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林业资源管理 ›› 2021›› Issue (3): 89-95.doi: 10.13466/j.cnki.lyzygl.2021.03.014

• 科学研究 • 上一篇    下一篇

藏东南嘎朗国家湿地公园华山松种内与种间竞争强度研究

姚慧芳1,2,3(), 卢杰1,2,3(), 王超1,2,3, 陈康1,2,3   

  1. 1.西藏农牧学院 高原生态研究所,西藏 林芝 860000
    2.西藏高原森林生态教育部重点实验室,西藏 林芝 860000
    3.西藏林芝高山森林生态系统国家野外科学观测研究站,西藏 林芝 860000
  • 收稿日期:2021-02-24 修回日期:2021-04-13 出版日期:2021-06-28 发布日期:2021-08-04
  • 通讯作者: 卢杰
  • 作者简介:姚慧芳(1997-),女,内蒙古乌兰察布人,在读硕士,主要从事森林生态学方面的研究工作。Email: 2497587622@qq.com
  • 基金资助:
    科技部国家野外科学研究观测站(生态系统)运行补助项目“西藏林芝高山森林生态系统国家野外科学观测研究”(2015-2020);研究生创新项目“藏东南华山松林优势植物空间格局及其关联性研究”(YJS2020-29)

Intraspecific and Interspecific Competition Intensity of Pinus armandii in Galang National Wetland Park,Southeast Tibet

YAO Huifang1,2,3(), LU Jie1,2,3(), WANG Chao1,2,3, CHEN Kang1,2,3   

  1. 1. Institute of Tibet Plateau Ecology,Tibet Agriculture & Animal Husbandry University,Nyingchi,Tibet 860000,China
    2. Key Laboratory of Forest Ecology in Tibet Plateau(Tibet Agriculture & Animal Husbandry University),Ministry of Education,Nyingchi,Tibet 860000,China
    3. Tibet Nyingchi National Forest Ecosystem Observation & Research Station,Nyingchi,Tibet 860000,China
  • Received:2021-02-24 Revised:2021-04-13 Online:2021-06-28 Published:2021-08-04
  • Contact: LU Jie

摘要:

以藏东南嘎朗国家湿地公园内39株对象木及210株竞争木为研究对象,基于野外实地调查数据,利用Hegyi的单木竞争指数模型计算华山松群落内物种的竞争指数,并采用回归分析的方法建立对象木胸径与整个林分、伴生树种、种内竞争强度的函数模型。结果表明:1)华山松胸径与树高存在显著的幂函数关系;2)华山松的种内和种间竞争指数分别占总竞争指数的54.68%和45.32%,以种内竞争为主;3)华山松种间竞争树种的顺序为川滇高山栎>林芝云杉>高山松;4)华山松胸径与整个林分、伴生树种、种内的竞争指数呈显著的负相关关系,所得模型能有效的预测华山松种内和种间的竞争强度;5)华山松种群属于增长型,需加强保护成熟林以防出现断层。

关键词: 华山松, 种内竞争, 种间竞争, 竞争指数

Abstract:

Taking 39 target trees and 210 competitive trees in Galang National Wetland Park in southeast Tibet as the research objects,based on field survey data,the competition index of species in Pinus armandii community was calculated by Hegyi individual competitive indices(CI) model,and the regression analysis method was used to establish the functional model of DBH of target trees with the whole stand,associated tree species and intraspecific competition intensity.The results showed that:1) There was a significant power function relationship between DBH and tree height of P.armandii;2) The intraspecific and interspecific competition index of P.armandii accounted for 54.68 % and 45.32 % of the total competition index respectively,intraspecific competition was dominant in the community;3) The order of compe-titive species among P.armandii species was Quercus aquifolioides> Picea likiangensis var.linzhiensis> Pinus densata;4) The DBH of P.armandii had a significant negative correlation with the competition index of the whole stand,associated tree species and intraspecific,and the model can effectively predict the intraspecific and interspecific competition intensity of P.armandii;5) P.armandii population.belongs to the growth type,need to strengthen the protection of mature forest to prevent faults.

Key words: Pinus armandii, intraspecific competition, interspecific competition, competition index

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