西南林业大学学报2012，Vol.32Issue(1)：41-45,5.DOI:10.3969/j.issn.2095-1914.2012.01.009
农田土壤养分交换性镁的空间分布模拟方法比较——以昭阳区为例
Comparison of Spatial Distribution Simulation Methods for Exchangeable Mg Nutrient in the Farmland Soil——A Case Study of Zhaoyang District
摘要
Abstract
Based on the soil nutrient sample data collected in Zhaoyang District of Zhaotong Municipality, the content of exchangeable magnesium (Mg) of the whole district was simulated by means of the Inverse Distance Weighted (IDW) , Radial Basis Function Interpolation, the Ordinary Kring and the Regression Modeling methods. It was indicated by the study that the forecasting accuracy of different simulation methods varied because of the distribution complexity of the intermediate elements. The Inverse Distance Weighted method emphasized the impact of the weight of spatial distance, it could not represent the distribution rule of Mg element very well. Forecast of the Radial Basis Function Interpolation method was not ideal either due to the great uncertainty of the data collected from the sampling points in the study area. The accuracy of the Kriging method was the highest with the least error. The Regression Modeling method created the relatively greater error in the forecast, however it could best reflect the regional characteristic and the vertical change feature of the spatial distribution of exchangeable Mg.关键词
农田土壤养分/交换性镁/反距离加权法/径向基函数插值法/克里格法/回归模型法Key words
farmland soil nutrient/ exchangeable Mg/ IDW/ Radial Basis Function Interpolation/ Kring method/ Regression Modeling method分类
农业科技引用本文复制引用
朱大运,陈婷,周汝良..农田土壤养分交换性镁的空间分布模拟方法比较——以昭阳区为例[J].西南林业大学学报,2012,32(1):41-45,5.基金项目
国家科技支撑计划项目(2008BAD95B09)资助. （2008BAD95B09）
