摘要
利用森林蓄积量推算森林生物量和净生产量的方法，系统研究了我国森林植被的生物生产力。结果表明，我国森林生物生产力的地理分布规律与世界总趋势一致，但量上有差异，具体表现在：我国森林生物量的平均值小于世界平均水平，而净生产量却显得较高；我国森林的总生物量是９１０２．８７×１０６ｔ，其中，林分为８５９２．１３×１０６ｔ，经济林３２５．７２×１０６ｔ；竹林１８５．０２×１０６ｔ，疏林、灌木林７９０．５４×１０６ｔ；森林和疏林（含灌木林）的总生产力分别是１１７７．３１×１０６ｔ／ａ和４５８．１６×１０６ｔ／ａ。研究结果还显示，用材积推算的生物量（材积源生物量）比用平均生物量计算的结果更符合实际。分析中国森林在中国及全球陆地碳库中的作用发现，与其他区域和世界平均水平相比较，中国森林在中国陆地植被中所起的主导作用较弱，它的生物量不足全球森林总生物量的１％，然而，它在保护中国土壤碳库功能方面起着其他植被类型所无法替代的作用。
Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed. As a result, average biomass was smaller, and mean net preduction was higher in China than mean values of the world. Total biomass in Chinese forest vegetation was 9102. 9 × 106 t, of which 8592. 1 × 106 t for stands, 325. 7 × 106 t for economic forest, 185. 0 × 106 t for bamboo forests and 790. 5 × 10' t for scrub forest. The total net production was 1177. 3 × 106 t· a-1 for forest vegetation and 458. 2 × 106 t. a-1 for forests and scrub forests. Volume-derived biomass was smaller than that estimated by mean biomass method.Analyzing the contribution of Chinese forest carbon pool to the global terrestrial carbon pools,it was found that biomass of Chinese forest was small, with below 1% of the global forest biomass.
出处
《生态学报》
CAS
CSCD
北大核心
1996年第5期497-508,共12页
Acta Ecologica Sinica
基金
国家八五科技攻关项目
国家自然科学基金
关键词
森林生态学
森林植被
生物量
净生产量
forest biomass, global terrestrial carbon pool, net production, stem volume.
