干旱区生态环境知识资源中心(Arid): 沼泽沉积剖面特征元素比值及其环境意义--盐碱化指标及气候干湿变化

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	沼泽沉积剖面特征元素比值及其环境意义--盐碱化指标及气候干湿变化
其他题名	Ratio of Elements and Their Implications Within Typical Sedimentation Profile in the Marsh-Salinization Indicators and Climatic Change between the Arid and the Humid
	王国平; 刘景双; 翟正丽
来源期刊	地理科学
ISSN	1000-0690
出版年	2005
卷号	25 期号:3 页码:335-339
中文摘要	沼泽发育过程中堆积的各类沉积物真实地记录下区域环境演变与沼泽发育过程的信息.以向海沼泽湿地为研究对象,由137Cs、210pb法定年实现沉积层深度坐标向年代坐标的转换,对典型沉积剖面特征元素比值进行了综合剖析.结果表明:Sr/Ba、Rb/K、(CaO+K2O+Na2O)/Al2O3等比值具有盐碱化和气候干湿变化的指示意义.该区域的盐碱化并非只发生在近几十年,而是由来已久,只是近年来人类活动促进了盐碱化进程.霍林河流域近240年来气候存在冷干-暖湿-冷干的多次波动,1880年之前气候以冷干为主,并有小幅度波动;1880年后气候开始转暖,但仍以冷暖波动振荡为主.
英文摘要	The Xianghai Wetlands Nature Reserve (122°05’ - 122°31’E, 44°55’ -45°09’N) was situated in the western border of the Songnen Plain in Northeast China. It has been listed in the List of Wetlands of International Importance since 1992 ( Ramsar site No. 548). As downstream freshwater wetlands of the Huolin River, the Xianghai Wetlands, covering an area of 360 km2, located at parts of the semi-arid climatic zone and border with the Keerqin Desert. Except for rainfall, the main hydrological inputs (about 55. 2% )of the Xianghai Wetlands were from the Huolin River. ’The Huolin River originated from the Da Hinggan Mountains, flowed about 320km, and lost its watercourse and end at the Xianghai riverine wetlands. Xianghai Wetlands were located at transition zones of terrestrial and aquatic ecosystems, where they received sediment inputs from both systems. Accumula-tive sediments during marsh development really recorded the region environment change and marsh processes. Here we reported a case study on the Xianghai marsh wetlands at downstream of an interior river-Huolin River. By segmented sample with centimeter and assorted with 137Cs, 210Pb age measure, high-resolution analyzed sedi-ment element geochemistry in two typical sedimentation cores. Through analysis of ratios of elements in the typi-cal sedimentation profile, the following results are revealed; the ratios of Sr/Ba, Rb/K, and (CaO + K2O + Na2O)/Al2O3 are good indicators to diagnosis salinization and climatic change between the arid and the humid. The salinization in this area not only is occurred in recent several decades, but is long-standing, however, hu-man activities have enforced the progress and periods of salinization in recent years. Too much vibration has oc-curred between cool arid and warm humid during the recent 240 years in the Houlin River catchments.
中文关键词	元素比值 ; 盐碱化指标 ; 气候干湿变化 ; 沼泽
英文关键词	ratio of elements salinization indicators climatic change between the arid and the humid marsh
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1988954
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205989
作者单位	中国科学院东北地理与农业生态研究所, 长春, 吉林 130012, 中国
推荐引用方式 GB/T 7714	王国平,刘景双,翟正丽. 沼泽沉积剖面特征元素比值及其环境意义--盐碱化指标及气候干湿变化[J],2005,25(3):335-339.
APA	王国平,刘景双,&翟正丽.(2005).沼泽沉积剖面特征元素比值及其环境意义--盐碱化指标及气候干湿变化.地理科学,25(3),335-339.
MLA	王国平,et al."沼泽沉积剖面特征元素比值及其环境意义--盐碱化指标及气候干湿变化".地理科学 25.3(2005):335-339.