攀西地区德昌杉木生长过程分析  

The Growth Process of Cunninghamia unica in Panxi Area

作　　者：贾晨[1] 周永丽[1] 罗建勋[1] 宋鹏[1] 尤世慧 李杰[1,3] JIA Chen;ZHOU Yong-li;LUO Jian-xun;SONG Peng;YOU Shi-hui;LI Jie(Sichuan Academy of Forestry,Chengdu Sichuan 610081,P.R.China;Forestry Bureau of YanYuan, Liangshan Sichuan 615700,P.R.China;Chengdu University,Chengdu Sichuan 610106,P.R.China)

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]盐源县林业局,四川凉山615700 [3]成都大学,四川成都610106

出　　处：《西部林业科学》2018年第2期81-85,共5页Journal of West China Forestry Science

基　　金：四川杉木速生材高效培育技术研究项目(2016YFD0600302-5)

摘　　要：采用树干解析法对德昌杉木人工林生长规律进行研究。结果表明,38年生德昌杉木的树高、胸径与材积总生长量分别为18.34m、25.52cm与0.462 2m^3。德昌杉木树高年平均生长量在27年生时达到最大值,树高数量成熟龄约为28年,胸径生长培育关键期是在植株生长的前24年,材积的连年生长量在30年生时达到最大值,为0.024 68m^3,材积的数量成熟龄为41年。德昌杉木生长过程可分为4个阶段,1-9年为幼树期,10-30年为速生期,31-40年为近成熟期,41年后为成熟期。By using stem analysis method,the growth process of planted Cunninghamia unica was conducted in Dechang county of Sichuan province.The results showed that tree height,DBH and total volume increment of the 38 year old Cunninghamia unica were 18.34m,25.52cm and 0.462 2m 3 respectively.The annual increment of tree height reached maximum at the 27-year-old,its quantitative maturity age was about the 28-year-old,its critical growth period of DBH was in the first 24 years of plant growth,the annual increment of volume reached maximum(0.024 68m 3)at the 30-year-old,its quantitative maturity age was about the 41-year-old.The growth process of Cunninghamia unica can be divided into four stages,namely,the sapling stage(1-9a),the fast-growing stage(10-30a),the near-mature period(31-40a),the mature period(after 41a).

关 键 词：德昌杉木 生长特性 生长过程 

分 类 号：S791.27[农业科学—林木遗传育种]