集对分析法在贵州麻尾土壤养分评价中的应用

Application of Set Pair Analysis Method in Soil Nutrient Evaluation in Mawei of Guizhou

为探究集对分析法在土壤养分评价中应用的可行性,基于贵州省独山县麻尾工业园区周边地区2017年64组表层土壤(0~20cm)样品的6种营养元素指标(有机质、全氮、全磷、全钾、碱解氮和有效磷)的测定,探究这6种营养元素的空间分布,并采用集对分析法对研究区土壤营养元素进行综合评价。结果表明:研究区土壤养分含量较低,空间上分布不均匀,其分布特征均表现为工业园区周边含量最低;集对分析法结果显示评价区内全磷、有效磷、全氮和碱解氮的空间分布与集对分析法计算结果比较相符,全钾和有机质部分地区的空间分布与集对分析法结果有差异。集对分析法为评价土壤养分含量提供了一种新思路。

The feasibility of using set pair analysis to evaluate soil nutrients was studied based on the measurements of six nutrient elements (organic matter, total nitrogen, total phosphorus, total potassium, Alkali -hydrolyzed Nitrogen and effective phosphorus) for sixty -four groups of surface soil samples (0~20 cm) in the surrounding areas of Mawei Industrial Park in Dushan County of Guizhou Province in 2017. The spatial distribution characteristics of the six nutrient elements were analyzed. The soil nutrient elements in the studied area were then assessed using set pair analysis. The results show that the soil nutrient content is low in the studied area and the spatial distribution is uneven, with the characteristics of the soil nutrient content at its lowest in the surrounding area of the industrial park. The spatial distribution of total phosphorus, effective phosphorus, total nitrogen and Alkali -hydrolyzed Nitrogen in evaluation area accords with the distribution found using set pair analysis. There is a difference between the spatial distribution of the total potassium and organic matter in part of the area and the distribution found using set pair analysis. Set pair analysis is a new method to evaluate soil nutrient content.