及高山区。

The application of NOAA/AVHRR satellite data in the identification of rat damaging area in the grassland of northwest plateau of Sichuan was reported in this paper. It indicated that (i) the rat damaging areas of grassland can be identified by Bi directional Reflectance with wavelength between 0.725～1.100 μm; (ii) the accuracy of identification was improved by adding classification factors into infrared radiation brightness temperature with wavelength between 3.55～3.93 μm. The application of this method can improve the identification of wet swamp, dry swamp, sandy grassland and mountainous areas as well.