摘要
以中科院禹城综合试验站 10 2m× 5 2m空间的农田土壤表层入渗试验为基础 ,通过对实测数据的统计分析得到Horton入渗经验公式中的指数 β遵从对数正态分布。应用地质统计方法对参数 β 的空间相关性进行了分析 ,结果表明该地块的 β在空间一定范围内具有空间相关性 ,其相关尺度南北方向大于东西方向 ;
Based on the topsoil infiltration tests on farmland of 102 m×52 m in the Yucheng Comprehensive Experiment Station, the statistical analysis of the observed data indicates that the infiltration index β of the Horton Infiltration Formula follows logarithm distribution. Geologic statistics method is applied to analyze the spatial correlation of the index β, and the result shows that the index β is of spatial correlation in a certain distance; its correlation distance in S-N direction is larger than that in E-W direction; and the infiltration capacity of the land studied is heterogeneous in different direction.
出处
《中国农村水利水电》
北大核心
2004年第11期11-13,共3页
China Rural Water and Hydropower
基金
中国科学院禹城综合试验站开放基金课题 (2 0 0 2 0 6)
关键词
入渗指数
地质统计分析
空间相关性
各向异性
infiltration index
geologic statistics analysis
spatial correlation
heterogeneous in different direction
