From: Development of monitoring and assessment of forest biomass and carbon storage in China
Tree species (groups) | Number of samples | Model | Aboveground biomass equation (1) | Belowground biomass equation (2) | Stem volume equation (3) | Biomass conversion factor model (4) | Root-to-shoot ratio model (5) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
a 0 | a 1 | a 2 | b 0 | b 1 | b 2 | c 0 | c 1 | c 2 | d 0 | d 1 | d 2 | e 0 | e 1 | e 2 | |||
Abies | 150 | One-variable | 0.15777 | 2.2674 | 0.01092 | 2.6672 | 0.13438 | 2.5198 | 1.1740 | −0.2524 | 0.0692 | 0.3998 | |||||
Two-variable | 0.15777 | 2.2674 | 0.0000 | 0.01484 | 2.9248 | −0.4191 | 0.08366 | 1.8997 | 0.8657 | 1.8859 | 0.3677 | −0.8657 | 0.0941 | 0.6574 | −0.4191 | ||
Picea | 451 | One-variable | 0.24686 | 2.1451 | 0.04371 | 2.2254 | 0.15021 | 2.4523 | 1.6435 | −0.3072 | 0.1770 | 0.0803 | |||||
Two-variable | 0.22121 | 2.0120 | 0.1925 | 0.05006 | 2.3902 | −0.2382 | 0.08042 | 1.6940 | 1.0960 | 2.7506 | 0.3180 | −0.9035 | 0.2263 | 0.3783 | −0.4306 | ||
Cunninghamia lanceolata | 303 | One-variable | 0.07629 | 2.3909 | 0.02533 | 2.2666 | 0.11013 | 2.5580 | 0.6927 | −0.1671 | 0.3320 | −0.1244 | |||||
Two-variable | 0.06326 | 2.0339 | 0.4745 | 0.02196 | 2.0339 | 0.3171 | 0.07416 | 1.8040 | 1.0022 | 0.8530 | 0.2300 | −0.5277 | 0.3471 | 0.0000 | −0.1574 | ||
Cupressus | 136 | One-variable | 0.22284 | 2.1986 | 0.08499 | 1.9766 | 0.15048 | 2.3080 | 1.4808 | −0.1094 | 0.3814 | −0.2219 | |||||
Two-variable | 0.19087 | 2.0064 | 0.3218 | 0.10163 | 2.1985 | −0.3715 | 0.10175 | 1.8225 | 0.8130 | 1.8759 | 0.1839 | −0.4913 | 0.5325 | 0.1920 | −0.6933 | ||
Larix | 300 | One-variable | 0.10555 | 2.3895 | 0.02215 | 2.5209 | 0.12464 | 2.5162 | 0.8468 | −0.1266 | 0.2098 | 0.1314 | |||||
Two-variable | 0.08243 | 2.0780 | 0.4412 | 0.01781 | 2.2464 | 0.3888 | 0.07098 | 1.8067 | 1.0050 | 1.1614 | 0.2714 | −0.5638 | 0.2161 | 0.1684 | −0.0524 | ||
Pinus massoniana | 302 | One-variable | 0.14221 | 2.3141 | 0.02268 | 2.3692 | 0.17234 | 2.4225 | 0.8252 | −0.1083 | 0.1595 | 0.0551 | |||||
Two-variable | 0.08982 | 1.9746 | 0.5470 | 0.02678 | 2.4916 | −0.1974 | 0.08215 | 1.8749 | 0.8821 | 1.0934 | 0.0997 | −0.3351 | 0.2982 | 0.5171 | −0.7444 | ||
Pinus yunnanensis | 150 | One-variable | 0.09492 | 2.3567 | 0.01654 | 2.3449 | 0.17251 | 2.3759 | 0.5502 | −0.0193 | 0.1743 | −0.0118 | |||||
Two-variable | 0.07023 | 2.1039 | 0.4112 | 0.01436 | 2.2264 | 0.1928 | 0.09653 | 1.8889 | 0.7924 | 0.7275 | 0.2151 | −0.3812 | 0.2045 | 0.1225 | −0.2184 | ||
Pinus tabulaeformis | 150 | One-variable | 0.12338 | 2.3460 | 0.02630 | 2.3666 | 0.15585 | 2.3885 | 0.7916 | −0.0425 | 0.2132 | 0.0206 | |||||
Two-variable | 0.10081 | 2.0712 | 0.4142 | 0.02627 | 2.3650 | 0.0024 | 0.11016 | 1.9165 | 0.7115 | 0.9151 | 0.1547 | −0.2972 | 0.2606 | 0.2938 | −0.4118 | ||
Pinus elliottii | 154 | One-variable | 0.08893 | 2.4234 | 0.06849 | 2.0813 | 0.14039 | 2.4275 | 0.6334 | −0.0041 | 0.7702 | −0.3421 | |||||
Two-variable | 0.06148 | 2.0342 | 0.6162 | 0.07425 | 2.1666 | −0.1350 | 0.08277 | 1.8701 | 0.8822 | 0.7428 | 0.1640 | −0.2661 | 1.2077 | 0.1324 | −0.7511 | ||
Quercus | 460 | One-variable | 0.14233 | 2.3798 | 0.07334 | 2.1410 | 0.11681 | 2.5073 | 1.2184 | −0.1275 | 0.5153 | −0.2388 | |||||
Two-variable | 0.09160 | 1.8578 | 0.7811 | 0.07328 | 2.1399 | 0.0017 | 0.06751 | 1.8578 | 0.9719 | 1.3569 | 0.0000 | −0.1908 | 0.8000 | 0.2821 | −0.7794 | ||
Betula | 450 | One-variable | 0.10130 | 2.4191 | 0.05549 | 2.1976 | 0.17682 | 2.3643 | 0.5729 | 0.0548 | 0.5478 | −0.2215 | |||||
Two-variable | 0.05992 | 2.0638 | 0.6032 | 0.05536 | 2.1961 | 0.0026 | 0.07971 | 1.8252 | 0.9153 | 0.7517 | 0.2386 | −0.3121 | 0.9240 | 0.1322 | −0.6005 | ||
Populus | 602 | One-variable | 0.08653 | 2.4685 | 0.02702 | 2.3420 | 0.15280 | 2.4447 | 0.5663 | 0.0239 | 0.3123 | −0.1265 | |||||
Two-variable | 0.07055 | 2.3333 | 0.2215 | 0.04079 | 2.6147 | −0.4465 | 0.07139 | 1.9406 | 0.8255 | 0.9882 | 0.3926 | −0.6040 | 0.5782 | 0.2814 | −0.6680 | ||
Schima superba | 150 | One-variable | 0.17922 | 2.2574 | 0.07816 | 2.1354 | 0.18518 | 2.3413 | 0.9678 | −0.0839 | 0.4361 | −0.1220 | |||||
Two-variable | 0.10504 | 1.9906 | 0.5209 | 0.06898 | 2.0730 | 0.1218 | 0.08043 | 1.9249 | 0.8132 | 1.3061 | 0.0658 | −0.2923 | 0.6567 | 0.0824 | −0.3991 |