文献类型：会议论文

英文题名：A study on effect of density/spacing on tree growth and stand volume of Eucalyptus urophylla plantation for pulp wood

作者：Li, GY[] Xu, JM[] Lu, ZH[] Chen, JB[]

第一作者：李光友

通信作者：Li, GY[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

会议论文集：International Symposium on Eucalyptus Plantations

会议日期：SEP 01, 2002-SEP 06, 2003

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

年份：2003

摘要：in this paper, the dynamic change of tree height, DBH and stand volume in different density/spacing treatments, the relationship between DBH and crown width, the basic density management for 5.9-year old E. urophylla plantation in Laibin County of Guangxi, China, were studied. The results indicated that plantation density had a negative correlation with height, DBH and standing volume growth. The superiority order of the density treatments in stand volume was > 667 > 2222 > 3333 trees/ha. After 3.7 years, spacing 2 m x 3 m performed better in height growth than 1 m x 6 m. The best treatment was 1667 trees/ha with stand volume 2.04 times of that of 3333 trees/ha. Three spacing treatments ranked in stand volume in order: 1667 > 2222 > 3333 trees/ha at 4.7-year old but 2222 > 1667 > 3333 trees/ha at 5.9-year old. The treatment of density 2222 trees/ha yielded 127.6 m(3)/ha, 1.17 times as much as that of 3333 trees/ha. The relationship between crown width and DBH could be described as Cw=0.4724xDBH(0.6175). By means of the regression analysis, the basic density for E. urophylla plantations was developed, and the desirable planting spacing for E. urophylla pulp wood production was also suggested.