摘要
研究了不同调控措施下辽东栎灌丛再萌生株各生长因子的特征,分析了不同的人为调控措施对辽东栎次生灌丛再萌生能力的影响.结果表明,人为调控对辽东栎再萌生株的发生与生长有着重大影响.调控强度大,再萌生株的数量、高度较小,基径、单株生物量较大;调控强度小,再萌生株的数量、高度较大,基径、单株生物量较小.在辽东栎种群的更新过程中,幼苗与幼树间存在着明显的瓶颈现象,经过激烈的竞争生长,只有少数才能进入下一个生长季.生长季前清除所有再萌生株后,由于当年生长季调控措施的不同,再萌生能力出现差异.调控后,辽东栎灌丛再萌生株的总生物量主要与其高度有关.
The growth characters of Quercus liaotungensis resprouts were studied, and the effect of artificial adjustment was analysed. The results showed that ： artificial adjustment had important effect on the occurrence and growth of the resprouts. The greater the intensity of the artificial adjustment, the fewer and shorter are the reprouts, and the bigger are the basal diameter and individual biomass. A boottlenect problem was found in the growth process from seedlings to young trees during the population regeneration of Q. liaotungensis, so only few resprouts survived from the serious competition. After cleaning all survived resprouts before the next growing season, the resprouting capability was different under different artificial adjusting intensityies. The above-ground total biomass of resprouts mainly depended on their height. Fig 2, Tab 3, Ref 31
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2007年第1期18-22,共5页
Chinese Journal of Applied and Environmental Biology
基金
国家"十五"科技攻关项目(2001BA606A-05)项目
西部行动计划项目(KZCX2-XB2-02)
中国科学院"西部之光"及野外台站(茂县生态站)网络基金项目共同资助~~
关键词
辽东栎
萌蘖
再萌生株
人为调控
Quercus liaotungensis
ramet
resprouting capability
artificial adjustment
