2.3.1. Statistical analysis
We used SPSS 19.0 (SPSS Inc. software products, Chicago, USA) to
distinguish differences in SWC among the tested landcover types. Before
the semivariance analysis, all data were tested for normal distribution
and distribution consistency across landcover types using One-Sample
Kolmogorov-Smirnov Test in SPSS; details and statistical parameters are
given in Table 2. The variability in SWC for each study plot or
landcover was described by the mean, standard deviation, minimum,
maximum, skewness and kurtosis. Regression analyses and graphs conducted
using OriginPro 9.0 (OriginLab, USA), and data preprocessing was
conducted in Microsoft Excel 2013.