土壤碳储量计算中不同插值方法对比研究——以吉林省大安市为例

土壤碳储量问题是大气温室效应和全球变化研究的热点问题.本文采用“单位土壤碳量”方法,计算了吉林省大安市表层土壤有机碳总储量和平均土壤有机碳储量,以为全球碳循环研究提供精确的基础数据.分析和比较了反距离加权、全局多项式、局部多项式、径向基函数和普通克里格等不同插值模型对表层单位土壤有机碳储量空间插值结果的影响,结果表明全...

Contrastive studies on different interpolation methods in soil carbon storage calculation in Da＇ an City, Jilin Province

Soil carbon storage is the focus in the studies on greenhouse effect and global change. Total organic carbon storage and average organic carbon storage in surface soil are calculated by means of Unit Soil Carbon Storage in this study. Different interpolation models such as Inverse Distance Weighted, Global Polynomial Interpolation, Local Polynomial Interpolation, Radial Basis Function and Kringing are analyzed and compared. The interpolation results show that mean error, average absolute error and root mean standard error are the minimum when using the GPI, the RBF and the Kringing models respectively. The quadratic equation model of original Kringing achieves the highest accuracy.