摘要
应用地统计学的半方差函数和克立格法,在仪征地区利用高程这一辅助变量把土壤pH和成土母质联系起来,分析了土壤pH的半方差和不同高程土壤pH的交互半方差特征,比较了土壤pH的Kriging和Cokriging估值。研究表明,预测值与实测值之间的相关系数协同克立格法比普通克立格法提高了39.00%,使估值的结果进一步精确。
In this study, the Semivariogram and Kriging methods were used to analyze the soft pH value, and then the elevation was made good use as auxiliary variable, which connected the soil pH with distribution of soil parent material. Semivariogram and cross-semivariogram of different elevation soft pH value were analyzed.As a result, compared with Kriging and Cokriging methods, it was shown that correlation inefficient between the prexdicted value and the observed value increased by 39.00% ,which could be used to improve the soil pH value in Yizheng area.
出处
《安徽农业科学》
CAS
北大核心
2007年第3期723-724,727,共3页
Journal of Anhui Agricultural Sciences
基金
项目资金中国科学院知识创新工程项目(KZCXZ-413-1-1)
作者简介
孙永健（1980-），男，山东烟台人。在读硕士，从事土壤养分信息管理研究。
