杭州市郊黄梅坞林区天然紫楠林的群落结构与生长规律研究  

The Structure of the Natural Forest of Phoebe sheareri in Wangmeiwu Forest District of Hangzhou Suburb and Its Law of Growth

作　　者：洪利兴 杜国坚 

机构地区：[1]浙江省林业科学研究所

出　　处：《浙江林业科技》1989年第4期22-33,共12页Journal of Zhejiang Forestry Science and Technology

摘　　要：紫楠森林群落的成层结构分乔木层、下木层和草本层,其中乔木层又分两个亚层。紫楠的重要值(Ⅳ)为143.09,它在群落中起着主要的作用,另外还有石栎(Ⅳ33.13)、青刚(Ⅳ15.62)和白栎(Ⅳ12.04)等。根据Raunkier生活型分类有高位芽植物(67.07%),地上芽植物(0.0%)、地面芽植物(24.05%)、地下芽植物(6.32%)、一年生植物(2.53%),表明该紫楠林是分布于亚热带湿润季风气候区。但地面芽植物却多于相同气候区的其它常绿阔叶林,这反映该紫楠林是位于较冷湿的山谷小气候地段。紫楠个体生长分三个时期:慢生幼龄期(0～15年),速生壮龄期(16～30年),慢生近熟龄期(36年以后)。34年生紫楠胸径、高度和材积生长量可用下列回归方程估测:紫楠种群的发育从群落学水平上分三个阶段:发育初期(0～15年),发育盛期(16～35年),发育末期(36年以后)。40年生紫楠种群数量和蓄积生长可用下列回归方程估测:The community stratification of Phoebe sheareri forest were divlded into: arborous layes, undergrowth layer, herbaceous layer. The arborous layer could be divided into two sub-layers. The important value (Ⅳ) of phoebe sheareri was 143.09, so it plaied important role in the communty. Others were Lithocarpus glaber (Ⅳ 33.13), Cyclobalanopsis glauca (Ⅳ15.62) and Quercus fabri (Ⅳ 12.04), ect. The life forms according to Raunkier classification were: Pheanerophyta (67.09%),Chamaephyta (0.0%), Hemicryptophyta (24.05%), Geophyta (6.32%), Therophyta (2.53%), which presented that the forest was distributed in subtropical moist monsoon climate region. However the Hemicryptophyta was so more than the other evergreen forests in the same region, that indicated that the forest was lain the valley with cool and moist mlcroctimate. The growth of Phoebe sheareri could be divided into three periods: young period (0～15 yrs) growing slowly, middle period (16～30 yrs)growing rapidly, old period (after 31 yrs) growing slowly. Its growth, of diameter breast-height, height and volume for 34 yrs could be evaluated by the reqrcssion eguations: (?)=(14.81)/(1+e^(4.701162-0.222404A)), (?)=0.322764A-0.580601, (?)=10.43436×10^(-7)·A(3.886669). The development of Phoebe sheareri population could be divided into three stages, in terms of community: primary stage (0～15yrs), vigorous Stage (16～35 yrs), last stage (after 36 yrs). The quantity and store of the population for 40 yrs could be evaluated by the regression equations: (?)=(84)/(1+e^(6.912843-.0201823A)), V=0.0065824 e^(0.1495578A).

关 键 词：紫楠 地面芽植物 群落结构 一年生植物 高位芽植物 生活型 成层结构 下木层 草本层 种群数量 

分 类 号：S7[农业科学—林学]