北京林业大学学报2013，Vol.35Issue(2)：45-50,6.
干热河谷20年生2种人工恢复植被个体生长特性研究
Individual growth characteristics of two tree species after 20 years of ecological restoration in a dry-hot valley of southwestern China
摘要
Abstract
The growth characteristics of 20-year-old Eucalyptus camaldulensis Dehuh and Leucaena leucocephala (Lam. ) Dewit in the monocultures and their mixed-species plantations in the Yuanmou Dry-hot Valley of southwestern China were investigated by a stem analysis. The results showed that all the DBH, height and volume of timber of E. camaldulensis in the mixed-species plantations grew faster than those in monoculture. The average increment and current annual increment of height of both the species declined. DBH of the two species declined during 5-10 years but increased during 10-15 years beside E. camaldulensis in the mixed-species plantations, and then all decreased. The changing rates of Logistic growth curve could scale 5-10, 10-25, and > 25 years as the early growth period, rapid growth period and stationary growth stage, respectively. Based on this model, E. camaldulensis in the monoculture and mixed-species plantations will obtain the quantitative maturity at the 23 years and 25 years after the trees were planted, respectively, and both the 24 years for L. leucocephala in the monoculture and mixed-species plantations. Some management measures such as thinning and increasing water and fertilizer supply in the early and rapid growth period were recommended based on this study.关键词
干热河谷/赤桉/新银合欢/生长动态/纯林/混交林Key words
dry-hot valley/ Eucalyptus camaldulensis/ Leucaena leucocephala/ growth dynamics/ monoculture plantation/ mixed forests分类
农业科技引用本文复制引用
李彬,唐国勇,李昆,高成杰,刘方炎,王小菲..干热河谷20年生2种人工恢复植被个体生长特性研究[J].北京林业大学学报,2013,35(2):45-50,6.基金项目
"十二五"国家科技支撑计划课题(2011BAD38B0404)、林业公益性行业科研专项(201104002-3-2)、国家自然科学基金项目(31100462). （2011BAD38B0404）
