基于GIS的云南省会泽县者海镇土壤中重金属插值方法

Interpolation Method of Heavy Metal on Zhehai Town Huize County Yunnan Based on GIS

以云南省会泽县者海镇土壤中重金属的含量与分布状况进行数据采集,采用ArcGIS中的地统计分析模块对土壤中重金属分布进行空间插值研究。运用反距离加权插值、多项式插值、径向基函数插值法和克里金插值对土壤中重金属的进行插值比较,发现当土壤中的重金属基本符合正态分布是Kriging插值效果较好,而当数据为非正态分布其它的方法能够更好对该地区重金属发布进行模拟。

Through acquisition data of heavy metal content and the distribution in the soil of Yunnan Province Huize County Zhehai Town,statistical analysis module in ArcGIS is used to conduct the spatial interpolation research of heavy metal distribution in the soil.Comparing the interpolation of heavy metal in the soil with the reverse distance weighting method,polynomial interpolation method,radial basis function method and Kriging method,it discovered that if heavy metal contain fit the normal distribution Kriging method can obtain a better simulate effect than other method,if it does not other methods will be better.