1.Key Laboratory of Soil and Water Conservation and Desertification Combating of Ministry of Education,College of Soil and Water
Conservation,Beijing Forestry University,100083,Beijing;2.Institute of Applied Ecology,Chinese Academy of Sciences,110016,Shenyang:China
Abstract：Applying the pipe model theory,tree architecture characteristics of Populus xiaozhuanica is（described）.It is a linear relation between the increasing of trunk biomass and descending of height.It is also a linear relation between leaf biomass and branch biomass that can't be affected by different way of dividing layers.And same relation exists（between） accumulated leaf biomass,branch and trunk biomass.The highest correlation coefficients were found between accumulated biomass and biomass per unit trunk.It is an exponent relation（between） accumulated trunk biomass and biomass per unit trunk,the value of exponent is from 1.1 to 1.3.（Relation） between sapwood area and total branch basal area is linear above breast-height.The pipe model for individual trees of Populus xiaozhuanica was made.Relation between diameter at breast height(D1.3) and（diameter） of heartwood（Dx） is documented: Dx=0.522exp(0.1698D1.3),r=0.9848.
陈军1；李春平1；关文彬1；刘艳辉1；张楠楠1；范志平2. 以管道理论为基础的林带小钻杨树体结构分析[J]. 中国水土保持科学, 2006, 4(5): 92-98.
Chen Jun,Li Chunping,Guan Wenbin,Liu Yanhui,Zhang Nannan,Fan Zhiping. Research on tree architecture of Populus xiaozhuanica in shelterbelts with pipe model theory. SSWCC, 2006, 4(5): 92-98.
2006, Vol. 4 
