干旱区生态环境知识资源中心(Arid): 中德合作三江源区和甜水海地区多年冻土退化过程科学考察和研究进展

Arid

	中德合作三江源区和甜水海地区多年冻土退化过程科学考察和研究进展
其他题名	Progress of the Sino-German Joint Researches on the Degradation of Permafrost on the Tibetan Plateau
	俞祁浩; 金会军; 潘喜才; 盛煜; 魏智; 吴吉春
ISSN	1000-0240
出版年	2006
卷号	28 期号:6 页码:844-849
中文摘要	为准确了解青藏高原多年冻土退化过程及其环境效应,中国科学院寒区旱区环境与工程研究所和德国海德堡大学环境物理研究所共同组成科研小组,先后对我国三江源区、西昆仑甜水海地区进行了多年冻土退化过程的前期勘察研究工作.首次在人烟稀少的玉树-不冻泉沿线等地建立了3个长期综合观测研究站.在技术手段上,除应用常规的坑探、水土取样、水分现场观测、地面调查外,主要应用了最新的双天线、多回路探地雷达勘测技术,对不同地貌条件下的活动层结构特、?上限附近冻土结构、冷生组构等诸多方面进行了快速勘察,同时还进行了水分场分布规律、盐份迁移过程的初步研究.研究结果表明: 地表景观特征对热质迁移规律、地温场具有重要影响;青藏高原新疆甜水海地区的低温(<-4 ℃)冻土与高原东部和腹地的高温(>-1 ℃)冻土在地质背景和地下冰发育情况等方面有所区别;甜水海地区生态环境在过去30多年的时间里已发生重大改变:地表植被发生大面积退化,地表普遍发生不同程度盐渍化;在该地区发现大量小型冻胀丘、石环等冰缘现象的存在.探地雷达勘察结果显示,地表地貌单元、植被分布、地表水分条件的变化均对多年冻土上限变化和地下冰的赋存产生重要影响.
英文摘要	The Sino-Gerrnan joint expedition from the Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences and the Institute of Environmental Physics t University of Heidelberg, Germany, conducted investigation and preliminary research on the degradation of permafrost on the Tibetan Plateau and its environmental impacts in the source regions of the Yangtze, Yellow and Lancang-Mekong Rivers in the eastern plateau and in the Tianshuihai area in the West Kunlun Mountains, Three long-term monitoring stations were established along the road from Yushu to Budongquan in Qinghai Province. In addition to conventional exploratory methods, such as hand pits, water and soil sampling, in situ measurements of soil moistures and temperatures, and surface surveys, new multichannel ground penetrating radar (GPR) was applied for investigating structures of the active layer, permafrost, cryogenic phenomena and vegeta-tion differentiations, ground water tables and soil moistures, and migration of salts. The preliminary research shows that the characteristics of surface landscapes have pronounced influences on the heat and mass transfers in soils. Major differences between cold (<- 4℃) permafrost in the Tianshuihai area and warm (> -1℃) permafrost in the interior and eastern plateau can be seen in their tectonics and ground ice development, as well as ground temperatures. The ecological environments in the Tianshuihai area have changed greatly during the past 30 years: vegetation has degenerated or vanished in a large scale, together with considerable surface soil salinization. In the Tianshuihai area, small pingos, unsorted circles, sand wedges and polygons, and other periglacial phenomena were identified. GPR survey indicates that topography, vegetation, and surface moisture conditions have substantial impacts on the permafrost table and ground ice.
中文关键词	中德合作 ; 冻土退化 ; 三江源地区 ; 甜水海地区
英文关键词	Sino-German cooperation permafrost degradation source regions of the Yangtze Yellow and Lancang-Mekong Rivers Tianshuihai area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:2637134
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/2XILL650/219449
作者单位	中国科学院寒区旱区环境与工程研究所, 中科院冻土工程国家重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	俞祁浩,金会军,潘喜才,等. 中德合作三江源区和甜水海地区多年冻土退化过程科学考察和研究进展[J]. 中国科学院西北生态环境资源研究院,2006,28(6):844-849.
APA	俞祁浩,金会军,潘喜才,盛煜,魏智,&吴吉春.(2006).中德合作三江源区和甜水海地区多年冻土退化过程科学考察和研究进展.,28(6),844-849.
MLA	俞祁浩,et al."中德合作三江源区和甜水海地区多年冻土退化过程科学考察和研究进展".28.6(2006):844-849.