基于GWR模型的耕地表层土壤有机质空间变异研究——以山西省忻州市忻府区为例

Study on cultivated land surface soil organic matter spatial characteristics based on GWR model——A case study of Xinfu district

通过选择耕地土壤有机质含量影响因素,设定量化标准、构建地理加权回归(GWR)模型,对2006—2010年忻州市忻府区耕地土壤有机质含量进行了统计及空间可视化分析,探索了不同影响因素对忻府区耕地土壤有机质含量的影响及其空间差异性。发现距村距离、海拔、地面坡度、田面坡度、通常地下水位、pH值、全N、地势起伏度、总户数等对忻府区耕地土壤有机质含量影响显著。

This paper chose the influence factors of cultivated land soil organic matter content, and setting up the quantitative criteria for those factors, calculating the related resuhs with the revised data of soil organic matter content from 2006 to 2010 in Xinfu district using GWR model, conducting the spatial visualization analysis, exploring the effects of various factors on SOM. It is found that the multicenter effect of SOM emerges in Xinfu district. The distance to village, altitude, field surface slope, ground water level, pH, total nitrogen, terrain relief range total number of households affects the SOM content significantly.