| GIS技术在区域土壤退化敏感性评价中的应用 |
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| 引用本文： | 赵凤琴,;汤洁,;王忠恕.GIS技术在区域土壤退化敏感性评价中的应用[J].中国科技论文在线,2008(5):359-364. |
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| 作者姓名： | 赵凤琴 ;汤洁 ;王忠恕 |
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| 作者单位： | [1]辽宁师范大学生命科学学院,辽宁大连116029; [2]吉林大学环境与资源学院,长春130026; [3]大连市金州区环境保护局,辽宁大连116100 |
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| 基金项目： | 国家自然科学基金项目（40273047 40572170） |
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| 摘 要： | 在生态环境较脆弱的吉林省西部地区,应用GIS多边形叠置分析技术划分了6395个评价单元,选取了6项土壤退化敏感性指标,将土壤退化的敏感程度分为非敏感、轻度敏感、中度敏感和极敏感四级,采用层次分析和二级模糊综合评判相结合的方法进行敏感性评价,并通过GIS技术实现评价结果的分区和可视化。结果表明,本文所采用的评价方法能够有效提高评价精度,吉林西部土壤退化以轻度敏感为主,中度敏感和极敏感次之,非敏感地区占土地总面积的份额最小。
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| 关 键 词： | 生态学 土壤退化敏感性评价 GIS 层次分析法 模糊综合评判 |
Application of GIS technology in the evaluation of sensitivity to soil degeneration |
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| Institution: | ZHAO Fengqin,TANG Jie,WANG Zhongshu (1. College of Life Sciences, Liaoning Normal University, Dalian, Liaoning 116029; 2. College of Environment and Resource, Jilin University, Changchun 130026; 3. Jinzhou Borough Environmental Protection Bureau of Dalian City, Dalian, Liaoning 116100) |
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| Abstract: | The sensitivity to soil degeneration was evaluated in the west of Jilin province. The degree of sensitivity was divided into non-sensitivity, low-sensitivity, high-sensitivity and the highest-sensitivity. The evaluating cells were ascertained by means of polygon overlay in GIS system, there were 6 395 cells in the research area. The AHP model was used to ascertain the weightiness of evaluating element, the Fuzzy model was used to evaluate the level of sensitivity to alkali-saline land. At last, the sub area and videotexts of result were achieved by GIS technology. The result showed that the method in this paper could improve the precision of evaluation. The low-sensitivity was the most sensitivity to soil degeneration, the high-sensitivity and the highest-sensitivity were take the second place, and the non-sensitivity was the least. |
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| Keywords: | ecology evaluation of sensitivity to soil degeneration GIS AHP Fuzzy |
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