雷州半岛桉树林地土壤肥力综合评价  

Soil Fertility Integrated Evaluation of Eucalypt Plantation in Leizhou Peninsula

作　　者：李孔生 周保彪 陈马兴 简明 

机构地区：[1]中国林业集团国营雷州林业局,广东遂溪524348 [2]湛江市林业良种繁育场,广东湛江524300

出　　处：《桉树科技》2014年第4期27-31,共5页Eucalypt Science & Technology

摘　　要：利用相关分析和模糊数学原理，建立土壤肥力的综合评价体系。根据作物效应曲线，对雷州半岛桉树林地12项肥力指标建立隶属度函数，并依据各指标的相关系数确定各指标的权重，求得土壤肥力综合指标（IFI）。结果表明：土壤肥力综合指标值IFI主要分布在0.2~0.4之间，平均值为0.27，土壤肥力总体处于四级低等水平。A comprehensive soil fertility evaluation system was developed usingcorrelation analyses and fuzzy mathematics.From the crop-effect curves obtained,12 soil indices were found to be important for defining the fertility ofEucalyptusplantations in Leizhou Peninsula. Correlation coefficients of each index were used to determine weights for each of these 12 indicators in formulating an Integrated Soil Fertility Index （IFI） function.The results showed thatvalues of thisIFIon the Leizhou peninsular were distributed mainly inthe range of 0.2-0.4,withthe average value being 0.27.Overall, soil fertility in the region is considered to be of a low level and categorized as grade4.

关 键 词：土壤肥力 综合评价 模糊数学 隶属度 

分 类 号：S714.8[农业科学—林学]