美洲黑杨新无性系短伐期经营生物量研究  

A Study on Biomass of New Aigeiros Clones in the Short-rotation Management

作　　者：童再康[1] 郑勇平 朱建军 吴柏林 

机构地区：[1]南京林业大学,江苏南京210037 [2]浙江省林业局种苗总站,浙江杭州310004 [3]浙江省临海市双港林业站,浙江临海317000 [4]浙江省龙游县林业局,浙江龙游324400

出　　处：《江西农业大学学报》2002年第2期240-244,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金："八五"国家科技攻关项目子项目 (85 - 17- 0 2 );浙江省林业厅;教委资助项目

摘　　要：研究了美洲黑杨新无性系短伐期试验林 5年生 84个单株样本的生物量。结果表明 ,单株生物量随林分密度增大而下降 ,林分生物量随密度增大而增加。此时林分密度仍是影响林分生物量的主要因子 ;栽培品系是影响生物量的另一重要因素 ,不同无性系的生物量差异显著 ,36 6、35 1无性系显著优于对照 6 9杨 ,且以36 6无性系表现最优 ;不同管理水平也同样显著影响单株和林分生物量 ,集约经营是短周期栽培所必需的 ;依据树高和胸径分别建立了估算枝。The biomass of five-year-old 84 individuals from a short-rotation experimental plantation of new aigeiros clones was studied. It's shown that the biomass of an individual tree decreased with the increase in density of the plantation, while the biomass of the plantation increased with the increase in the density. Plantation density was still a major factor influencing biomass of the five-year-old plantation. Another important factor that had an effect on biomass was clones. There was a significant difference among clones. Clones 366 and 351 were apparently superior to clone 69 that had been used as a control, with clone 366 performing best. Management also had a significant influence on biomass of both individual trees and the plantation. Intensive management was necessary for short-rotation cultivation. A regression model has been established on the basis of tree height and DBH for biomass estimation of both branches and stems.

关 键 词：生物量 短伐期栽培 定向培育 美洲黑杨 新无性系 

分 类 号：S792.11[农业科学—林木遗传育种]