摘要
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１５ｍ。Ｋｒｉｇｉｎｇ插值法可以较好地表达土壤水分含量的空间变异情况。
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
出处
《沈阳农业大学学报》
CAS
CSCD
1997年第3期200-204,共5页
Journal of Shenyang Agricultural University
关键词
土壤含水量
正态分布
空间变异
棕壤
沈阳地区
soil moisture content
normal distribution
sample capacity
spatial variability
brown earth
Shenyang region
