摘要
更新复壮技术对大熊猫主食竹种之一冷箭竹的种群密度和地上部分生物量的影响的研究,结果表明:更新复壮技术主要提高冷箭竹1～3年生的种群密度和地上部分生物量,1～3年生冷箭竹实验区的种群密度为24.4株m^(-2),是对照区的1.88倍;生物量为1064.021kg/hm^2,是对照区的1.49倍。其各器官生物量的排序为竹秆>竹枝>竹叶,并且为大熊猫提供了更多的可利用的食物量,约1007.909kg/hm^2,为对照区的1.40倍。同时,还探讨了不同林分类型和经营措施内冷箭竹的种群密度和生物量,对于林分类型的影响效果为,糙皮桦—冷箭竹林>岷江冷杉—冷箭竹林>红桦—冷箭竹林,对于经营措施来说,则是集约经营最好,中等经营次之,粗放经营较差。总之,更新复壮技术能够延缓冷箭竹的开花枯死,促进新笋萌发,提高竹子生物量,从而缓解大熊猫的食物危机,促进大熊猫的生存繁衍。
Study on effect of rejuvenation technique on population density and above-ground biomass of Bashania fangiana which is the staple food of giant panda showed that population density and above-ground biomass of 1-3 years B. fangiana increased to 24.4 culm/m2 and 1064.021 kg/hm2 which is 1.88 and 1.49 time of the control. Biomass of organs is stem>branch>leaf. Meantime,study on effect of rejuvenation technique on population density and biomass of B. fangiana with different type and management indicated that the effect was: Betula utilis-Bashania fangiana forest>Abies faxoniana-Bashania fagiana forest>B. albo-sinensts-Bashania fagiana forest; intensive management >middle management>extensive management. Rejuvenation technique could not only retard flowering of bamboo, but also accumulate shoot sprouting, increase bamboo biomass.
出处
《竹子研究汇刊》
北大核心
1994年第2期26-36,共11页
Journal of Bamboo Research
关键词
更新复壮
冷箭竹
种群
密度
生物量
rejuvenation
Bashania fagiana
popultion desity
biomass
