摘要
对全封闭湖泊调角海子的湖沼相沉积进行高分辨率采样，并通过１４Ｃ测年建立了样品的时间序列；通过孢粉分析及孢粉资料的“地层约束聚类分析”，建立了主要孢粉类型的浓度和百分比图谱，划分出５个孢粉带和９个孢粉亚带，重建了区域植被演化历史，并据此初步探讨了区域全新世以来生态环境演化的规律。
The 143cm deep soil profile was made on lacustrine plain of Diaojiaohaizi lake (41°07′N、112°34′E) which is located on Huitengliang tableland (200m a.s.l.) of Daqing mountains.143 high resolution samples (66a/cm) and 13 radiocarbon dates ranging from 11440±135a B.P.to 2170±70a B.P.were obtained.The depth versus age diagram shows good linear relations between the depth and the age.Spore pollen analysis results of 67 samples show that the highest value of the total pollen concentration was 24600 grains per gram and the lowest was 0～20 grains per gram.In the pollen diagram,five pollen zones and nine pollen subzones were divided through stratigraphically constrained cluster analysis using the method of incremental sum of squares,based on which the vegetation evolution history was reconstructed and the environmental changes since 11ka B.P.were investigated.
出处
《植物生态学报》
CAS
CSCD
北大核心
1997年第6期551-563,共13页
Chinese Journal of Plant Ecology
基金
国家"八五"攀登计划
国家教委博士点基金
关键词
调角海子
全新世
古植被
生态环境
古植物生态学
Diaojiaohaizi,The holocene,Radiocarbon date,Sporepollen analysis,Paleovegetation and ecoenvironment
