模糊集理论在土壤剖面质地构型中的应用——以河南省封丘冲积平原区土壤为例
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国家自然科学基金项目(面上项目,重点项目,重大项目)


Application of fuzzy set theory to soil profile texture configuration-A case study of soils in the alluvial plain of Fengqiu County
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    摘要:

    封丘县是典型的黄河中下游冲积平原区,不同层次土壤质地类型、厚度及其在剖面中的组合,是影响土壤水肥贮存与供给能力的重要因素。本研究通过39个土壤剖面和113个土钻样点的野外调查获取第一手资料。根据层次质地类型与其在剖面中出现位置两个基本特征定义特征质地层,在研究区最终确立了9种特征质地层。以特征质地层在已观测土壤剖面和土钻样本中出现缺失特征以及厚度参数为基础数据,应用模糊c-均值算法模型,研究区观测土壤被自动划分为9种特征质地层组合类别,亦称为土壤剖面质地构型。结合普通克里格空间预测方法,实现了9种土壤剖面质地构型在空间上分布的单一类别隶属度图和去模糊化图。剖面不同质地层次在垂直方向的组合特征以及不同土壤剖面质地构型在水平方向上的分布规律,为区域耕地质量评价、生产潜力评估以及改良、利用实践提供了更加客观、丰富的基础信息。

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    Fengqiu County is a typical alluvial plain area that lays the middle and lower of the Yellow River. Different texture layer type, thickness and its combination in soil profile, which are important factors affect soil water and fertilizer storage and supply capacity. Through the field survey of 39 soil profiles and 113 soil samples drilled to get the first hand data. Based on two basic features of layer texture types and their position in the profile to define characteristic texture layer, in the study area nine kinds of characteristic texture layers have been established. Nine kinds of characteristics texture layers combinations have been divided automatically by applying the fuzzy c-means algorithm model through taking the missing features and the thickness of the characteristic texture layers as the basis of data, which have been observed in the soil profile and soil drilled samples in the study area. Combined with statistical methods, it is to achieve the spatial distribution of nine typical soil texture combinations by the single category membership map and the maximum membership map. They revealed the combination characteristics of different texture layers in the vertical direction and the distribution of different texture profile configuration in the horizontal direction,which provided more objective and a wealth of basic information for regional land quality evaluation, and assessment of potential productivity, and improved utilization practice of soil.

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檀满枝,密术晓,李开丽,史学正,陈杰.模糊集理论在土壤剖面质地构型中的应用——以河南省封丘冲积平原区土壤为例[J].土壤学报,2011,48(2):221-229. DOI:10.11766/trxb200911190520 tan manzhi. Application of fuzzy set theory to soil profile texture configuration-A case study of soils in the alluvial plain of Fengqiu County[J]. Acta Pedologica Sinica,2011,48(2):221-229.

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  • 收稿日期:2009-11-19
  • 最后修改日期:2010-05-20
  • 录用日期:2010-06-30
  • 在线发布日期: 2010-10-19
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