巨柏生长过程分析  

Analysis of Growth Process of Cupressus gigantea

作　　者：刘盛赟 普隽坤 张欢 杨小林[2] LIU Shengyun;PU Junkun;ZHANG Huan;YANG Xiaolin(Power China Chengdu Engineering Corporation Limited,Chengdu Sichuan,611130,China;Resources&Environment College,Xizang Agriculture&Animal Husbandry University,Linzhi Xizang,860000,China)

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都611130 [2]西藏农牧学院资源与环境学院,西藏林芝860000

出　　处：《高原农业》2024年第5期496-501,共6页Journal of Plateau Agriculture

基　　金：“西藏高原林业生态工程重点实验室”资助。

摘　　要：为研究巨柏生长特征及规律,制定有效经营保护措施,本文以朗县天然分布区的巨柏平均标准木为研究对象,采用树干解析法,分析了其自然条件下生长变化规律。研究结果表明:129 a生巨柏标准木的树高、胸径与材积总生长量分别为12.4 m、25.2 cm与0.2090 m^(3);树高连年生长量和平均生长量曲线相交于118 a,达到树高成熟年龄;120 a胸径连年生长量已出现最大值0.51 cm,而平均生长量最大值仍未出现;巨柏材积平均生长量和连年生长量曲线相交于105 a,此时理论上巨柏达到数量成熟;巨柏生长过程分为3个阶段,1~80 a为幼树期,80~120 a为速生期,120 a后为近成熟期;近成熟期后随着树龄增长,巨柏树高、胸径及总生长量仍在增长,但生长速度逐渐减慢,最终可成千年古树。In order to study the growth characteristics and rules of Cupressus gigantea,effective management protection measures were formulated.In this paper,the average standard tree of Cupressus gigantea in the natural distribution area of Langxian was used as the research object,and the change rule of the growth of the Cupressus gigantea under natural growth conditions was analyzed by trunk analysis method.The results showed that the total growth of tree height,DBH,and volume of 129 a was 12.4m,25.2 cm and 0.2090 m^(3)respectively.The curves of annual growth of tree height and average growth of tree height intersected at 118 a,and reached the mature age of tree height at 120 a,the maximum annual growth of DBH was 0.51 cm,but the maximum average growth has not yet appeared;The average growth volume and annual growth curve of Cupressus gigantea intersect at 105 a,at which time theoretically reached quantitative maturity;The growth process of Cupressus gigantea was divided into three stages,1~80 a was the young stage,80~120 a was the rapid growth stage,and 120 a was the near maturity stage;After the near maturity period,with the increase of age,the height,DBH and total growth were still growing,and eventually grew into a thousand~year~old tree.

关 键 词：巨柏 树干解析 生长特性 生长过程 

分 类 号：S758.2[农业科学—森林经理学]