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岷江上游华山松人工林层次结构特征研究
引用本文:吴文妍,何丙辉,李武斌,包维楷,李芳兰,庞学勇.岷江上游华山松人工林层次结构特征研究[J].西南农业大学学报,2007,29(8):129-133.
作者姓名:吴文妍  何丙辉  李武斌  包维楷  李芳兰  庞学勇
作者单位:[1]西南大学资源与环境学院,重庆400716 [2]中国科学院成都生物研究所,成都610041
基金项目:国家重点基础研究(2005CB422000);中国科学院西部行动计划项目(KZCX2-XB2-02);中国科学院知识创新工程项目(KZCX3-SW-339;KSCX1-07-02);中国科学院台站网络基金与“西部之光”人才计划项目共同资助.
摘    要:通过对岷江上游25年生华山松人工林研究发现:华山松郁闭度和胸径生长都随华山松密度增大而增大;华山松郁闭度与林下灌木的生长呈显著负相关;林下灌木盖度与草本盖度呈负相关,与草本物种丰富度、高度和密度等呈正相关.综合分析表明:华山松密度和郁闭度对群落的层次结构配置具有重要的影响,为了提高群落的多样性和种群更新能力,更好地发挥群落生态功能,华山松人工林的营造密度应为2 000~2 500株/hm2,郁闭度维持在60%-70%左右.

关 键 词:华山松  层次结构  密度  郁闭度
文章编号:1673-9868(2007)08-0129-05
修稿时间:2006-10-31

A Study on Hierarchical Structure of Pinus armandii Plantation in the Upper Reaches of the Minjiang River, China
WU Wen-yan, HEI Bing-hui, LI Wu-bing, BAO Wei-kai, LI Fang-lan, PANG Xue-yong.A Study on Hierarchical Structure of Pinus armandii Plantation in the Upper Reaches of the Minjiang River, China[J].Journal of Southwest Agricultural University,2007,29(8):129-133.
Authors:WU Wen-yan  HEI Bing-hui  LI Wu-bing  BAO Wei-kai  LI Fang-lan  PANG Xue-yong
Institution:1. School of Resiurces and Environmental Sciences, Southwest University, Chongqing 400716, China ;2. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
Abstract:The effects of Pinus armandii canopy density, or degree of closure, on its growth and on understory shrubs and herbs were analyzed. A negative relationship was found to exist between P. armandii canopy density and the growth parameters of the understory plants. The coverage of the shrub layer was positively correlated with the richness, height and density of the herb layer. Based on the data presented in this study, this paper recommends a moderate density of 2 000-2 500 stems/ha for P. armandii plantations, which will maintain a degree of closure of 60%-70% and match with the management strategy of sustainable development for forestry.
Keywords:Pinus armandiil hierarchical structure l density~ degree of closure
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