基于土壤剖面质地构型的土壤质量评价——以河南省封丘县为例
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江苏第二师范学院,中国科学院南京土壤研究所,苏州市国土资源局;苏州市国土资源局,郑州大学

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S159.9

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江苏第二师范学院“十二五”科研规划课题项目(311903)和中科院重大项目(No.KSCX1-YW-09-02)资助。


Evaluating Soil Quality with Texture Profile Configuration —A Case Study of Fenqiu, Henan
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College of Urban,Resource and Environmental Science,Jiangsu Second Normal University,Institute of Soil Science, Chinese Academy of Sciences,Suzhou National Territory Resources Bureau,Zhengzhou University

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    摘要:

    土壤剖面质地构型是土壤质量和土壤生产力的重要影响因子,对冲积平原地区来讲尤其重要。然而,现有的土壤质量评价研究中,很少采用该因子,且评价指标筛选大多缺乏明确的生物学意义。本研究利用河南省封丘县39个剖面数据及113个土钻样点数据,使用模糊C均值聚类方法 (FCM) 结合Kriging插值方法获取的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;在此基础上结合专家知识,针对平原地区旱作作物及耕地的耕性对土壤剖面质地构型的性状进行打分,以分值为参照,在ArcGIS 9.2中9个单一类别隶属度栅格文件进行栅格计算,获取了研究区土壤剖面质地构型栅格的综合分值。利用包括土壤剖面质地构型在内的多个土壤属性,结合作物产量数据,使用主成分分析(PCA)方法确定了最小数据集(MDS);应用指数和法,基于两种途径对土壤质量进行了评价,并结合测产获取的作物产量对两种评价结果进行了对比分析。结果表明:土壤质量指数与作物产量有较好的相关性,土壤质量评价结果能够较好地反映研究区的土壤质量状况。在添加剖面质地构型因子后,土壤质量评价结果有进一步的改善,可见在黄河泛滥冲积平原地区,剖面质地构型是土壤质量评价必不可少的因子。

    Abstract:

    Texture configuration of soil profile plays a great role for soil quality and soil productivity, especially in alluvial plain. However, this index was found seldom to be used in soil quality evaluation, and the selected factors for soil quality are mostly lack of explicit biological significance. In this study, 39 soil profiles and 113 soil auger samples were decided and soil samples were collected in Fenqiu county of Henan Province. 9 kinds of texture configuration of soil profiles were determined and their membership were obtained by using fuzzy C means clustering (FCM), the membership distribution map of the study area was edited with Kriging interpolation method. Based on expert knowledge, texture configuration was scored according to soil tilth and crop suitability. The comprehensive scores of texture configuration of soil profiles of the study area was edited in ArcGIS 9.2 platform. The minimum data set (MDS) was setup for soil quality evaluation by using principal component analysis (PCA) with the support of crop yield data and soil properties. Soil quality indexes (SQI) were calculated and compared by using MDS with or without texture configuration of soil profiles. The results showed this kind of assessment can disclose well soil quality in the study area, correlation was improved between SQI and crop yields when considering texture configuration of soil profiles. Thus, texture configuration of soil profiles is an essential indicator for soil quality evaluation in the alluvial plain and similar regions.

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引用本文

李开丽,檀满枝,密术晓,陈 杰.基于土壤剖面质地构型的土壤质量评价——以河南省封丘县为例[J].土壤,2016,48(6):1253-1260. LI Kaili, TAN Manzhi, MI Shuxiao, CHEN Jie. Evaluating Soil Quality with Texture Profile Configuration —A Case Study of Fenqiu, Henan[J]. Soils,2016,48(6):1253-1260

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历史
  • 收稿日期:2016-09-01
  • 最后修改日期:2016-09-09
  • 录用日期:2016-09-13
  • 在线发布日期: 2016-11-14
  • 出版日期: 2016-12-25