羊草草原土壤微生物量磷的空间异质性分析

Spatial Heterogeneity of Soil Microbial Biomass Phosphorus in Leymus chinensis Community

本研究应用地统计学方法，分析了内蒙古锡林郭勒草原典型羊草群落土壤微生物量磷的空间分布格局.0-5cm土壤微生物量磷为16.54 mg/kg，5-10 cm土壤微生物量磷为12.77 mg/kg，这两层具有中等的空间相关性，呈现大的斑块分布，理论模型参数显示各变量空间变异主要受结构性因素的影响.10-20 cm土壤微生物量磷为9.75mg/kg，这层表现纯块金效应，土壤微生物量磷呈现均匀分布.

In this paper, we apply the geostatistics methods to analyze the spatial variability of soil microbial biomass phosphorus of inner Mongolia Leymus chinensis grass. The soil microbial biomass phosphorus is 16.54 at the depths of 0 5, and The soil microbial biomass phosphorus is 12.77 at the depths of 5 ~ 10. Both of them have moderate spatial autocorrelation. The parameters models show that the spatial variability of both soil microbial biomass phosphorus was mainly affected by structural factors. The soil microbial biomass phosphorus in 10 - 20 cm is 9.45, and it shows the pure nugget effect, The spatial distribution of soil microbial mass phosphorus show uniform.