林业科学2011，Vol.47Issue(3)：184-188,5.
107杨人工林密度对林木生长的影响
Effects of Stand Density on Growth of Populus × euramericana‘ Neva’ Plantations
摘要
Abstract
Based on investigation of 6 year old plantations of Populus × euramericana ‘ Nerd’ in Hengshui, the relationship between stand density and growth was studied. The results showed that there was negative relationship between stand density and stand mean diameter, mean tree height, mean crown width and mean individual volume. The average tree's diameter, height,crown width and volume for individual trees decreased with the increase of stand density in a certain range. The ratio of height to diameter of trees increased with high density. Stand volume first increased with the stand density in low density range,however decreased with the increase of stand density in higher density range. The optimum plantation density for stand growth was 1 000 -1 200 stem.hm-2 in Taocheng District and 800-1 000 stem·hm-2 in Wuyi County.关键词
107杨/人工林/林分密度/林分生长Key words
Populus × euramericana ‘ Neva’/ plantation/ stand density/ stand growth分类
农业科技引用本文复制引用
田新辉,孙荣喜,李军,赵长海,杨敏生..107杨人工林密度对林木生长的影响[J].林业科学,2011,47(3):184-188,5.基金项目
国家林业公益性行业科研专项经费重大项目"杨树产业资源材培育及新产品开发关键技术研究"(201004004). （201004004）
