| 苏南典型地区土壤颗粒的空间变异特征 |
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| 引用本文： | 刘付程,史学正,潘贤章,王洪杰. 苏南典型地区土壤颗粒的空间变异特征[J]. 土壤通报, 2003, 34(4): 246-249 |
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| 作者姓名： | 刘付程 史学正 潘贤章 王洪杰 |
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| 作者单位： | 中国科学院南京土壤研究所,江苏,南京,210008 |
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| 基金项目： | 国家重大基础研究规划项目资助(G1999011810)和中国科学院知识创新工程项目资助(KZCXZ-308) |
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| 摘 要： | 在地统计学和GIS的支持下,以半方差函数为基本工具,分析了苏南典型地区耕层土壤颗粒的空间变异特征,并运用块段普通克立格法(BlockKriging)进行最优无偏线性插值,制作了不同粒径土壤颗粒的空间分布图。结果表明,研究区域不同粒径土壤颗粒在较大的范围内存在着空间相关性,砂粒和粉砂的空间相关距离达到243km,粘粒也达到81km;不同粒径土壤颗粒由结构性因素引起的空间变异性达到70%以上,反映了土壤颗粒在研究区域内具有较强的空间自相关性。Kriging插值结果更直观地反映了研究区域土壤颗粒的空间变异特征。
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| 关 键 词： | 土壤颗粒 空间变异 地统计学 克立格插值 |
| 文章编号： | 0564-3945(2003)04-0246-04 |
| 修稿时间： | 2002-06-22 |
Characteristics of Spatial Variability of Soil Granules in a Typical Area of Southern Jiangsu Province |
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| LIU Fu-cheng,SHI Xue-zheng,PAN Xian-zhang,WANG Hong-jie. Characteristics of Spatial Variability of Soil Granules in a Typical Area of Southern Jiangsu Province[J]. Chinese Journal of Soil Science, 2003, 34(4): 246-249 |
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| Authors: | LIU Fu-cheng SHI Xue-zheng PAN Xian-zhang WANG Hong-jie |
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| Abstract: | A geostatistics method, with Geographic Information System (GIS), was applied to study the spatial variability of soil granules in a typical area of southern Jiangsu province. The results showed that the soil granules were auto-correlated in a relative large range, with the range of sand, slit and clay being 243,243 and 81km. And the ratio of Nugget to Sill of the different size granules varied from 0.155 to 0.305, indicating that the tested soil granules had relatively high spatial auto-correlation. The maps generated by Block Kriging also distinctly revealed the spatial variability of the soil granules. |
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| Keywords: | Soil granules Spatial variability Geostatistics Kriging |
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