干旱区生态环境知识资源中心(Arid): 西藏佩枯错盆地晚更新世以来的孢粉组合特征及其古气候意义

Arid

	西藏佩枯错盆地晚更新世以来的孢粉组合特征及其古气候意义
其他题名	Palynological Assemblages in the Paiku Co Basin of Tibet since Late Pleistocene and Their Paleoclimatic Significance
	边彦明 1; 余佳 2; 邵兆刚 2; 韩建恩 2; 贺承广 2
来源期刊	地球学报
ISSN	1006-3021
出版年	2013
卷号	34 期号:1 页码:87-94
中文摘要	西藏佩枯错盆地晚更新世以来河湖相沉积剖面的孢粉分析显示,该地区在晚更新世早期的12772kaB.P.时期,气候温和湿润,植被以针阔叶混交林为主;至6656kaB.P.时期,气候转变为温凉略干,植被转为疏林草原;在5649kaB.P.时期,气候温凉潮湿,植被又转为针阔叶混交林为主的森林草原;而在4946kaB.P.时期,气候温和偏干,植被转为疏林草原;在4631kaB.P.时期,气候寒凉湿润,植被表现为温度进一步下降的疏林草原;在3115kaB.P.时期,环境向寒冷方向发展,植被转为高寒草原;自11kaB.P.(全新世初期)开始,气候由温暖偏干转变为温凉偏湿,植被由灌丛草原转变为森林灌丛草原。这表明自晚更新世以来,该区气候环境是在逐渐变干的总趋势上,经历了多次明显的冷暖与干湿波动。
英文摘要	Based on an analysis of Sporopollen assemblages of fluvial-lacustrine sediments in Paiku Co basin of Tibet since late Pleistocene, the authors divided the climate evolution into seven stages as follows: During 127-72 ka B.P, the climate was warm and humid, and broad-leaved and coniferous mixed forests constituted the main vegetation here. Between 66 ka B.P and 56 ka B.P., the climate turned into warm and dry, and the vegetation changed into wood grassland. During 56-49 ka B.P., the climate was characterized again by wetness and warmness and broad-leaved and coniferous mixed forest-dominated forest steppe. From 49 to 46 ka B.P., the climate was temperate and dry, and the vegetation turned into wood grassland. Between 46 and 31 ka B.P, the basin had a cool and wet climate, and the wood grassland here was in a lower temperature environment. During 31-15 ka B.P., the climate turned into cold, and the vegetation displayed alpine grassland. Since 11 ka B.P, the climate here has turned from warm and dry to cool and wet, and the vegetation has changed from bushveld into forest bushveld. It is thus concluded that the climate and environment in this region have experienced several evident cold-warm and dry-humid fluctuations in the general trend of gradually becoming arid.
中文关键词	佩枯错 ; 晚更新世以来 ; 湖相沉积 ; 环境变化
英文关键词	Paiku Co late Pleistocene lacustrine deposit environmental change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PALEONTOLOGY
WOS研究方向	Paleontology
CSCD记录号	CSCD:4792369
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229382
作者单位	1.河南省地质调查院, 郑州, 河南 450001, 中国; 2.中国地质科学院地质力学研究所, 北京 100081, 中国
推荐引用方式 GB/T 7714	边彦明,余佳,邵兆刚,等. 西藏佩枯错盆地晚更新世以来的孢粉组合特征及其古气候意义[J],2013,34(1):87-94.
APA	边彦明,余佳,邵兆刚,韩建恩,&贺承广.(2013).西藏佩枯错盆地晚更新世以来的孢粉组合特征及其古气候意义.地球学报,34(1),87-94.
MLA	边彦明,et al."西藏佩枯错盆地晚更新世以来的孢粉组合特征及其古气候意义".地球学报 34.1(2013):87-94.