向海自然保护区鹤类生境优化水位的模拟

摘要

The probability of crane living in reedy wetlands can reach 100%, at the same time, thearea of reed, the water level and adjacent water area are main factors which control the crane'shabitat selection. We all know that all these factors are spatially heterogeneous. For the Xianghaiwetland safety and to protect the Xianghai wetland habitat of crane, this paper has mainly identifieda solution to these problems. The wetland information is extracted from the TM images, whichreflect the whole wetland landscape and are very important for both quantitative analysis of remotesensing observation of the earth system and positioning analysis in GIS database that is automaticallyextracted from DEM. The DEM for Xianghai characteristics of topography is created. On the basis ofthe GRID SUBMODULE, applying the GIS spatial overlay analysis, the relationship between thewater level and the reed area below the water level and the rating distribution maps of reed areaabove water level is established. When the water level reaches the altitude of 165 m, the reed area,981.2 ha is maximum, i.e., the water level of 165 m is the optimal.