森林类型forest type | 2018 | 2019 | 2020 | 2021 |
杉木林(CFF) | 28.47 | 29.34 | 29.99 | 30.77 |
松树林(PF) | 30.79 | 31.69 | 32.64 | 33.64 |
针叶混交林(CMF) | 37.96 | 39.11 | 40.24 | 41.38 |
针阔混交林(CBMF) | 42.42 | 43.72 | 43.54 | 44.79 |
阔叶混交林(BMF) | 49.06 | 50.17 | 51.21 | 52.27 |
平均值Mean | 37.74 | 38.81 | 39.52 | 40.57 |