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冰川冻土 ›› 2021, Vol. 43 ›› Issue (1): 135-144.doi: 10.7522/j.issn.1000-0240.2021.0001

所属专题: 第二次青藏科考论文集1

• 第二次青藏高原综合科学考察研究 • 上一篇    下一篇

青藏高原冰川氮记录研究进展

张玉兰1,2(), 康世昌1,2(), 史贵涛3,4, 杜文涛1   

  1. 1.中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室,甘肃 兰州 730000
    2.中国科学院 青藏高原地球科学 卓越创新中心,北京 100101
    3.华东师范大学 地理科学学院 地理信息科学教育部重点实验室,上海 200241
    4.华东师范大学 河口海岸学国家重点实验室,上海 200241
  • 收稿日期:2020-06-09 修回日期:2020-08-24 出版日期:2021-02-28 发布日期:2021-04-06
  • 通讯作者: 康世昌 E-mail:yulan.zhang@lzb.ac.cn;shichang.kang@lzb.ac.cn
  • 作者简介:张玉兰,副研究员,主要从事冰冻圈气候与环境记录研究. E-mail: yulan.zhang@lzb.ac.cn
  • 基金资助:
    第二次青藏高原综合科学考察研究项目(2019QZKK0605);国家自然科学基金项目(41671067);中国科学院“西部之光”项目;冰冻圈科学国家重点实验室自主课题(SKLCS-ZZ-2020)

Research progress on nitrogen records from glaciers in the Tibetan Plateau

Yulan ZHANG1,2(), Shichang KANG1,2(), Guitao SHI3,4, Wentao DU1   

  1. 1.State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.CAS Center for Excellence in Tibetan Plateau Earth Sciences,Chinese Academy of Sciences,Beijing 100101,China
    3.Key Laboratory of Geographic Information Science (Ministry of Education),School of Geographic Sciences,East China Normal University,Shanghai 200241,China
    4.State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China
  • Received:2020-06-09 Revised:2020-08-24 Online:2021-02-28 Published:2021-04-06
  • Contact: Shichang KANG E-mail:yulan.zhang@lzb.ac.cn;shichang.kang@lzb.ac.cn

摘要:

近年来,青藏高原冰川持续退缩,显著影响区域气候与生物地球化学循环。作为重要的营养元素,氮在生态系统中的循环备受关注。冰川中含氮化合物的迁移转化是冰冻圈地区氮循环的重要环节。基于青藏高原地区冰川氮记录研究,综述了近年来冰芯氮记录的历史变化,指出不同区域的变化趋势存在差异,认为一定程度上受亚洲地区人类活动排放污染物的影响。通过全面的雪冰氮(总氮以及NO3-、NH4+等)数据收集与分析,阐明了冰川雪冰中可溶无机氮北高南低的整体空间分布特征。利用冰川物质平衡数据,评估了气候变化背景下青藏高原冰川氮的释放量,结果表明:可溶无机氮年均释放量可达4 700 t?a-1以上。基于目前的研究与认识,提出了冰冻圈地区冰川雪冰氮研究的薄弱环节并进行了展望。在未来的研究中特别关注有机氮以及氮同位素的研究,加强冰川氮释放迁移对青藏高原冰冻圈地区氮循环的影响研究。

关键词: 冰川, 冰芯, 氮记录, 气候变化, 冰冻圈

Abstract:

The glaciers in the Tibetan Plateau has been experiencing rapid retreat during recent decades, which may significantly influence the regional climate change and biogeochemical cycles. As an important nutrient matter, the role of nitrogen in the ecosystems has caused many attentions. The migration and transformation of nitrogen components from glaciers are the important linkage of nitrogen cycle in cryospheric regions. Based on the glacier nitrogen (including total dissolved nitrogen, NO3-, NH4+) studies in the Tibetan Plateau, this paper synthesized the different trends of historical nitrogen variations from ice cores in different regions, which indicated the potential impact of anthropogenic emissions from Asia. We also illustrated the spatial distribution features of dissolved inorganic nitrogen from glaciers, which showed high level in the northern Tibetan Plateau, and vice versa. Based on the collected data of glacier mass balance, we estimated the export of nitrogen from Tibetan glaciers under climate change. The results revealed that the annual average dissolved inorganic nitrogen can reach to about 4 700 t?a-1. Upon to the present studies and understandings, we also provided the perspectives on further research on glacial nitrogen. In future, studies on the dissolved organic nitrogen and nitrogen isotopes should be strengthened. The transport and transform of nitrogen from the glacier melt and their impact on the nitrogen cycle in the cryospheric regions of the Tibetan Plateau should also be focused.

Key words: glacier, ice core, nitrogen records, climate change, cryosphere

中图分类号: 

  • P343.6