干旱区生态环境知识资源中心(Arid): 青藏高原北部孢粉记录的全新世以来环境变化

Arid

	青藏高原北部孢粉记录的全新世以来环境变化
其他题名	Holocene environmental changes of northern Qinghai-Tibetan Plateau based on spore-pollen analysis
	赵振明 1; 刘爱民 2; 彭伟 3; 计文化 1; 李荣社 1; 王毅智 3; 朱迎堂 1
ISSN	1000-6060
出版年	2007
卷号	30 期号:3 页码:381-391
中文摘要	根据青藏高原北部同纬度地区,同一个垂直自然带内的西藏羊湖的湖相沉积、青海昆仑河河流相沉积、青海豆错(苦海)湖的湖相沉积记录的全新世以来孢粉(spore-pollen)资料的对比分析,表明:①极度干旱荒漠区的代表植被麻黄属(Ephedra)花粉平均百分含量,三个地区分别为:7.7%,4.2%,7.5%,总体上,羊湖地区的数值高于昆仑河地区与苦海地区.②代表气候湿润的禾本科(Gramineae)花粉平均百分含量,三个地区分别为:1.2%、4.9%、12.0%,从西向东数值逐渐升高.③代表气候湿润的蒿属(Artemisia)花粉平均百分含量,三个地区分别为:22.2%,43.6%,48.8%,从西向东数值逐渐升高.④代表气候干旱的藜科(Chenopodiaceae)花粉平均百分含量,三个地区分别为:52.1%,42.4%,11.5%,从西向东数值逐渐降低.⑤依据蒿属、藜科花粉百分含量,计算出环境变化指标,蒿属/藜科(A/C)值,三个地区的平均值分别为:0.45,1.23,5.59,从西向东比值逐渐升高,⑥麻黄属/蒿属值,在全新世晚期,三个地区都呈上升趋势,但幅度存在差异,分别为:0.45,0.34,0.28,从西向东数值逐渐降低.综观上述6个方面的变化规律,青藏高原北部全新世以来,干旱的程度从西向东逐渐降低;对青藏高原北部东西方向现今植被和环境的实际考察并结合上述变化规律,未来高原北部干旱变化的趋势将继续由西向东推移.
英文摘要	Based on the contrastive analysis of spore-pollen data since Holocene, recorded in the same latitude and vertical natural zones: Yang Lake deposition, Tibetan Autonomous Region, Kunlun Rive deposition and Doucuo (Ku-hai) Lake deposition, Qinghai Province. The results in these three regions have been given that (I) Ephedra,as dry and desert vegetation, the average percents are 7.7 in Yang Lake, 4.2 in Kunlun Rive, 7. 5 in Doucuo (Kuhai) Lake, and the datum in Yang Lake is higher than others; (2)Gramineae, as humid vegetation, the average percents are 1.2 in Yang Lake, 4. 9 in Kunlun Rive, 12.0 in Kuhai Lake, increasing gradually from west to east; (3)Artemisia, as humid vegetation, the average percents are 22.2 in Yang Lake, 43.6 in Kunlun Rive, 48.8 in Kuhai Lake, increasing gradually from west to east, too; (4)Chenopodiaceae, as dry vegetation, the average percents are 52.1 in Yang Lake, 42.4 in Kunlun Rive, 11.5 in Kuhai Lake, however, decreasing gradually from west to east; (5)Artemi-sia/Chenopodiaceae(A/C) ,the average data, as environmental changing index, are 0.45 in Yang Lake, 1.23 in Kunlun Rive, 5.59 in Kuhai Lake, increasing gradually from west to east, and there is higher data scope during3.0 ~4.3 ka BP in these two lake sediment profiles, then decreasing; (6)Ephedra/ Artemisia, data are all increased , but the amplitude is different, such as 0.45 in Yang Lake,0.34 in Kunlun Rive,0.28 in Kuhai Lake,decreasing gradually from west to east. These Characteristics have indicated that the dry level decreased gradually from west to east and its evolving tendency is still from west to east including a short wet period, in the northern of Qinghai-Tibetan Plateau since Holocene, after reconstructing from spore-pollen data of Paleovegetation and Paleoenvironment.
中文关键词	青藏高原北部 ; 全新世 ; 花粉百分含量 ; 蒿属/藜科(A/C)值 ; 麻黄属/蒿属值 ; 环境变化
英文关键词	northern of Qinghai-Tibetan Plateau Holocene pollen percents Arte/ra"a/Chenopodiaceae(A/C)data Ephedra/’Artemisia data environmental changes
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:2826046
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220926
作者单位	1.西安地质矿产研究所, 西安, 陕西 710054, 中国; 2.贵州省地质调查院, 贵阳, 贵州 550005, 中国; 3.青海省地质调查院, 西宁, 青海 810012, 中国
推荐引用方式 GB/T 7714	赵振明,刘爱民,彭伟,等. 青藏高原北部孢粉记录的全新世以来环境变化[J],2007,30(3):381-391.
APA	赵振明.,刘爱民.,彭伟.,计文化.,李荣社.,...&朱迎堂.(2007).青藏高原北部孢粉记录的全新世以来环境变化.,30(3),381-391.
MLA	赵振明,et al."青藏高原北部孢粉记录的全新世以来环境变化".30.3(2007):381-391.