| 吕新,寇金梅,李宏伟.模糊评判方法在土壤肥力综合评价中的应用研究[J].干旱地区农业研究,2004,(3):56~59 |
| 模糊评判方法在土壤肥力综合评价中的应用研究 |
| Fuzzy integrative evaluation of soil fertility based on GIS |
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| DOI：10.7606/j.issn.1000-7601.2004.03.14 |
| 中文关键词: 模糊评判法 土壤肥力 综合评价 |
| 英文关键词:fuzzy evaluation soil fertility integrative evaluation |
| 基金项目:新疆兵团博士基金项目(2001-12) |
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| 摘要点击次数: 85 |
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| 中文摘要: |
| 利用GIS技术及层次分析法和模糊数学原理,选用7项评价指标对新疆干旱区农五师81团耕地进行土壤肥力的综合评价。根据作物效应曲线建立肥力指标的隶属度函数,并计算出隶属度值。采用层次分析法确定各指标的权重系数,进一步求得土壤肥力综合指标(IFI);然后进行综合评价,使评价结果能更好地为科学施肥服务。 |
| 英文摘要: |
| Based on the principle of hiberarchy analysis and fuzzy mathematics and the technique of GIS,the integrated evaluation of soil fertility was studied with five indexes, including organic mater, alkali-hydrolysis N, available P, available K and the quality of surface soil. The subjective grade value was calculated according to the S-type subjective grade function of crop effect, and the weight value of the fertility indexes was calculated by the method of hiberarchy analysis. Then the Integrative Fertility Index (IFI) was calculated. The evaluation results could be applied in scientific fertilization services. |
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