| 基于GIS和模糊物元贴近度聚类分析模型的耕地质量评价 |
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| 引用本文： | 聂艳,周勇,于婧,梁本望,罗代平. 基于GIS和模糊物元贴近度聚类分析模型的耕地质量评价[J]. 土壤学报, 2005, 42(4): 551-557 |
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| 作者姓名： | 聂艳 周勇 于婧 梁本望 罗代平 |
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| 作者单位： | 1. 华中农业大学资源环境学院,武汉,430070
2. 湖北省宜都市国土资源局,湖北,宜都,443000 |
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| 基金项目： | 国家自然科学基金(批准号:40271056)，中德农业科技合作2004/2005项目计划(No.48)项目资助 |
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| 摘 要： | 利用ArcGIS和模糊物元贴近度聚类分析模型,以原始数据为基础,对湖北省宜都市耕地质量进行了评价。(1)采用主成分分析法确定耕地质量影响因素;(2)利用ArcGIS矢量化提取相关图层并进行相应的空间分析后,采用多图层叠加确定评价单元和获取单元属性数据;(3)根据各评价因子的隶属函数,应用模糊物元贴近度聚类分析模型计算评价因子的权系数和评价单元的贴近度,经过聚类分析划分耕地质量级别,并进行抽样检验结果的准确性。结果表明:宜都市耕地质量中等,I至VI级地分别占12·96%、30·37%、31·71%、16·16%、7·14%和1·66%。经实地检验评价结果基本与实际情况相符。
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| 关 键 词： | GIS 模糊物元贴近度聚类 质量 耕地 |
| 收稿时间： | 2004-06-18 |
| 修稿时间： | 2004-09-12 |
FARMLAND QUALITY EVALUATION BASED ON GIS AND FUZZY MATTER-ELEMENT PROXIMITY CLUSTER ANALYSIS MODEL |
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| Nie Yan,Zhou Yong,Yu Jing,Liang Benwang and Luo Daiping. FARMLAND QUALITY EVALUATION BASED ON GIS AND FUZZY MATTER-ELEMENT PROXIMITY CLUSTER ANALYSIS MODEL[J]. Acta Pedologica Sinica, 2005, 42(4): 551-557 |
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| Authors: | Nie Yan Zhou Yong Yu Jing Liang Benwang Luo Daiping |
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| Affiliation: | Nie Yan~1 Zhou Yong~1 Yu Jing~1 Liang Benwang~2 Luo Daiping~2[WT] |
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| Abstract: | With the original data as basis, the cultivated land quality in Yidu County, Hubei Province was evaluated with the aid of GIS and the fuzzy matter-element proximity cluster analysis model. The procedure of the evaluation goes: (1)Use the principal component analysis method to determine factors affecting cultivated land quality; (2)Extract correlatographs with the aid of ArcGIS vectorization, put them under spatial analysis and use the multi-map superimposition method to define evaluation units and extract unit attribute data; (3)Based on membership functions of the evaluation factors, calculate weight coefficients of the evaluation factors and proximity of the evaluation units with the fuzzy matter-element proximity cluster analysis model, and sort the cultivated lands into various quality levels. At the same time, 120 samples were collected randomly to verify veracity of the results. The results indicate that the cultivated land in this area is medium in quality and can sorted into 6 levels, accounting for 12.96%, 30.37%, 31.71%, 16.16%, 7.14% and 1.66%, respectively, which is roughly in accord with the actual situation. |
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| Keywords: | GIS The fuzzy matter-element proximity cluster Quality Cultivated land |
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