沿坝生态交错带不同落叶松群落生长动态研究  

Growth Dynamic of Larix principis-rupprechtii Mayr.Community along the Dam Ecotone

作　　者：张建华[1,2] 丁国栋[1] 姜鹏[3] 任仙[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]河北省木兰林管局,河北承德068450 [3]河北农业大学林学院,河北保定071001

出　　处：《西北林学院学报》2014年第2期42-48,共7页Journal of Northwest Forestry University

基　　金：河北省林业科学技术研究项目"桦落混交林优化抚育及改良"(1211435)

摘　　要：为探究沿坝生态交错带森林植被生长演替规律与动态,采用解析木分析方法,以木兰围场国有林场管理局北沟林场域内落叶松纯林(群落A)和落桦(群落B)、落阔(群落C)和杉落针阔混交林(群落D)4种不同华北落叶松群落类型为研究对象,对其不同群落内树木生长和生物多样性进行研究。结果表明:研究区不同落叶松群落内同一树种生长率和生物多样性指数均显示群落D最高,群落B、C次之,群落A最低;同一落叶松群落下的树种则表现出中、幼龄阶段阔叶树长势好于针叶树。从而得出,在植被生长演替过程中,阔叶山杨、白桦等树种将逐步被针叶落叶松、云杉树种所取代,最终形成稳定的杉落针阔混交林群落。In order to understand the succession and growth dynamics of forest vegetation along the dam e- cotone, the growth and biodiversity of 4 different community types of Laricc principis-rupprechtii Mayr. Forests were studied by examining analytical tree samples in Beigou Forest Farm of Mulanweichang Na- tional Forestry Management Bureau, including Larch pure forest （community A）, L. principis-ruppre- chtii and Betula platyphylla Suk. mixed forest （community B）, L. principis-rupprechtii and broad- leaved tree mixed forest （community C） and L. principis-rupprechtii, Picea asperata Mast. mixed forest （community D）. The results showed that the growth rate of the same species and the biodiversity index of community D were the best among the 4 communities, followed by community B and C, those of communi- ty A were the lowest. The hroadleaved trees were growing better than coniferous trees in the young-age and middle-age larch forests of the same community. It was concluded that P. davidiana, B. platyphylla would gradually be replaced by larch and spruce trees in the process of vegetation growth and succession, eventually a stable larch and spruce mixed forest would be established.

关 键 词：沿坝生态交错带 华北落叶松 生长动态 演替 

分 类 号：S718.5[农业科学—林学]