椿叶花椒生长规律及林分生产力研究  

Stand Growth and Biomass of Zanthoxylum ailanthoides

作　　者：赵平[1] 何友军[2] 

机构地区：[1]国家林业局中南林业调查规划设计院,湖南长沙410014 [2]湖南省林业厅,湖南长沙410007

出　　处：《中南林业科技大学学报》2009年第5期67-71,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省林业厅重点项目(2006-12)

摘　　要：椿叶花椒为湖南重要的速生珍贵乡土阔叶树种.通过对23 a生天然林的调查分析,发现椿叶花椒的高生长在第5 a时进入速生期,15 a后生长速度放慢;胸径的生长在第10 a开始进入速生期,20 a后胸径生长开始下降,其平均连年生长量在13 a时最大,为1.05 cm,椿叶花椒材积的生长在15 a后进入速生期,材积的连年生长量在20 a时达到高峰,且持续时间长达10 a,比胸径连年生长量的最大值出现时间推迟8 a;林分生物量不受林分年龄的影响,均变现为树干>树根>树枝>树叶这样一条规律,且树干生物量占总生物量的58%以上,林分生产力高于湿地松、杉木,这将为湖南省营造椿叶花椒速生丰产林提供科学依据.Zanthoxylum ailanthoides is a fast-growing and broad-leaved tree belonging to the local species of Hunan Province.Investigation and analyses conducted in the paper of the growth and productivity of a 23year old Zanthoxylum ailanthoides forest show that its height growth comes into its fast-growing period in the 5th year and slows down after 10 years;that its growth of breast diameter speeds up in the 10th year and slows down after 10 years,reaching its average peak value of 1.05 cm in the 13th year;that its growth of timber volume moves into a fast-growing period in the 15th year,reaching its average peak value in the 20th year（8 years later than the growth of breast diameter） and lasting for 10 years;that its stand biomass is not affected by its stand age because its productivity follows the same rule： stemrootbranchleaf,and its stem biomass accounts for more than 58% of the total;and that its stand productivity is higher than that of Pinus elliottii and Cunninghamia lanceolata.This research will provide a scientific basis for building up fast-growing and high-yield plantations of Zanthoxylum ailanthoides.

关 键 词：森林培育学 椿叶花椒 林分生长 生产力 生物量 

分 类 号：S718.43[农业科学—林学] Q949.752.7[生物学—植物学]