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林业资源管理 ›› 2010›› Issue (5): 61-64.

• 科学技术 • 上一篇    下一篇

金沟岭林场针阔混交林直径结构动态分析

周宁1, 郑小贤1, 赵洪生2, 王斌2   

  1. 1.北京林业大学 省部共建森林培育与保护教育部重点实验室,北京 100083;
    2.吉林省汪清林业局金沟岭林场,吉林 汪清 133200
  • 收稿日期:2010-06-08 修回日期:2010-07-19 发布日期:2020-12-14
  • 通讯作者: 郑小贤(1956-),男,上海人,教授,研究方向为森林可持续经营。Email:zheng8355@bjfu.edu.cn
  • 作者简介:周宁(1982-),男,河北张家口人,在读硕士,研究方向为森林可持续经营。Email:zhouning-1982@163.com
  • 基金资助:
    林业公益性行业科研专项“我国典型森林类型健康经营关键技术研究”(01004002)

Dynamic Analysis on Diameter Structure of Mixed Coniferous and Broadleaved Forest in Jingouling Forest Farm

ZHOU Ning1, ZHENG Xiaoxian1, ZHAO Hongsheng2, Wang Bing2   

  1. 1. College of Resources and Environmental Sciences, Beijing Forestry University, Beijing 100083, China;
    2. Jingouling Forest Farm, Wangqing Forestry Bureau, Wangqing 133200, Jilin Province, China
  • Received:2010-06-08 Revised:2010-07-19 Published:2020-12-14

摘要: 以金沟岭林场云冷杉针阔混交林为研究对象,分析了该林场1987—2005年间41块固定样地的调查数据,计算了相邻径级的立木株数比q值,分析了其直径结构变化。研究表明:1) 林分小径阶q值逐年下降。18年来,I-1和I-3小区的q值分别从1.39和1.52下降到1.14和1.06,表明小径阶林木的直径结构已趋于不合理。2)6cm径阶以下的幼树更新较差。3)林分q值的均值不能真实地表达林分的直径结构,而按小径木、中径木和大径木来分别计算林分的q值,能够较真实地表达林分直径结构。

关键词: 金沟岭林场, q值理论, 直径结构, 针阔混交林

Abstract: This paper studied the mixed spruce-fir coniferous and broadleaved forest in Jingouling Forest Farm and analyzed survey data of 41 fixed sample plots from 1987 to 2005,calculated the q value which was the ratio of number of stems of adjacent diameter,described the diameter structure of the mixed coniferous and broadleaved stand.The research results show that:1) the q value of the small diameter trees is declining year by year.From 1987 to 2005,the q values of I-1 and I-3 district decreased from 1.39 and 1.52 to 1.14 and 1.06 respectively,which showed that the small diameter tree structure had become irrational in diameter structure.2)Saplings whose diameter below 6cm regenerated less.3)The mean q values can not display diameter structure of stand actually,while the q values calculated by the small diameter wood,the medium diameter trees and large diameter trees can display stand diameter structure more truly.

Key words: Jingouling Forest Farm, q value theory, diameter structure, mixed coniferous and broadleaved forest

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