| 黑龙江省巴彦县土壤养分空间变异规律与格局分析 |
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| 引用本文： | 刘欣,王红梅,廖丽君.黑龙江省巴彦县土壤养分空间变异规律与格局分析[J].土壤通报,2011(1):86-90. |
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| 作者姓名： | 刘欣 王红梅 廖丽君 |
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| 作者单位： | 东北农业大学资源与环境学院;华南农业大学公共管理学院; |
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| 基金项目： | 东北农业大学寒地黑土资源保护利用创新团队项目资助(CXT003); 广东省高等学校人才引进科研资助(粤教师200886)资助 |
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| 摘 要： | 本文在349个采集土壤表层(0～20cm)样本分析基础上,运用地统计学与GIS相结合的方法,研究了黑龙江省巴彦县典型区域土壤有机质、速效磷、速效钾、pH值的空间变异特征,并结合巴彦县实际情况分析了这四种养分的影响因素。研究结果表明:土壤有机质、速效钾、pH值的变异函数曲线符合指数模型,土壤速效磷的理论模型符合有基台的线性模型;在空间结构上,土壤有机质、速效钾、pH值空间自相关性中等,土壤速效磷量表现强弱的空间自相关性;采用Kriging插值方法,分析研究区域的土壤养分空间格局分布可以看出,四种土壤养分的空间分布具有较明显的地域性,速效磷与速效钾以中部为最低,并向四周呈波状扩展增加,土壤有机质、pH值的分布则较为随机。
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| 关 键 词： | 土壤养分 空间变异 地统计学 半方差函数 空间插值 |
Spatial Variability and Pattern Analysis of Soil Nutrients in Bayan of Heilongjiang Province |
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| LIU Xin,WANG Hong-mei ,LIAO Li-jun.Spatial Variability and Pattern Analysis of Soil Nutrients in Bayan of Heilongjiang Province[J].Chinese Journal of Soil Science,2011(1):86-90. |
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| Authors: | LIU Xin WANG Hong-mei LIAO Li-jun |
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| Institution: | LIU Xin1,WANG Hong-mei 2,LIAO Li-jun1(1.College of Resources and Environment,Northeast Agricultural University,Harbin 150030,China,2.College of Public Management,South China Agricultural University,Guangzhou 510642,China) |
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| Abstract: | The spatial variation of soil nutrients,including organic matter(OM),available P(AP),available K(AK) and pH value and its influencing factors was studied in Bayan,Heilongjiang Province of China,with the aid of both Geo-statistics and GIS.The samples of 349 top soil(0-20 cm) were collected in this area.The results indicated that the semi-variograms of soil OM,AK and pH value were best described by exponential model.AP were best described by linear with sill model.Those soil properties had different spatial c... |
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| Keywords: | Soil nutrients Spatial variability Geo-statistics Semi-variograms Spatial interpolation |
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