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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (14): 223-228.doi: 10.11924/j.issn.1000-6850.2012-0300

所属专题： 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

基于GIS的耕地地力模糊变权评价研究

刘畅 宋兆璞 宋立生 徐剑波   

  • 收稿日期:2012-02-06 修回日期:2012-02-21 出版日期:2012-05-15 发布日期:2012-05-15
  • 基金资助:

    广东省教育部产学研项目;广东省科技计划项目

GIS-based Cultivated Land Fertility with Fuzzy Variable Weight

  • Received:2012-02-06 Revised:2012-02-21 Online:2012-05-15 Published:2012-05-15

PDF (PC)

771

摘要：

引入基于均衡函数的变权理论对常权进行修正得到的变权，更能体现评价指标权重的真实性，使耕地地力的评价结果更具科学性。以高州市为研究试区，在GIS支持下，结合层次分析法和变权理论确定影响因子的最终权重，运用模糊综合评价法对耕地地力进行自动化、定量化评价，并分析其空间分布格局。结果表明，在该市58505.0278 hm2耕地中，一至八级地分别占总耕地的3.62%、18.27%、33.15%、26.96%、13.66%、3.29%、0.81%、0.24%，这一评价结果符合当地实际。该研究结果不仅直接应用于试区农业生产，而且为我国华南丘陵区开展耕地地力评价在方法上进行了有益探索。

关键词: 综合聚类分析, 综合聚类分析

Abstract:

The variable weight theory based on balanced function was introduced, in which the constant weights was modified to get the variable weights, which would embody evaluation index weights more authenticity, and make the results of the cultivated land fertility evaluation more scientific. Based on the geographic information system(GIS), this research adopts analytic hierarchy process and variable weight theory to identify the ultimate weight of several affected factors and introduces fuzzy comprehensive evaluation method to synthetically evaluate the cultivated land fertility of Gaozhou city automatically and quantitatively and also analyses its space distribution. The results suggest that 58505.0278hm2 cultivated land, the fertility of grade first to eighth account for 3.62%, 18.27%, 33.15%, 26.96%, 13.66%, 3.29%, 0.81% and 0.24%, respectively, which are in line with the local situation of the city. This result can not only be applied to Gaozhou agricultural production, but also contribute a beneficial exploration for carrying out studies about the evaluation of the cultivated land fertility of hilly regions of south China as well.

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