浙江温岭海涂围垦区土壤盐分空间异质性分析  

The Spatial Heterogeneity Analysis of Soil Salinity at Coastal Reclamation Area in Wenling

作　　者：冉雯瑞[1] 蔡永立[1] 何斌[1] 谢长坤[1] 赵小雷[1] 

机构地区：[1]华东师范大学,上海市城市化生态过程与生态恢复重点实验室,资源与环境科学学院地理系,上海200241

出　　处：《土壤通报》2013年第4期839-843,共5页Chinese Journal of Soil Science

基　　金：上海市重大科技攻关项目(11dz1211402)资助

摘　　要：运用经典统计学和地统计学相结合的方法,研究浙江温岭海涂围垦区在3种取样尺度下(1800 m×800 m、600 m×420 m和300 m×300 m)土壤盐分的空间变异性。结果表明:3种取样尺度下土壤盐分服从对数正态分布,属中等变异强度;半方差函数模型均符合指数模型,具有强的空间自相关性。Moran′sⅠ系数表明小尺度(S)下土壤盐分的空间相关性较弱,而中(M)和大尺度(L)下则较高。Kriging插值与相关性分析能直观的表现研究区内土壤盐分含量的空间分布状况和变化情况。通过海涂围垦区3种取样尺度下的空间异质性的分析,揭示出土壤盐分的空间变化规律,为围垦区盐渍化分区管理与改良利用提供了理论基础和实践依据。Based on a combinat ion of classical statistics and geostatistics method, this thesis studied spatial heterogeneity of soil salinity in coastal reclamation area in Wenling, Zhejiang Province at three different scales （1800m×800m、600m×420m and 300m×300m）. The study results indicated that the soil salinity at three different scales was lognormal distribution and exhibited moderate spatial variability. Semi-variance was in line with exponential model, with strong spatial correlation. Moran＇s I coefficient showed that spatial correlation of soil salinity at the small scale （S） was weak, while spatial correlation of soil salinity at the middle （M） and Large scale （L） were comparatively high. Kriging interpolation and correlation analysis accurately showed the spatial distribution and the variance tendency. On the basis of this analysis, this thesis aimed to find out the spatial variability law of soil salinity and provide the theoretical basis and practical experience for the management, improvement and utilization of the salinized coastal reclamation area.

关 键 词：海涂 围垦区 土壤盐分 空间异质性 温岭 

分 类 号：S159.2[农业科学—土壤学]