干旱区生态环境知识资源中心(Arid): 内蒙古黄旗海中晚全新世(3580-1630cal.a B.P.)气候环境记录

Arid

	内蒙古黄旗海中晚全新世(3580-1630cal.a B.P.)气候环境记录
其他题名	MID-LATE HOLOCENE (3580?1630cal.a B.P.)CLIMATE AND ENVIRONMENT RECORDS FROM HUANGQIHAI LAKE IN INNER MONGOLIA
	凌光久 1; 贾玉连 1; 马春梅 2; 彭学敏 1; 凌超豪 1; 龙进 1
来源期刊	第四纪研究
ISSN	1001-7410
出版年	2016
卷号	36 期号:2 页码:257-267
中文摘要	基于内蒙古东南缘黄旗海八台沟(40°50’2"N, 113°22’44"E; 1280m a.s.l.)剖面135cm厚的湖相地层5个AMS ~(14)C年龄的测定以及90块样品的孢粉、直径>50mum炭屑浓度、元素和粒度等高分辨率指标分析,重建黄旗海中晚全新世(3580?1630cal.a B.P.)的植被和气候环境演化过程。内蒙古黄旗海高分辨率指标记录揭示:3580~ 1630cal.a B.P.期间的黄旗海流域气候环境具有持续变干的特征,具体表现为:1) 3580~ 3000cal.a B.P.间,黄旗海湖面较高,湖泊水位在1291m以上,高于现今湖面23m以上,且最高湖面出现在3380cal.a B.P.之前,之后湖泊水位有所下降;3380cal.a B.P.之前植被类型为针-阔混交林,之后转变为以松属为主的针叶林,气候凉湿。2)3000 cal. a B.P.前后的约100年间,黄旗海快速变冷变干,湖泊迅速萎缩,植被转变为草甸草原;之后约1400年内,气候逐渐变干,温度有所上升,气候环境以暖干为特征;1630cal.a B.P.前后黄旗海湖面降到高出现在湖面不足9m的高度以下,之后再未出现超过此高度的湖侵。
英文摘要	Huangqihai Lake (an inland closed lake, 40°41 ’?41°43’N,112°49’?113°40’E) in the southeastern edge of Inner Mongolia, is located at the north boundary of East Asian summer monsoon. The climate of this area is typical arid to semi-arid, and the lake level of Huangqihai Lake is 1268m a.s.l. A 250cm-deep profile was obtained at Baitaigou (40°50’02"N, 113°22’44"E; 1280m a.s.l.) in Huangqihai Lake area. We studied the 135cm in middle part of the profile (230?95cm) and 90 samples (at 1.5cm intervals) were collected. 5 AMS ~(14)C dates in the 135cm-deep profile demonstrate that the lacustrine layer (230 ?100cm) is from 3580 cal.a B.P. to 1630 cal.a B.P. (Mid-Late Holocene). Based on high resolution proxies of pollen, charcoal (ф>50mum) content, elemental geochemistry and grain size analysis, the climatic evolution of Huangqihai Lake region in Mid-Late Holocene was reconstructed. Our data suggest that the climate of the Huangqihai Lake drainage was drying from 3580cal.a B.P. to 1630cal.a B.P., which is indicated by the following aspects. (1) From 3580cal.a B.P. to 3000cal.a B.P., the lake level of Huangqihai Lake was above 1291m a.s.l., 23m higher than the modern lake level. The lake level reached its maximum at around 3380cal.a B.P., and decreased afterwards. The lake level fall coincides with a transition to a colder and wetter climate,as deduced from vegetation changes (coniferous and broadleaved mixed forest to coniferous forests dominated by Pinus). (2) During a 100 years period around 3000 cal.a B.P., the Huangqihai Lake region underwent fast cooling and drying, accompanied by a rapid shrinkage of lake and change of vegetation type to grassland. During the subsequent 1400 years, climate changed to be dry and warm gradually. Around 1630 cal.a B.P., the Huangqihai Lake fell to a lake level less than 9m higher than the present lake level, and never reached this height since then.
中文关键词	黄旗海 ; 孢粉 ; 中晚全新世
英文关键词	Huangqihai Lake pollen Mid-Late Holocene
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:5661429
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234134
作者单位	1.江西师范大学地理与环境学院, 鄱阳湖湿地与流域研究教育部重点实验室, 南昌, 江西 330022, 中国; 2.南京大学地理与海洋科学学院, 江苏省气候变化协同创新中心, 南京, 江苏 210023, 中国
推荐引用方式 GB/T 7714	凌光久,贾玉连,马春梅,等. 内蒙古黄旗海中晚全新世(3580-1630cal.a B.P.)气候环境记录[J],2016,36(2):257-267.
APA	凌光久,贾玉连,马春梅,彭学敏,凌超豪,&龙进.(2016).内蒙古黄旗海中晚全新世(3580-1630cal.a B.P.)气候环境记录.第四纪研究,36(2),257-267.
MLA	凌光久,et al."内蒙古黄旗海中晚全新世(3580-1630cal.a B.P.)气候环境记录".第四纪研究 36.2(2016):257-267.