Since the method of spatial analysis was introduced, the research on spatial variability and dependence has been an academic focus.

自空间分析方法被提出以来，土壤空间变异性和相依性的研究一直是学术界共同关注的热点。

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Spatial scale is forefront in soil-scientific research, so the analysis of macropore reasonable sampling size becomes significant which is in case of taking account of spatial variability.

土壤特性的空间尺度问题是当今土壤科学研究的前沿，在进行土壤空间变异研究中，大孔隙的合理取样尺度分析对大孔隙流研究具有十分重要意义。

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