干旱区生态环境知识资源中心(Arid): 东居延海易溶盐沉积与古气候环境变化

Arid

	东居延海易溶盐沉积与古气候环境变化
其他题名	Soluble Salt Sediments of East Juyan Lake and Its Indicating Palaeoclimate Environment Changes
	张洪 1; 靳鹤龄 1; 肖洪浪1 ; 陈月红 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2004
卷号	24 期号:4 页码:409-415
中文摘要	通过对黑河尾闾东居延海湖相沉积物易溶盐类K+、Na+、Ca2+、Mg2+、SO2-4、CO2-3、HCO-3、Cl-八大离子含量和其他相关指标的分析,依据它们在地层中的变化特征,结合地层14C年代测定结果,把东居延海湖泊变化划分为:隋唐湖泊面积较大时期、宋辽湖泊缩小时期、中世纪暖期湖泊扩张时期、小冰期湖泊缩小时期及20世纪湖泊干涸期等几个阶段.考虑近1 500 a来该流域气候变化和人类活动对湖泊的影响,得出了以下几个结论:近1 500 a来,东居延海湖区气候以干旱为主,湖泊逐渐萎缩;在干旱背景下存在气候波动,并与全球变化具有一致性;湖泊的盛衰演变受到气候变化和人类活动的双重影响,前期以自然变化为主,明清以来特别是清代以后,人类活动的影响加剧,成为主控因子.
英文摘要	By analyzing the distribution of the eight kinds of ions (K+ , Na+ , Caz+ , Mgz+ , SOr . C0\|~ , HCO_3~- , Cl~- ) in soluble salt sediments of the East Juyan Lake and other related indicators, the variation fea-tures of them in strata are depicted. Based on the analyzing results and combined with the UC dating ages, the vicissitude of the East Juyan Lake could be divided into several phases, such as the Sui-Tang Dynasty larger lake area period, the Song-Liao Dynasty lake area shrank period, the Medieval-Warm-Age lake area extended period, the Little-Ice-Age lake area shrank period and the 20th Century lake dried up period, etc. In general, arid climate dominantly controlled the study region in the past 1 500 years, as result the East Juyan Lake shrank gradually. On the background of arid climate there existed fluctuations between arid and humid, and the fluctuations kept pace with the global climate changes. Apart from climate change factor hu-man activity is also an important influencing factor on lake vicissitude, and they played the dominant role al-ternatively during different periods; the natural factor predominated in the former times, but the anthropo-genic factor became decisive since the Ming Dynasty especially the Qing Dynasty.
中文关键词	东居延海 ; 易溶盐 ; 中世纪暖期 ; 小冰期 ; 20世纪暖期
英文关键词	the East Juyan Lake soluble salt Medieval Warm Period Little Ice Age 20th Century Warm Period
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:1697443
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205753
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.河北省邯郸市环境保护局, 邯郸, 河北 056002, 中国
推荐引用方式 GB/T 7714	张洪,靳鹤龄,肖洪浪,等. 东居延海易溶盐沉积与古气候环境变化[J]. 中国科学院西北生态环境资源研究院,2004,24(4):409-415.
APA	张洪,靳鹤龄,肖洪浪,&陈月红.(2004).东居延海易溶盐沉积与古气候环境变化.中国沙漠,24(4),409-415.
MLA	张洪,et al."东居延海易溶盐沉积与古气候环境变化".中国沙漠 24.4(2004):409-415.