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祁连山中东部的冻土特征(Ⅱ):多年冻土特征 被引量:33

Permafrost in the Middle-East Section of Qilian Mountains(Ⅱ):Characters of permafrost
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摘要 祁连山中东部地区多年冻土年平均地温、冻土厚度等基本特征参量与海拔具有明显的相关性,海拔越高,地温越低,厚度亦越厚.年平均地温、厚度与纬度、经度关系不明显,可能与工作范围较小有关.对比分析了地表植被、地层岩性、土层含水(冰)量等局域性(非地带性)因素对冻土年平均地温的影响,发现腐殖层较厚,下伏细粒土层,较高的含水(冰)量对保持多年冻土较低的温度有利.阐述了冻土厚度的变化及其影响因素.与前人工作比较,分析冻土层钻孔测温曲线,发现该地区多年冻土正处于退化之中. Permafrost is widespread in the Qilian Mountains. Its essential parameters, such as the annual mean ground temperature and permafrost depth, are correlated with altitude obviously. The higher the elevation, the lower the ground temperature and the deeper the permafrost. The relations of annual mean ground temperature and depth of permafrost to latitude and longitude is inconspicuous because of less area being investigated. The influences of local factors on annual mean ground temperature, such as vegetation, stratum, water (ice) content etc., are analyzed. It is found that thicker humus and vegetation, fine grain soil, higher water content are the advantage for keeping lower temperature of permafrost. Contrasting to previous works in these area, it can be concluded that permafrost is degrading in the middle--east section of Qilian Mountains.
出处 《冰川冻土》 CSCD 北大核心 2007年第3期426-432,共7页 Journal of Glaciology and Geocryology
基金 国家自然科学基金项目(40471023) 国家自然科学基金对外交流与合作项目(40640420072)资助
关键词 祁连山 年平均地温 冻土退化 Qilian Mountains annual mean ground temperature degradation of permafrost
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参考文献15

  • 1程国栋.中国青藏高原多年冻土与加拿大北部多年冻土的一些差别.冰川冻土,1979,1(2):39-43. 被引量:2
  • 2Li Shude. The permafrost temperature and thickness along the Qinghai-Xizang Highway (Abstract). In: Proceedings of the Symposium on Glaciology and Cryopedology Held by Geographical Society of China (Cryopedology). Beijing:Science Press, 1982. 7-18.[李树德.青藏公路沿线多年冻土的温度和厚度(摘要).见:中国地理学会冰川冻土学术会议论文选集(冻土学).北京:科学出版社,1982.7-18.] 被引量:1
  • 3吴吉春,盛煜,于晖,李金平.祁连山中东部的冻土特征(Ⅱ):多年冻土特征[J].冰川冻土,2007,29(3):426-432. 被引量:33
  • 4程国栋 王绍令.试论中国高海拔多年冻土带的划分[J].冰川冻土,1982,4(2):1-17. 被引量:29
  • 5周幼吾等著..中国冻土[M].北京:科学出版社,2000:450.
  • 6郭鹏飞.祁连山地区的多年冻土[C]//第二届全国冻土学术会议论文选集.兰州:甘肃人民出版社,1983:30-35. 被引量:7
  • 7Ling Feng,Zhang Tingjun.Impact of the timing and duration of seasonal snow cover on the active layer and permafrost in the Alaskan Arctic[J].Permafrost and Periglacial Processes,2003,14:141-150. 被引量:1
  • 8木里冻土队.青海省木里煤田聚乎更矿区冻土与水源问题研究资料汇编,第一册[G].兰州,1971. 被引量:2
  • 9热水冻土队.青海热水柴达尔地区的冻土特征[C]//中国科学院兰州冰川冻土沙漠研究所集刊,第1号.北京:科学出版社,1976. 被引量:2
  • 10王绍令,赵秀锋,郭东信,黄以职.青藏高原冻土对气候变化的响应[J].冰川冻土,1996,18(S1):157-165. 被引量:106

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