干旱区生态环境知识资源中心(Arid): 内蒙古萨拉乌苏河米浪沟湾MIS5以来生态环境演变特征

Arid

	内蒙古萨拉乌苏河米浪沟湾MIS5以来生态环境演变特征
其他题名	The characteristics of ecological environment change for the Milanggouwan section since MIS5 in the Salawusu catchment,Inner Mongolia
	樊荣 1; 赵琦 1; 李保生 2; 温小浩 2; 牛东风 2; 张成君
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2015
卷号	29 期号:1 页码:169-174
中文摘要	通过对毛乌素沙漠南缘萨拉乌苏河流域米浪沟湾地层中有机质含量(TOC)和饱和烃分布特征,以及沉积物中碳酸盐碳氧同位素组成的分析,讨论了该地区末次间冰期以来生态环境的演变特征和过程。 MIS5阶段为森林草原环境,气候比较湿润,河流径流量较大; MIS4和MIS2阶段气候干冷,以沙漠堆积为主,但 MIS2在16. 9-18. 4kaBP 期间有一次持续大约1. 5ka 的古环境适宜时期,森林草原发育; MIS3阶段气候温暖湿润,森林草原环境,湖泊发育; 全新世早中期总体上向干旱方向发展,湖泊动荡短暂,为较少森林的草原环境。到晚全新世以沙漠沉积为主,成为与目前生态环境相似的干草原环境。该地区的生态环境演变特征反映出主要受冬夏季风变化控制,但如果西风环流加强时期植被也相对发育。
英文摘要	Organic matter content (TOC)and n-alkane distributions,carbon and oxygen isotopic compositions of carbonate from the Milanggouwan section,which locates in mid part of the Salawusu River in the south boundary of Mus desert,had been analyzed for discussing and reconstructing the paleoecological environmental change since MIS5. The results showed that it was forest-grassland and warm-wet condition with amounts of runoff in the Salawusu river during the MIS5 stage. Desert enlarged in the stages of MIS4 and MIS2 under the dry and cold condition. There was an optimum period with blooming grassland and forest between 16. 9 to 18. 4kaBP in the MIS2 stage. Climate was forest-grassland ecological environment under the warm and wet condition in the MIS3 stage,and lake enlarged during this period. The ecological characteristic was grassland with few forest and temporary lake developing under dry paleoclimate to the mid-Holocene. Next,till to late Holocene,Salawusu area became to desert and dry grassland as modern environment in the Mu us Desert. The ecological environment change in this area was controlled by the winter and summer monsoon,but vegetation bloomed much more under westerly strengthening.
中文关键词	米浪沟湾 ; 末次间冰期 ; 饱和烃 ; 碳酸盐碳氧同位素组成
英文关键词	TOC Milanggouwan section last interglacia TOC n-alkane carbon and oxygen isotopic compositions
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5333160
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232764
作者单位	1.兰州大学资源环境学院环境科学与工程研究所, 兰州, 甘肃 730000, 中国; 2.华南师范大学地理科学学院, 广州, 广东 510631, 中国; 3.Institute of Earth and Environmental Science,University of Potsdam, Potsdam, Brandenburg 14476, Germany
推荐引用方式 GB/T 7714	樊荣,赵琦,李保生,等. 内蒙古萨拉乌苏河米浪沟湾MIS5以来生态环境演变特征[J]. 兰州大学,2015,29(1):169-174.
APA	樊荣,赵琦,李保生,温小浩,牛东风,&张成君.(2015).内蒙古萨拉乌苏河米浪沟湾MIS5以来生态环境演变特征.干旱区资源与环境,29(1),169-174.
MLA	樊荣,et al."内蒙古萨拉乌苏河米浪沟湾MIS5以来生态环境演变特征".干旱区资源与环境 29.1(2015):169-174.