Suitability evaluation and spatial distribution characteristics of wilderness area on the Qinghai-Tibet Plateau
Rewilding is an important means of biodiversity conservation in the Anthropocene and under climate change.As the basic spatial carrier of rewilding,the scientific identification and protection of wilderness area is of great significance for improving the efficiency of biodiversity conservation.Taking the Qinghai-Tibet Plateau as a case area and using 2020 as the time point,this study analyzed the concept and connotation of wilderness,and comprehensively evaluated the suitability of rewilding from the two dimensions of ecological factor suitability and ecosystem naturalness by using the suitability assessment of rewilding,spatial pattern analysis of wilderness area,and morphological analysis.The results show that:1)The suitability index of rewilding on the Qinghai-Tibet Plateau ranged from 0.1310 to 0.9332,and the spatial distribution of wilderness areas on the plateau showed obvious regional differentiation,with a spatial pattern of gradually declining from southeast to northwest.2)The spatial structure of wilderness area was relatively simple,and the morphological characteristics were decentralized and large-scaled.The optimal wilderness area mainly concentrated in the evergreen broad-leaved forest belt of the southern wing of the eastern Himalaya,while the alternative and potential wilderness area gradually spread to the coniferous forest of the eastern mountains of Sichuan and Tibet,the grassland of the Qilian Mountains in eastern Qinghai,and the desert belt of the northern wing of the Kunlun Mountains in the northwest of the Qinghai-Tibet Plateau.3)The optimization of wilderness area on the Qinghai-Tibet Plateau is affected by the distribution of important ecological functional zones,especially the source zones of large rivers.Influenced by its natural geographical conditions and human activities,the wilderness area on the Qinghai-Tibet Plateau is currently concentrated in the evergreen broad-leaved forest of the southern wing of the eastern Himalaya and the coniferous forest of the eastern mountains of Sichuan and Tibet in the east,while few and small in the source zones of large rivers in the west.The study results can provide a useful reference for improving the theory of conservation biology,optimizing the biodiversity conservation network,and enhancing the efficiency of biodiversity conservation on the Qinghai-Tibet Plateau.
NETL
NSTL
万方数据
维普
