干旱区生态环境知识资源中心(Arid): 长江三峡地区全新世环境演变及其古文化响应

Arid

	长江三峡地区全新世环境演变及其古文化响应
其他题名	Climatic and Environmental Changes as well as Ancient Culture Response in the Yangtze Gorges Region
	史威 1; 朱诚 2; 李世杰 1; 马春梅 2
ISSN	0375-5444
出版年	2009
卷号	64 期号:11 页码:1303-1318
中文摘要	依据长江三峡地区大九湖和玉溪剖面AMS~(14)C测年数据(校正为日历年)建立了约9.3～2ka BP高分辨率多环境代用指标(delta~(13)C、K、腐殖化度、抱粉总浓度、Rb、Sr及Rb/Sr)的变化曲线,并在此基础上与研究区周边反映全新世气候环境变化的不同沉积记录进行综合对比分析.与此同时,本文还通过对研究区古遗址和古洪水层的统计分析,获取了本区新石器以来古文化兴衰变迁和古洪水发生的完整信息.研究结果表明:(1)本区全新世大暖期约出现在7.6～4 ka BP.9.3～7.6 ka BP,本区气候极不稳定,波动幅度大,总体上冷湿,多次出现显著的降温或干旱事件(9.1、8.2和7.7 ka BP前后);4～2 ka BP,本区气候较此前偏干凉,且波动频繁.(2)7.6～ka BP的大暖期分为三个演变阶段:即6～5 ka BP为大暖期的鼎盛期,气候稳定,温暖湿润,植被及生态条件优越,洪水发生频率低;7.6～6 ka BP和5～4 ka BP为大暖期中具有不稳定特征的过渡期,其中5～4 ka BP及4 ka BP前后的降温事件仍较显著,且多发洪水.(3)本区史前古文化的主要形成发展期与大暖期持续阶段相对应,其中耕作业相对发达的大溪文化繁荣期出现在大暖期中的鼎盛阶段(约6～5 ka BP),大溪文化前后处于低潮及表现为衰退现象的古文化则对应气候环境的不稳定期,总体上,研究区古文化响应气候环境变化的主要方式是通过改变其生业结构的途径来实现的.
英文摘要	Yuxi and Dajiuhu profiles in the Three Gorges Region are chosen in this study, and based upon AMS14C dating (calibrated CY), we establish the high-resolution curves of various proxy indicators (delta~(13)C, K, humification coefficient, total concentration of spore-pollen, Rb, Sr and Rb/Sr) during 9.3-2 kaBP. Besides we synthetically compare and analyze the records of climatic and environmental changes in Holocene sediments in the surrounding areas, we also obtain the materials of prosperity, decline and transition of ancient culture as well as the flood information from the Neolithic Age to historical periods by making statistical analysis of archaeological sites and paleoflood layers of the study area. The results show that: (1) Megatherma in Holocene appeared during 7.6-4 kaBP in the Three Gorges Region. During 9.3-7.6 kaBP, the climate in the study area was very unstable, drastically fluctuating, wet-cold in general, occurring cold or arid events more than once (approximately 9.1, 8.2 and 7.7 kaBP). During 4-2 kaBP, the climatic fluctuation was frequent, and trending slightly cold-dry than before. (2) The Megatherma during 7.6-4 kaBP can be divided into three stages: namely 1) the stage of 6-5 kaBP was the prime of Megatherma, when the climate was stable, warm-wet, with predominent vegetation and ecological environment as well as low frequency of flood events; 2) the stages of 7.6-6 kaBP and 5-4 kaBP were the transition periods with unstable characteristics in Megatherma, among them, during 5-4 kaBP as well as around 4 kaBP, the cold events were still remarkable and the flood events were also frequent. (3) The formation and development of ancient culture in the study area in prehistoric period was mainly corresponding to Megatherma, Daxi culture that the planting industry was the most prosperous appeared in the prime (6-5 kaBP) of Megatherma, other types of ancient culture before and after Daxi culture which were at the low tide or showing decline corresponded to the stages that the climate and environment were unstable. Response of ancient culture in study area to the climatic and environmental changes was achieved through altering the modes of subsistence.
中文关键词	长江三峡 ; 全新世 ; 大几湖和玉溪剖面 ; 高分辨率多代用指标 ; 气候环境 ; 古文化
英文关键词	The Three Gorges Region Holocene Yuxi and Dajiuhu profiles climatic and environmental changes high-resolution proxy indicators ancient culture response
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3723529
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223377
作者单位	1.中国科学院南京地理与湖泊研究所, 南京, 江苏 210008, 中国; 2.南京大学地理与海洋科学学院, 南京, 江苏 210093, 中国
推荐引用方式 GB/T 7714	史威,朱诚,李世杰,等. 长江三峡地区全新世环境演变及其古文化响应[J],2009,64(11):1303-1318.
APA	史威,朱诚,李世杰,&马春梅.(2009).长江三峡地区全新世环境演变及其古文化响应.,64(11),1303-1318.
MLA	史威,et al."长江三峡地区全新世环境演变及其古文化响应".64.11(2009):1303-1318.