| 小尺度下土壤重金属铬含量的空间插值方法比较研究 |
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| 引用本文： | 凌辉,武伟,王润,刘洪斌. 小尺度下土壤重金属铬含量的空间插值方法比较研究[J]. 西南大学学报(自然科学版), 2007, 29(11): 93-99 |
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| 作者姓名： | 凌辉 武伟 王润 刘洪斌 |
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| 作者单位： | [1]西南大学资源环境学院,重庆400716 [2]西南大学计算机与信息科学学院,重庆400716 [3]重庆市科学技术信息中心,401147 |
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| 基金项目： | 重庆市科委攻关资助项目（2006AB1015）. |
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| 摘 要： | 以重庆市江津区吴滩镇为例，在小尺度下分别应用普通克立格法、简单克立格法、泛克立格法、析取克立格法和距离反比权重法等5种插值方法对土壤重金属铬进行了空间变异特征的研究．综合比较了各种插值方法的预测误差、统计特征值及插值分布图，结果表明二阶趋势的普通克立格法插值效果最能准确反映出土壤中铬的空间分布，而距离反比权重法效果最差．
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| 关 键 词： | 土壤重金属 地统计学 空间插值 |
| 文章编号： | 1673-9868（2007）11-0093-07 |
| 收稿时间： | 2007-04-20 |
A Comparative Analysis of Various Spatial Interpolation Methods for Soil Chrome Content on a Small Scale |
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| LING Hui, WU Wei, WANG Run, LIU Hong-bin. A Comparative Analysis of Various Spatial Interpolation Methods for Soil Chrome Content on a Small Scale[J]. Journal of southwest university (Natural science edition), 2007, 29(11): 93-99 |
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| Authors: | LING Hui WU Wei WANG Run LIU Hong-bin |
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| Abstract: | Five spatial interpolation methods, i.e. Ordinary Kriging, simple Kriging, universal Kriging, disjunctive Kriging and inverse distance weighting, were compared on a small scale, in Wutan Town of Jiangjin city. These techniques were applied to investigate the spatial patterns of soil Cr. The results showed that the second-order trend ordinary Kriging method could accurately reflect the spatial patterns of Cr based on predict error, statistical feature values and spatial distribution maps of interpolation. |
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| Keywords: | soil heavy metal geostatistics spatial interpolation |
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