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吉林省敦化地区晚全新世泥炭沼泽孢粉组合特征及古植被

赵红艳1,2;周道玮1   

  1. 1东北师范大学吉林省生态恢复与生态系统管理重点实验室,长春 130024;2东北师范大学国家环境保护湿地生态与植被
    恢复重点实验室,长春 130024

  • 收稿日期:2005-03-21 修回日期:2003-09-02 出版日期:2006-02-18 发布日期:2006-02-18

Pollen assemblage and palaeo-vegetation of Late Holocene fen in Dunhua of Jilin Province

ZHAO Hongyan1,2;ZHOU Daowei1   

  1. 1Key Laboratory for Ecological Restoration & Ecosystem Management of Jilin Province,Northeast Normal University,Changchun 130024,China;2State Environment Protection Key Laboratory of Wetland Ecology & Vegetation Restoration,Northeast Normal University,Changchun 130024,China

  • Received:2005-03-21 Revised:2003-09-02 Online:2006-02-18 Published:2006-02-18

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.

关键词: 磷效率, 植物, 磷素高效利用, 基因型, 机制

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.

Key words: Phosphorus efficiency, Plant, High phosphorus use efficiency, Genotypes, Mechanism