MA Cheng-xia,DING Jian-li,WANG Lu,et al.Research for Interpolation Method of Spatial Variation Analysis on Soil Salinity in the Oasis[J].Research of Soil and Water Conservation,2014,21(04):317-320.
绿洲土壤表层含盐量空间变异分析的插值方法研究
- Title:
- Research for Interpolation Method of Spatial Variation Analysis on Soil Salinity in the Oasis
- Keywords:
- geostatistic; spatial variation; spatial interpolation; soil salinity
- 分类号:
- S153.1
- 摘要:
- 为了比较土壤表层含盐量空间变异性研究的各种空间插值方法的优劣，以渭库绿洲为例，运用基于ArcGIS的4种空间插值方法（反距离加权、样条函数、克里格、协同克里格空间插值方法），分析了土壤表层含盐量的空间变异性。并通过分析各个交叉检验统计量来验证评估数据的误差，从而选取最优的空间插值方法。结果表明：4种插值方法的插值结果基本能反映含盐量的空间分布特征，简单克里格法更适合绿洲表层土壤含盐量的空间插值；通过空间插值可以发现表层土壤含盐量呈现出东南高、西北低的态势。对渭库绿洲土壤盐分空间分布特征及空间变异进行了解，有利于土壤盐渍化的快速诊断，是盐渍化土壤治理和改良的重要基础。
- Abstract:
- In order to compare the advantages and disadvantages of the spatial interpolation methods of the soil salinity spatial variation, a case study of Weiku, Oasis using four spatial interpolation methods based on ArcGIS(inverse distance weighting, spline function, Kriging, collaborative Kriging interpolation method) analyze the spatial variation of soil salt content. The best spatial interpolation method is selected through the analysis of various cross test statistic to verify the error of the evaluation data. Results show that four kinds of interpolation methods of interpolation results can reflect the spatial distribution characteristics of salt content. Simple kriging method is more suitable for the oasis surface soil salinity of spatial interpolation; Through spatial interpolation can be found that the surface soil salinity shows a tendency of high southeast, northwest low. Understanding spatial distribution of salinization is not only the benefit for rapid diagnosis of soil salinization, but also has scientific significance for management and amelioration of soil salinization.
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备注/Memo
收稿日期:2013-11-02;改回日期:2013-12-03。
基金项目:国家自然科学基金项目（41261090，41161063，41130531）；霍英东教育基金项目（121018）；教育部新世纪优秀人才支持计划（NCET-12-1075）
作者简介:马成霞(1986-),女,青海大通回族土族自治县人,硕士生,主要从事干旱区资源遥感研究。E-mail:470292318@qq.com
通讯作者:丁建丽(1974-),男,山东菏泽人,博士,教授,博士生导师,主要从事干旱区生态环境效应研究。E-mail:watarid@xju.edu.cn