| 河北沧州果品主产区土壤砷空间变异性研究 |
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| 引用本文： | 刘福顺,刘会玲,张毅功.河北沧州果品主产区土壤砷空间变异性研究[J].土壤通报,2011(6). |
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| 作者姓名： | 刘福顺 刘会玲 张毅功 |
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| 作者单位： | 河北农业大学资源与环境科学学院; |
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| 基金项目： | 国土资源部及农业厅河北省农业地质调查项目(200040007-3-5)资助 |
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| 摘 要： | 采用GIS技术和地统计学相结合的方法对河北沧州果品主产区献县、泊头、沧县3个县表层土壤(0～20 cm)砷的空间分异特征进行了分析。结果表明:3个县表层土壤砷的平均值为12.46 mg kg-1,砷污染存在的风险较低。土壤砷最优理论模型为指数模型,空间结构上具有中等程度空间相关性,说明其空间变异主要是由母质、地形、土壤类型等结构性因素引起的。各向异性分析表明地质背景、河流和飘尘可能影响着土壤砷的分布。Kriging插图结果直观的反映出研究区内土壤砷的空间变异特征。调查结果显示含砷污水的农田灌溉,含砷煤燃烧产生的大气降尘,含砷农药、化肥的使用等是影响土壤砷分布的人为因素。
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| 关 键 词： | 地统计学 土壤砷 空间变异 地理信息系统 |
Spatial Variability Analysis of Soil Arsenic in Major Fruit Producing Area of Cangzhou City Hebei Province |
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| LIU Fu-shun,LIU Hui-ling,ZHANG Yi-gong.Spatial Variability Analysis of Soil Arsenic in Major Fruit Producing Area of Cangzhou City Hebei Province[J].Chinese Journal of Soil Science,2011(6). |
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| Authors: | LIU Fu-shun LIU Hui-ling ZHANG Yi-gong |
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| Institution: | LIU Fu-shun,LIU Hui-ling,ZHANG Yi-gong(College of Resource and Environmental Science,Agricultural University of Hebei,Baoding 071001,China) |
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| Abstract: | Spatial variability of arsenic in the surface layer soil(0-20 cm) from major fruit production area in Xianxian,Botou and Cangxian is studied by using GIS technique and geostatistical analysis.The results show that the average content of soil arsenic is 12.46 mg kg-1 and the pollution risk of soil arsenic is low.The semivariogram of soil arsenic is well fitted by an exponential model.It is found that spatial heterogeneity of soil arsenic is moderate,because the spatial variability is primarily controlled by ... |
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| Keywords: | Geostatistics Soil arsenic Spatial variability GIS |
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