Fig 1.
Location and elevation of Changting County, Fujian.
Fig 2.
Sample design and distribution of sampling sites in Changting County.
Table 1.
Descriptive statistics of SOC and STN in topsoil.
Fig 3.
Semivariogram (dots) and fitted models (lines) of SOC and STN.
Table 2.
Parameters for the SOC and STN semivariogram models.
Fig 4.
Spatial distribution maps of SOC and STN.
Table 3.
Areas and percentages of soil organic carbon (SOC) and total nitrogen (STN) by different classes in Changting County.
Fig 5.
Regression analyses between SOC, STN, and elevation using scatter plots.
Table 4.
Comparison of the means of topsoil SOC and STN concentrations of different elevation groups.
Table 5.
Bivariate correlations between the studied variables.
Fig 6.
Regression analysis between the SOC, STN and slope using scatter plots.
Table 6.
Comparison of the mean topsoil SOC and STN concentrations of different slope groups.
Fig 7.
Comparison of SOC and STN concentrations among four slope aspects.
Table 7.
Statistical results of the topsoil SOC and STN concentrations under different land use types.