Table 8 Linear models showing relationships between carbon density (CD, Mg ha⁻¹) or biomass carbon density (Biomass CD, Mg ha⁻¹) and annual precipitation (Pre, mm), annual mean temperature (Tem, °C), stand age (Age, years), and stand density (DE, stems ha⁻¹) for natural, planted, and all forests

Natural forests

CD = − 160.65 − 13.836 Tem + 0.318 DE + 0.762 Pre + 0.566 Age

(1)

0.636

< 0.0001

342

Planted forests

CD = − 222.26 + 0.768 Pre + 0.208 DE + 0.614 Age

(2)

0.513

< 0.0001

195

All forests

CD = − 133.209 − 7.918 Tem + 0.688 Pre + 0.194 DE + 0.264 Age

(3)

0.516

< 0.0001

537

Natural forests

Biomass CD = − 47.14 + 0.530 Age − 4.265 Tem + 0.198 DE + 0.151 Pre

(4)

0.664

< 0.0001

342

Planted forests

Biomass CD = − 37.99 + 0.163 DE − 1.389 Tem + 0.123 Pre + 0.246 Age

(5)

0.639

< 0.0001

195

All forests

Biomass CD = − 44.85 + 0.423 Age + 0.154 DE − 2.846 Tem + 0.149 Pre

(6)

0.672

< 0.0001

537