干旱区生态环境知识资源中心(Arid): 祁连山区黑河上游多年冻土分布考察

Arid

	祁连山区黑河上游多年冻土分布考察
其他题名	Investigation on Permafrost Distribution over the Upper Reaches of the Heihe River in the Qilian Mountains
	王庆峰 1; 张廷军 2; 吴吉春 1; 彭小清 1; 钟歆玥 1; 牟翠翠 1; 王康 2; 吴青柏 1; 程国栋 1
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2013
卷号	35 期号:1 页码:19-29
中文摘要	高山多年冻土的分布及土壤季节冻融过程对地表水文过程、生态系统、碳循环及寒区工程建设等都有很大的影响.黑河上游地处祁连山中东部,属于高原亚寒带半干旱气候,研究黑河流域多年冻土分布对于系统理解该区域的生态-水文过程、气候与环境变化以及水资源评价、工程建设等非常重要.2011年68月对黑河干流源头西支开展了多年冻土调查,沿二尕公路(S204)在热水大坂垭口至石棉矿岔口之间区域,完成测温孔7眼,并布设测温管进行地温监测.根据勘察、钻探及测温资料,确定了黑河源头地区山地多年冻土下界为海拔3 650~3 700m之间.受高度地带性的控制,随着海拔的降低,活动层厚度由在海拔4 132m时的1.6m增加至在多年冻土下界处的约4.0m,多年冻土年平均地温也相应的由-1.7℃增加到0.0℃左右,而多年冻土厚度由100m以上减小到多年冻土下界处的0.0m.同时,坡度和坡向、岩性、含水(冰)量、地下水、河水等局地因素对多年冻土温度和厚度也有重要的作用.
英文摘要	Permafrost and seasonally frozen ground have a dramatic influence on surface hydrological processes, ecosystems, carbon cycle, and infrastructures in cold regions. The upper reaches of the Heihe River are located in the eastern part of the Qilian Mountains, where climate is cold and semi-arid. The study of permafrost distribution in Heihe River basin is of great importance for systematically understanding the regional eco-hydrological process, climate and environmental changes, water resources assessment and construction, etc. Field investigation on distribution of permafrost had been conducted over the upper reaches of the river during the summer of 2011. Seven boreholes ranging from 20to 100 min depths were drilled in early August, 2011. Based on borehole drilling information and temperature profiles measured at least two months after the drilling, it is found that the lower bound of permafrost is at between 3 650mand 3 700ma. s. l. Depending on altitude, the active layer depth varies from 1. 6m at 4 132ma. s. l. to about 4. 0mnear the lower bound of permafrost at a little above 3 650ma. s. l. Mean annual ground temperatures at the depth of zero annual amplitude increases from -1. 7 ℃ at 4 132ma. s. l. to near 0. 0 ℃ at the lower bound of permafrost. Permafrost depth decreases from more than 100mat 4 132ma. s. l. to 0. 0m as moving down to 3 650ma. s. l. At the same time, the other local factors, such as slope, aspect, soil type, soil water(ice)content, vegetation and river channel, may also have significant effect on permafrost conditions.
中文关键词	多年冻土下界 ; 活动层 ; 海拔 ; 年平均地温 ; 黑河流域
英文关键词	lower bound of permafrost active layer altitude mean annual ground temperature Heihe River basin
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:4787602
来源机构	中国科学院西北生态环境资源研究院 ; 兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229220
作者单位	1.中国科学院寒区旱区环境与工程研究所, 冻土工程国家重点实验室, 兰州, 甘肃 730000, 中国; 2.兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王庆峰,张廷军,吴吉春,等. 祁连山区黑河上游多年冻土分布考察[J]. 中国科学院西北生态环境资源研究院, 兰州大学,2013,35(1):19-29.
APA	王庆峰.,张廷军.,吴吉春.,彭小清.,钟歆玥.,...&程国栋.(2013).祁连山区黑河上游多年冻土分布考察.冰川冻土,35(1),19-29.
MLA	王庆峰,et al."祁连山区黑河上游多年冻土分布考察".冰川冻土 35.1(2013):19-29.