摘要
如何利用有限的土壤采样点准确预测土壤属性一直是研究的热点。基于河北省全国第二次土壤普查数据,运用方差分析研究了使用土地利用和克里格插值来表征区域表层土壤有机碳空间分布的可行性。结果表明:土地利用是表层土壤有机碳密度空间分异的一个影响因子,可以直接使用土地利用来反映表层土壤有机碳密度在空间上的分布和变化。但单一的土地利用对土壤有机碳密度空间分异的反映能力还不是很高,而土地利用与普通克里格插值结合以后能显著地提高对土壤有机碳空间分异的解释水平。因此区域空间上可以将土地利用与普通克里格插值结合来表征表层土壤有机碳密度的空间分布。
How to use limited soil samplings to predicate an accurate spatial distribution of soil properties is always a hot issue. Method of using land use and Kriging to indicate soil organic carbon spatial distribution was explored by variance analysis with the data of Hebei Province of the Second National Soil Survey. The results showed that land use was a factor impacting soil organic carbon spatial variation and could be used to reflect the spatial distribution of soil organic carbon. But the independent reflecting ability of land use to variation of SOC density in the surface was not very high, land use and ordinary Kriging interpolation in com- bination could significantly increase explanatory strength of SOC spatial variation. Therefore, Kriging inter- polation could be combined with land use to indicate the spatial distribution of regional soil organic carbon in the topsoil.
出处
《水土保持研究》
CSCD
北大核心
2014年第2期39-42,46,共5页
Research of Soil and Water Conservation
基金
中国科学院战略性先导科技专项项日(XDAO5050509)
国家重点基础研究发展规划(973计划)项目(2010CB950702)
