| Forest name | Scientific name | Common name | Biomass (tAGB/ha) | Carbon stock (tC/ha) | % of total trees biomass stocks |
| JCBNP | Calophyllum inophyllum | Mtondoo | 694 | 340 | 31 |
| Vitex doniana | Mfuu | 472 | 231 | 21 | |
| Elaeis guineensis | Mchikichi | 348 | 170 | 16 | |
| Pandanus rabaiensis | Msariaka | 182 | 89 | 8 | |
| Ficus lutea | Mlangawa | 119 | 58 | 5 | |
| Others | Various | 398 | 195 | 18 | |
| Ngezi | Bombax rhodognaphala | Msufi mwitu | 1099 | 538 | 18 |
| Antiaris toxicaria | Mgulele | 703 | 345 | 11 | |
| Quassia undulata | Mjoho | 626 | 306 | 10 | |
| Mangifera indica | Muembe | 476 | 233 | 7 | |
| Erythrophleum suavoelens | Mwavi/Mbaraka | 309.9 | 151.8 | 6 | |
| Remaining | Various | 2966.7 | 1452.7 | 48 | |
| Pugu | Hymenocardia ulmoides | Mtete | 90.9 | 44.5 | 25 |
| Dialium holstii | Mtebeti | 66.2 | 32.4 | 18 | |
| Ozorioa insigns | Mgomba kilango | 26.4 | 12.9 | 7 | |
| Bersama abyssinica | Mpopoma | 24.5 | 12 | 7 | |
| Diospyros sp. | Mnaki | 17.7 | 8.7 | 5 | |
| remaining | Various | 138.3 | 67.7 | 38 | |
| Kazimuzumbwi | Pteleopsis myrtifolia | Mgovu | 20 | 9.8 | 18 |
| Bersama abyssinica | Mpopoma | 19.8 | 9.7 | 18 | |
| Rourea orientalis | Mhimbo | 18.4 | 9 | 17 | |
| Senna siamea | Mkenge maji | 7.1 | 3.4 | 7 | |
| Afzelia quazensis | Mkongo | 6.1 | 3 | 6 | |
| Remaining | Various | 36.8 | 17.9 | 34 |