土壤经验入渗指数的移动窗口统计特性

Statistic Characteristics of Moving Window of Soil Experiential Infiltration Index

以中国科学院禹城综合试验站的试验田为研究对象,采用移动窗口统计的原理与方法,计算各"窗口"的入渗指数的统计参数。根据这些统计参数初步分析土壤经验入渗指数的空间分布特征、局部异常现象和移动"窗口"的某些统计特性。结果表明:1该区土壤经验入渗指数在空间上表现为非均质与各向异性;2在同一条件下,尺寸不同的"窗口",其统计结果存在明显差异;3在"窗口"尺寸相同的情况下,"窗口"的不同取法也会造成结果的差异。

The article is taken the test field of Yucheng comprehensive Experimental station of Chinese Academy of Science as the study object. The theory and method of moving window statistics is applied to calculate the statistical parameter for infiltration index of each window. According to these statistical parameters, elementarily analyze the spatial distribution characteristics of soil infiltration index and partial abnormal phenomenon together with some statistical features of moving windows, the results show that: 1) the soil infiltration index of this area is non-homogeneity and anisotropy in space. 2) Under the same conditions, the different dimension windows exist obvious differences for the statistic results. 3) For same dimension windows, the different adopt of windows also result in some differences.