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地理科学  2011 

BIO-NORM与EO耕地质量评价方法对比研究

, PP. 1012-1018

Keywords: 耕地质量评价,专家经验法,Norm值,水稻产量,土壤质量

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Abstract:

以江西省余江县为研究区域,利用专家经验法(expertopinion,EO)和新建的Bio-Norm法,分别确定耕地质量评价指标、指标权重和隶属度函数,对研究区水田耕地质量进行评价。两种评价方法的对比分析表明,采用EO法时不同专家组选取的参评指标不尽相同,评价结果具有不稳定性。Bio-Norm法得出的指标权重及确定的隶属度函数临界值,比起EO法更能反映水稻生长的实际要求;耕地质量综合指数(IFI值)与水稻产量回归方程的决定系数(R2)高于EO法,且IFI值与水稻产量各等级区域分布特征更吻合。采用Bio-Norm法评价耕地质量更为科学合理。

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