为解决季节性冻土水分在冻融过程中迁移复杂性及空间非均一性的定量化描述困难问题,以季节性冻土区土壤剖面水分为研究对象,运用地统计学的理论与方法对季节性冻土区不同时期土壤剖面水分的空间变异特征进行研究。结果表明,不同时期土壤剖面水分具有良好的空间结构及较强的空间相关性;季节冻融过程削弱土壤剖面水分的空间相关性,并且对土壤含水量具有强烈的空间重分布作用。地统计学理论与方法的应用可为季节性冻土区土壤冻融过程中水分运移机理的研究提供一种新的思路和方法。
For solving the difficult problems of quantitative description on migration complexity and spatial inhomogeneity of seasonal frozen soil moisture during frozen-thaw process, soil moisture profile of different stages in seasonal frozen soil region was taken as the research object and geostatistics was performed to study its spatial variability. The results indicated that soil profile moisture of different stages had good spatial structure and strong spatial correlation. Seasonal frozen-thaw process weakened the spatial correlation of soil profile moisture and had intense spatial redistribution effects on it. The application of geostatistics can provide a new thought and method for the research on soil moisture migration mechanism during frozen-thaw process in seasonal frozen soil region.
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