准噶尔盆地东部土壤风蚀敏感性分级及其区划研究

发布时间：2018-12-12 02:49

【摘要】：选取影响准东地区土壤风蚀的4个敏感性因子(风场强度、植被覆盖度、地形起伏度、土壤干燥度),结合GIS空间分析技术,将4个因子的敏感性划分为极敏感、高度敏感、中度敏感、低度敏感和不敏感5个等级,利用层次分析法(AHP)确定敏感性因子权重,最后确定准东地区土壤风蚀综合敏感性分级及其分布规律,并对准东地区进行区划研究。结果表明:准东地区土壤风蚀敏感性在空间分布上存在显著差异,总体呈现为北高南低,西高东低的分布态势;极敏感区、高度敏感区、中度敏感区、低度敏感区和不敏感区分别占准东地区总面积的15.27%、17.20%、22.66%、19.49%和25.38%。通过对准东地区土壤风蚀敏感性分级研究,并提出其分区保护与建设措施,以期为准东地区经济发展与环境保护提供科学参考。
[Abstract]:Four sensitive factors (wind field intensity, vegetation coverage, topographic fluctuation, soil dryness) affecting soil wind erosion were selected. The sensitivity of the four factors was divided into extremely sensitive and highly sensitive, combined with GIS spatial analysis technology. Five grades of moderate sensitivity, low sensitivity and insensitivity were determined by using AHP (AHP) to determine the weight of sensitivity factors. Finally, the comprehensive sensitivity classification and distribution law of soil wind erosion were determined, and the zonation of the area was studied. The results showed that there were significant differences in the spatial distribution of soil wind erosion sensitivity in the eastern part of the province, and the distribution trend of north high and south low, west high and east low; Extremely sensitive area, high sensitive area, moderate sensitive area, low sensitive area and insensitive area account for 15.27% and 25.38% of the total area of Zhundong area, respectively. Based on the classification of soil wind erosion sensitivity in Zhundong area, the paper puts forward the measures of zonal protection and construction in order to provide a scientific reference for the economic development and environmental protection in the quasi-eastern region.
【作者单位】：新疆大学资源与环境科学学院;教育部绿洲生态重点实验室;新疆维吾尔自治区水土保持生态环境监测总站;
【基金】：新疆维吾尔自治区自然科学基金(2014211A018)
【分类号】：S157.1

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