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作 者 ：赵红艳^1，2;周道玮¹

期 刊 ：应用生态学报 2006年 17卷 02期 页码：197-200

关键词：植被；

摘 要 ：

对大桥泥炭地的孢粉进行了分析和年龄测定.根据孢粉组合、地层特征和¹⁴C年龄将剖面划分为4个孢粉带,分别为2 195±70～2 045±70 yr B.P.松为主的松-云冷杉-榛-栎-苔草组合带、2 045±70～1 745±70 yr B.P.苔草为主的松-桦-榛胡桃-苔草组合带、1 745±70～705±70 yr B.P.松-榛-鹅耳枥-苔草-毛茛组合带和705±70 yr B.P.～1 950 yr A.D.松-云冷杉-桦-苔草组合带.周围植被由温带山地针叶林（类似现今海拔1 100 m以上）、温带针阔混交林下部（类似现今海拔400～600 m）和温带针阔混交林中部（类似现今海拔600～800 m）过渡到温带针阔混交林上部（类似现今海拔800～1 100 m）.相应地，泥炭沼泽经历了孕育期、蓬勃发展期、继续扩张期和消亡期.

Abstract:

Based on the study of pollen,stratum and ¹⁴C dating of Daqiao fen in Dunhua of Jilin Province,four pollen zones were distinguished, i.e.,Pinus-Picea-Abies assemblage (2 195±70～2 045±70 B.P.),Carex-Pinus-Betula-Corylus-Juglans assemblage (2 045±70～1 745±70 B.P.),Pinus-Corylus-Carpinus-Carex-Ranunculus assemblage (1 745±70～705±70 B.P.),and Pinus-Picea-Abies-Betula-Carex assemblage (705±70～1 950 AD).The vegetation changed from coniferous forest (similar to the vegetation currently found over 1 100 m a.s.l.in this area),through conifer-broad-leaved mixed forest (similar to the vegetation currently found between 400～600 m a.s.l.) and conifer-broad-leaved mixed forest (similar to the vegetation currently found between 600～800 m a.s.l.),to conifer-broad-leaved mixed forest (similar to the vegetation currently found between 800～ 1 100 m a.s.l.).Accordingly,Daqiao fen underwent the periods of gestation,fast development,expansion,and dieing out.

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