摘要
探讨了萌条年龄与根系年龄的不同组合，对刺槐薪炭林结构和生物量的影响。结果表明，未割柴林分的萌条密度、平均高度、平均地径、叶面积指数、生物量和生产量，均随年龄增长而增加。割柴后萌生的林分，萌条数量增长缓慢，其余指标均呈下降趋势。随萌条与根系年龄差距的加大，下降的趋势愈加显著。
The coppice systems are adopted in firewood forest featuring of short rotation andmultiple sprout rcgenerations.This results in unmatched in age between suckers and root sys-tem,obviously will affect stand structure and biomass of black locust firewood forest.Thestudies with black locust showed that the sucker density,average height,average diameter atfoot,leaf area index,stand biomass and productivity all increased with age before havestingfuel wood.And after the coppice systems were practiced,all growth paramcters of the standdecreased except the slow increase of sucker number.The greater difference in age betweensuckers and root system,the more serious affeet on stand growth,
关键词
根系年龄
萌条年龄
生物量
刺槐
firewood forest,root age,structure of stand
biomass
black locust
