林业科学2013，Vol.49Issue(7)：34-39,6.DOI:10.11707/j.1001-7488.20130705
栓皮栎伐桩萌苗保留量对其生长和生物量积累的影响
Effects of Reserved Sprout Number per Stump on Sprout Development and Biomass Accumulation of Quercus variabilis
摘要
Abstract
In this study,effects of sprouting number of Quercus variabilis on the seedlings growth and biomass accumulation were investigated with the 103 stumps in Qinling Mountain.Four treatments of removing sprouts were applied on the stumps after clearcutting,i.e.no removal of sprouts serving as control,reserving 1 sprout,3 sprouts or 5 sprouts per stump with all other sprouts removed.The results showed that the number of sprouts per stump reduced from the second year and then tent to stabilize the number in the fourth year after clearcutting during 5 years observation.Different treatments profoundly influenced sprout growth.The mean diameter,height,and crown of sprouts were decreased with the increasing of sprout number per stump.The basal diameter and height of Q.veriabilis sprouting seedlings under different treatments showed that:sunny slope ＞ shady slope; Compared with the control,basal diameter,and height of the reserved sprouting seedlings grew more rapidly in the first 3 year.The basal diameter and height of sprouts decreased with the increasing of the reserved sprout number.For 5 years after clearcutting,the biomass of sprout various components under different treatments in two habitats was ranked as:item ＞ branch ＞ leaf.With the reserved sprout numbers per stump increased,the total sprout biomass increased at first and then reduced,and the 3 sprouting seedlings reserved produced the most biomass.The result indicated that sprout numbers reserved on each Q.variabilis stump had significantly influence on sprouting seedling growth and biomass accumulation.The 1 sprout per stump reserved facilitated the seedling growth,while 3 sprouts per stump reserved favored to total seedling biomass accumulation.Reservation of no more than 3 sprouts per stump would achieve the different purposes to the secondary forest cultivation.关键词
栓皮栎/伐桩/保留萌苗数量/生物量积累Key words
Quercus variabilis/ stump/ reserved sprout number/ biomass accumulation分类
农业科技引用本文复制引用
易青春,张文辉,唐德瑞..栓皮栎伐桩萌苗保留量对其生长和生物量积累的影响[J].林业科学,2013,49(7):34-39,6.基金项目
林业公益性行业科研专项(201004011) （201004011）
国家自然科学基金项目(30872018) （30872018）
陕西省重点基础研究项目(2009JZ005). （2009JZ005）
