关键词: 铜尾矿, 重金属, 污染, 富集, 凤丹

Abstract: The habitat of giant panda in Qinling Mountains is segmented by the YangTai highway, a provincialclass highway from Yangxian County to Taibai County, Shaanxi Province, which could impact the communications between giant panda populations. With the remote sensing images from Beijing No. 1 Satellite as the data source, and by using multilayer information extraction method, this habitat before the highway construction was classified into different landscape types, and the classification results were updated under the support of GIS software ArcMap to simulate the landscape pattern after the highway construction. Based on these, the landscape indices of the habitat before and after the highway construction were calculated at patch and landscape scales by using Fragstats. This highway passed through 9.4 km forest patches. At the both sides within the range of 500 m along the highway, about 6.9% of the land areas were converted into construction land, among which, forest land decreased by 0.9%, and the patch fragmentation increased. The Shannon Index and Contagion Index varied most within the range of 300 m, but tended to be declined with increasing distance to the highway, which suggested that the impact of the highway on the landscape pattern decreased with increasing spatial scale. Some suggestions were given on the conservation and management of giant panda’s habitat.

Key words: Copper tailings yard, Heavy metal, Contamination, Accumulation, Paeonia ostii