河南森林生物量与生产力研究

Study on Forest Biomass and Productivity in Henan

利用2003年河南森林资源清查数据,以生物量与蓄积量之间的关系模型为基础,对河南的森林生物量及生产力进行了估计.结果表明,河南森林的总生物量为11 154.49万t,其中,林分为9 346.18万t,经济林1 677.96万t,竹林130.35万t,林分单位面积平均生物量为47.27 t.hm-2.全省林分总生产力为504.84万t.a-1,单位面积平均生产力为2.55 t.hm-2.a-1.研究结果还表明,河南森林单位面积平均生物量低于全国平均水平,生物量与蓄积量的平均比值高于全国平均水平.

Based on the data of continuous forest inventory of Henan Province in 2003, the forest biomass and productivity in Henan are estimated using the biomass expansion factors （BEF, defined as theratio of all stand biomass to growing stock volume） of various forest types. The result show that the total biomass in Henan forest vegetation wasll 154.49 × 10^4 t,of which 9 346.18 × 10^4 t for stands, 1 677.96 × 10^4 t for economic forest, 130.35 × 10^4 t for bamboo forests; and the mean biomass is 47.27 t·hm^-2. The total productivity for stands was 504.84 × 10^4 t·a^- 1, with a mean productivity of 2.55 t·hm^- 2·a^-1. The result also show that the mean biomass of Henan forest vegetation was lower that of the national level, and the average ratio of all stand biomass to growing stock volume was higher than that of the national level.