水土保持通报2012，Vol.32Issue(4)：180-184,5.
基于地统计学的河南省封丘县土壤养分空间变异研究
Geostatistics-based Spatial Variability of Soil Nutrients in Fengqiu County of He＇nan Province
摘要
Abstract
With Fengqiu County of He＇nan Province as the study area, we use ArcGIS 9.2 statistical analysis module（geostatistical analysis） to investigate the spatial variability of soil nutrients. The results show that each of the nutrients in 0--20 cm soil showed a normal distribution and moderate-intensity variation. Specif- ically, soil organic matter had the highest coefficient of variation of 0.665 6, ammonium nitrogen had 0. 411 6, and potassium（K） had 0. 321 3, respectively. Space structural analysis showed that the exponential model fitted best for the distribution of ammonium nitrogen, and the spherical model for K, and the Gaussian model for organic matter. Using ordinary Kriging interpolation, the spatial distribution of organic matter and am- monium nitrogen exhibited banded patterns, while K showed a patchy pattern. The spatial distribution of or- ganic matter was higher along the middle zone along the direction of northeast--southwest, K had higher val- ues in northern central area and lower values in southeast, and ammonium nitrogen was higher in northwest and lower in southeast.关键词
地统计学/空间变异/土壤养分/河南省封丘县Key words
geostatistical analysis/spatial variability/soil nutrients/Fengqiu County of He'nan Province分类
农业科技引用本文复制引用
肖燕,吕喜军..基于地统计学的河南省封丘县土壤养分空间变异研究[J].水土保持通报,2012,32(4):180-184,5.基金项目
山东自然科学基金项目（ZR2009EL001 （）
ZR2011DQ015） （）
