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.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
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
关键词
大兴安岭
兴安落叶松
火烧迹地
群落演替
Great Xing’an Mountains
Larix dahurica
Burned forestland
Community succession
