摘要
以黑河中游荒漠绿洲过渡带斑块植被区土壤为研究对象,运用地统计学,结合GIS对斑块植被区土壤有机质百分含量空间变异特征进行研究,并对土壤有机质百分含量空间变异函数模型进行拟合和空间插值分析.结果表明：土壤有机质含量的空间分布与地型以及植被的分布表现出很好的一致性,土壤有机质百分含量的变异系数随着土层深度的增加先增大后减小.0~60cm土层的土壤有机质百分含量空间变异理论模型为纯块金模型,60~120cm土层的土壤有机质百分含量空间变异理论模型为指数模型和球状模型.
The soil of patch vegetation region of desert-oasis ecotone in the middle reaches of Heihe River is taken as the research area to study the spatial variability of soil organic matter content in patch vegetation region by using the geo-statistics and GIS software. And the spatial variation function model of soil organic matter content is fitted and spatially interpolated. The result shows that the spatial distribution of soil organic matter content and geomorphic features,as well as the zonal distribution of vegetation have good consistency. The variation coefficients of soil organic matter content increase at first and then decrease with the increase of soil depth. The spatial vari- ation model of soil organic matter content in soil layer of 0～60 cm in depth is pure nugget model, and the spatial variation model of soil organic matter content in soil layer of 60～120 cm in depth is index model and spherical model.
出处
《兰州交通大学学报》
CAS
2016年第4期101-106,共6页
Journal of Lanzhou Jiaotong University
基金
国家自然科学基金(41161082
41561102)
