摘要
本文对白水江自然保护区缺苞箭竹开花后的自然更新恢复过程进行了初步研究,结果表明:1.高生长呈指数函数增长。幼竹基径(或地径)呈直线函数增长。2.幼竹生物量的积累呈指数函数增长,其数学模型为,阳坡:W_(sa)=0.1970e^(0.6129t),W_(su)=0.0401e^(0.7111t);阴坡:W_(na)=1.3218e^(0.4167t),W_(nu)=0.4010e^(0.4415t)。3.缺苞箭竹的生物学曲线阳坡或半阳坡为,阴坡或半阴坡为。据此预报缺苞箭竹的恢复年限阳坡或半阳坡为16年,阴坡或半阴坡为19年。但竹林景观的恢复年限实际上要提前一些。同时阳坡或半阳坡比阴坡或半阴坡恢复年限短,说明缺苞箭竹开花后的恢复过程需一定的光照条件。
Preliminary study on natural regeneration process of bamboo forests after flower resulted that:
1. Height growth demonstrates exponential function and straight line function for basic diameter growth of young bamboos.
2. biomass accumulation of young bamboos is exponential function, its mathematiacal model for southern slope or half-southern slope:
Wsa = 0.1970e0.6129t, Wsu = 0.0401e0.7111t. for Northern slope or half-northern slope:
Was= 1.3218 e0.4167t, Waa= 0.4010 e0.44151.
3. growth curve of Fargesia denudata for southern slope or
half -southern slope: H=263/(1+e4.4032-0.4370t), for northern slope or half-
northern slope: Ha = 199/(1+e3.2044-0.2619t). According to the formulae,
years for regeneration can be forecasted: 16 years for those in southern slope, 19 years for those in the northern slope. In fact, the regeneration of bamboo forest landscape may be recovered sometimes earlier. Natural regeneration process of Fargesia denudata forests after flowering need sunlight condition.
出处
《竹子研究汇刊》
北大核心
1994年第2期37-44,共8页
Journal of Bamboo Research
关键词
缺苞箭竹
天然更新
Fargesia denudata
natural regeneration
bamboo forest flowering
