沈阳地区棕壤含水量空间变异规律的研究

本文对沈阳地区棕壤农田深度为２０ｃｍ的土壤含水量的空间变异规律进行了研究，结果表明该土壤的含水量测定值呈对数正态分布或正态分布，且其变异性较小，当置信水平为９５％、测量精度为平均值的５％时，样本容量Ｎ≥６；半方差分析结果表明，该农田土壤含水量的相关域约为１５ｍ。Ｋｒｉｇｉｎｇ插值法可以较好地表达土壤水分含量的空间变异情况。

Studies on Water Spatial Variability in Brown Earth in Shenyang Region

The results from the research showed that,the values of soil content moisture in the depth of 20cm demonstrated either alogarithmic mormal distribution or normal distribution,with a relatively minor variability When the confidence level was 95% and the average accuracy of measurement was 5%,the sample capacity could be six or more The results of semivariance analysis showed that the correlation scope was 1 5 meter in the investigating farmland soil Also the experiment indicated that Kriging interpolation could bebetter served as a mehtod to describe the spatial variability of soilmoisture content