大兴安岭兴安落叶松林火烧迹地群落演替状况  

Community Succession of Burned Forestland of Larix gmelinii in Great Xing’an Mountains

作　　者：孙家宝[1] 胡海清[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2010年第5期30-33,共4页Journal of Northeast Forestry University

基　　金：国家科技支撑计划项目(2006BAD03A0805;2008BAD95B10)资助

摘　　要：采用由植被空间序列推断时间系列的方法,分析了大兴安岭地区兴安落叶松(Larix gmelinii)林不同火强度火烧迹地群落演替状况。研究结果显示,重度火干扰后,兴安落叶松林群落演替趋势规律为:杂草丛或灌草丛→白桦山杨混交林→阔叶兴安落叶松林→兴安落叶松林;中度火干扰后,兴安落叶松林的群落演替趋势为:杨桦林或以阔叶树为主的针阔混交林→兴安落叶松林;轻度火干扰后,对兴安落叶松群落的影响较小,不能改变原有的树种组成,林分群落结构变化主要表现在灌木层和草本层中一些旱生物种与中湿生物种的替代过程。A field experiment was conducted to study the community succession of Larix dahurica forest after different intensities of fire disturbances by the methods of deducing time series from vegetation space alignment. After a serious fire disturbance,the succession regularity of L. dahurica community is from tussock or shrub to birch and poplar mixed forest,and to larch-birch-poplar mixed stands,and then to larch forests. After a moderate fire disturbance,the forest succession is from birch and poplar mixed forest or larch-broad leaved mixed forest to larch forest. However,the species composition of L. dahurica community did not change after a mild fire disturbance,but the community structure changed judging from the replacement of xerophyte by aletophyte in the shrub layer and herb layer.

关 键 词：大兴安岭 兴安落叶松 火烧迹地 群落演替 

分 类 号：S718.529[农业科学—林学] S762