| 基于GIS的干旱区土壤盐渍化敏感性评价——以渭干河-库车河三角洲绿洲为例 |
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| 引用本文： | 买买提·沙吾提,塔西甫拉提·特依拜,丁建丽,张飞.基于GIS的干旱区土壤盐渍化敏感性评价——以渭干河-库车河三角洲绿洲为例[J].资源科学,2012,34(2):353-358. |
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| 作者姓名： | 买买提·沙吾提 塔西甫拉提·特依拜 丁建丽 张飞 |
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| 作者单位： | 新疆大学资源与环境科学学院,乌鲁木齐830046／新疆大学绿洲生态教育部重点实验室,乌鲁木齐830046 |
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| 基金项目： | 国家自然科学基金项目(编号:40901163,40961025);新疆维吾尔自治区高校科研计划青年教师科研项目(编号:XJEDU2011S07);资源与环境信息系统国家重点实验室开放课题(编号:2010kf0003sa) |
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| 摘 要： | 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。
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| 关 键 词： | 土壤盐渍化 敏感性评价 层次分析法(AHP) 渭干河-库车河三角洲绿洲 |
| 收稿时间： | 8/5/2011 12:00:00 AM |
A GIS-Based Assessment on Sensitivity of Soil Salinization in Arid Areas: A Case Study of the Ugan-Kuqa River Delta |
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| Mamatsawut,Tashpola·tTiyip,DING Jianli,ZHANG fei.A GIS-Based Assessment on Sensitivity of Soil Salinization in Arid Areas: A Case Study of the Ugan-Kuqa River Delta[J].Resources Science,2012,34(2):353-358. |
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| Authors: | Mamatsawut Tashpola·tTiyip DING Jianli ZHANG fei |
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| Institution: | College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China; Key Laboratory of Oasis Ecology Ministry of Education, Urumqi 830046, China;College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China; Key Laboratory of Oasis Ecology Ministry of Education, Urumqi 830046, China;College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China; Key Laboratory of Oasis Ecology Ministry of Education, Urumqi 830046, China;College of Resource and Environment Sciences, Xinjiang University, Urumqi 830046, China; Key Laboratory of Oasis Ecology Ministry of Education, Urumqi 830046, China |
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| Abstract: | Salinity is the most common land degradation processes occurring in all continents and under almost all climatic conditions, but they are more extensive in arid and semiarid regions than in humid ones. This is because of relatively low rainfall and high evapotranspiration. Under such a climatic condition, soluble salts are accumulated in the soil, influencing soil properties and the environment which cause declining soil productivity. The consistent identification of the processes, large scale mapping, monitoring of salt-affected areas and assessment on sensitivity are essential for sustainable soil management. As salinity prevention is more cost-effective (in economic and environmental terms) than remediation, salinity hazard information is a critical planning tool for soil management. A number of factors determine salinity hazard of an area. Once these factors are identified, a salinity hazard map can be produced. Salinity is a key environmental issue in the Ugan-Kuqa River Delta. Over the last 30 years, numerous studies have been conducted in an attempt to enhance our understanding and to try to remedy this growing problem. However, the extent of primary and secondary salinity continues to expand. This study was based on the assumption that there is strong correlation between dryland salinity and certain land features including geology, land use, soils, hydrogeology, climate, landforms, and vegetation. These features can be taken into account together to form a salinity hazard map by the Analytical Hierarchy Process (AHP) method and GIS technology. Also, the salinity hazard maps have been generated for the study area. Results show that distribution of the sensitivity is serious in the study area, which is dominated by moderate and slightly sensitive regions. The serious sensitive region covers 15%, moderate sensitive region covers 31%, slight sensitivity region covers 30%, and non-sensitive region covers 35% of the total area. The spatial distributions of the sensitive regions are characterized that the serious and moderate sensitive regions are extensively distributed, while the slight sensitive region is concentrated in stripes in oasis. Sensitivity of soil salinization in the eastern study area is higher than western parts. The southern part of the study area is higher than the northern part. The maps and related analysis and interpretation in this paper provide a useful framework for sustainable development in the study areas, as well as providing an important environmental baseline data set for development. |
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| Keywords: | Soil salinization Sensitivity Analytic Hierarchy Process (AHP) Ugan-Kuqa River Delta |
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