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本文根据研究区域的自然环境特征,在GIS支持下,通过单因子分析和多因子综合评价相结合,对研究区域土壤盐渍化敏感性进行了评价,明确了土壤盐渍化敏感性分布规律及其地域差异。结果表明,研究区域土壤盐渍化危险性较严重—敏感性区域主要以中度敏感性、轻度敏感性为主,其中土壤盐渍化重度敏感区面积占绿洲总面积的15%,中度敏感区占31%,轻度敏感区占30%;不敏感区面积占35%;从整个研究区来看,盐渍化敏感性的分布呈现出以下特点:一是盐渍化危险性区域,尤其是中度、重度敏感区域呈大面积区域性分布,轻度敏感性区域呈片状或斑点状断续分布;二是盐渍化危险性东部高于西部,南部高于北部的趋势。
Based on the characteristics of the natural environment in the study area, the sensitivity of soil salinization in the study area was evaluated through the combination of single factor analysis and multifactorial evaluation with the support of GIS. The sensitivity of soil salinity distribution and the distribution of soil salinization sensitivity were clarified. Its geographical differences. The results showed that the risk of soil salinization was more serious in the study area. The sensitive areas were mainly moderately sensitive and mildly sensitive. Among them, the areas heavily affected by soil salinization accounted for 15% of the total area of the oasis, Sensitive area accounted for 31%, mild sensitive area accounted for 30%; insensitive area accounted for 35%; from the entire study area, the distribution of salinization sensitivity showed the following characteristics: First, the salinization risk areas, Especially, moderately and severely sensitive areas showed a large area with regional distribution, while mildly sensitive areas showed intermittent distribution with patchy or spotted spots. Second, the risk of salinization was higher in the eastern part than in the west part and higher in the southern part than in the northern part.