Table 7. Carbon stock of Cryptomeria japonica and Chamaecyparis obtusa for two versions (mean ± standard error).

Forest stand Category ver.1(tC/ha) ver.2(tC/ha) t value p value
Cryptomeria japonica 6th NFI 78.03 ± 0.60 93.68 ± 0.73 14.67 <0.001
7th NFI 90.11 ± 0.65 108.39 ± 0.79 15.71 <0.001
Chamaecyparis obtusa 6th NFI 62.28 ± 0.76 73.39 ± 0.87 12.03 <0.001
7th NFI 84.54 ± 0.83 98.59 ± 0.94 15.05 <0.001