准噶尔盆地东部土壤风蚀危险度评价

以准噶尔盆地东部露天矿区为研究区，基于GIS技术和土壤风蚀理论，结合研究区自然环境现状，选取植被覆盖度、土地利用类型、土壤可蚀性指数（K值）、地形起伏度为土壤风蚀危险度评价因子，建立土壤风蚀危险度模型，对研究区土壤风蚀危险度进行评价分析。结果表明：研究区土壤风蚀无险型区域面积28.99 km²（0.13%），轻险型区域面积为2 100.66 km²（9.42%），危险型区域面积为5 066.56 km²（22.72%），强险型区域面积为14 593.12 km²（65.44%），极险型区域面积为646.7 km²（2.29%）。在各个因子的影响下，研究区的风蚀危险度极高，强险型为研究区内最主要的等级程度。研究区土壤风蚀危险度从南向北危险度有增加的趋势，且成片状分布，与实际情况相吻合，说明基于GIS技术的土壤风蚀危险度评价可宏观地揭示新疆准东地区土壤风蚀危险度空间格局分异特征。

Assessment of Wind Erosion Hazard Degree in the Zhundong Area,Xinjiang, China

Based on wind erosion theories and GIS technologies, this article took Zhundong Opencast Mine Areas as the studied area. This research built a wind erosion hazard degree model with impact factors as follows:the vegetation coverage, land use types, soil erodibility (K), undulating terrains. The wind erosion hazard degree in the studied area was evaluated and analyzed based on the model. The results showed that the area of no hazard was 28.99 km²(0.13%), the slight hazard was 2 100.66 km²(9.42%), the hazard was 5 066.56 km²(22.72%), the severe hazard was 14 593.12 km²(65.44%), and the intense hazard was 646.7km²(2.29%). The erosion hazard degree of the studied area was turned out to be serious with influences of varies factors, and the severe hazard became the main degree. There was an increasing trend of erosion hazard degree from the south to the north with patch distribution, which matched the actual situation.