The Surface Water Vulnerability Assessment of Arid Pastoral Areas

In recent years, human being´s inappropriate development and utilization on water resources, together with the influence of climate change, Chinese arid pastoral areas has suffered serious threat to the sustainable utilization of water resources and ecological security. Under the current conditions, the grassland production development way of China´s pastoral areas is mainly animal husbandry industry, and irrigation water is the most widespread water use habits. Therefore, taking the Damao County as a research area, which is a typical arid pastoral area in China, this paper summarize and define the surface water resources vulnerability attribute of pastoral area, and research the content of surface water resources vulnerability from the aspects of natural vulnerability, human vulnerability and carrying vulnerability. And then the corresponding surface water resources vulnerability assessment index system of arid pastoral areas can be set up, the results of the study show that the vulnerability performance of Damao County is obvious, from the view of vulnerability´s spatial distribution, the northern and western areas are much more sensitive than other areas. What´s more, the research results also can tell us that the vulnerability contribution of surface water resources on Damao County from high to low in turn is natural vulnerability, human vulnerability, carrying vulnerability.