青海南部高寒区沙漠化灾害态势及驱动机制研究

沙漠化灾害是我国青藏高原严重的灾害之一。青海南部高寒区地处青藏高原腹地 ,是我国可持续发展的生态屏障。本文分析了沙漠化的现状及主要灾害表现 ,阐述了沙漠化灾害的主要驱动机制。本区沙漠化灾害的发生和发展是自然沙化过程与人为沙化过程共同作用于脆弱的承灾体的结果 ,它不仅影响和制约了当地的生存环境与经济发展 ,而且还危及到周边地区生态安全和区域可持续发展

Driving Mechanism and Status of Desertification Disaster in Southern Qinghai High Cold Region

Sandy desertification disaster is one of the most devastating disaster in Qinghai-Tibet plateau.The southern Qinghai high cold region is the main part of Qinghai-Tibet plateau,and has great ecological significance to sustainable development in china.In this paper, the area,type,distribution,degree and disaster damages of sandy desertification in southern Qinghai high cold region were analyzed, the main driving Mechanism was probed.It can be considered that the origination and development of sandy desertification disaster in southern Qinghai high cold region has been resulted from comprehensive of natural and artificial sandy desertification processes acting on vulnerability of hazard bearing body.The sandy desertification disaster has seriously damaged the ecological environment and social economic development in this region , and also seriously damaged the ecological security and regional sustainable development in peripheric region.