Table 7 Estimated parameters of the semivariogram for forest carbon density in the three sub-regions
From: Similar carbon density of natural and planted forests in the Lüliang Mountains, China
Sub-region | Model | Nugget (C0) | Sill (C0 + C) | Nugget effect C0/(C0 + C) | Range (km) | RSS | R 2 |
|---|---|---|---|---|---|---|---|
West | Sph | 1.24 | 2.53 | 0.490 | 130.9 | 0.471 | 0.820 |
Central | Exp | 0.61 | 4.88 | 0.125 | 30.3 | 0.971 | 0.464 |
East | Sph | 0.48 | 4.50 | 0.107 | 37.2 | 17.50 | 0.241 |