凉山山系小熊猫（Ailurus fulgens）分布区景观格局

Landscape patterns result from various ecological processes. In turn, these patterns strongly affect the biological processes of wild populations and influence the structure and distribution of them. The landscape spatial pattern in 2000 was analyzed using Landsat TM/ETM images and the program FRAGSTATS. Landscape diversity, patch characteristics, and the spatial distribution attributes of different landscape elements were analyzed quantitatively. Three aspects of the spatial landscape within study area were analyzed here. First, a variety of landscape indices, such as the proportional index of landscape components, diversity index and shape index, are selected for at the landscape and class levels to show the primary characteristics of the landscape in Liangshan Mountains. The result shows that the landscape diversity is rich and the shape is complex within the habitat area. Cold-temperate coniferous forest occupies the largest area with an average patch area of 61.65hm2. Secondly, indices describing nearest-neighbor distances and patch gaps are used to express the spatial adjoining relationship and spatial fragmentation between red panda habitat and other land use/cover categories. The results indicate that the forest patches are mostly close and not very fragmented. Finally, the spatial fragmentation and suitable habitat distribution of red panda habitat were analyzed. The result tells us that the red panda distribution area is 219055hm^2 in areas where the forest patches are mostly close and relatively unfragmented. The present amount of suitable habitat is 209568hm^2 with 3763 hm2 (3.17%) lost due to anthropogenic effects. Three fragile areas should be given more attention, especially the yiziyakuo area located on the road between Meigu and Ebian counties.