Acta Agrestia Sinica ›› 2023, Vol. 31 ›› Issue (4): 929-942.DOI: 10.11733/j.issn.1007-0435.2023.04.001

   

A Review on the Impact of Global Warming to Greenhouse Gas Flux in Frozen Ground Region

CHEN Zhe1,5, JIN Yan-xia1, SUN Jian3, SHAO Xin-qing4, WANG Ying-dian1,5, ZHAO Xin-quan2, WANG Wen-ying1,5, XIE Hui-chun1, ZHANG Zhen-hua2, ZHANG Li1, DU Yan-gong2, ZHOU Hua-kun2   

  1. 1. Qinghai Normal University/Academy of Plateau Science and Sustainability, Xining, Qinghai Province 810016, China;
    2. Northwest Institute of Plateau Biology, Chinese Academy of Sciences/Qinghai Provincial Key Laboratory of Restoration Ecology for Cold Regions, Xining, Qinghai Province 810008, China;
    3. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China;
    4. China Agricultural University, Beijing 100083, China;
    5. Qinghai Provincial Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization in Qinghai-Tibetan Plateau, Xining, Qinghai Province 810016, China
  • Received:2022-06-17 Revised:2022-12-04 Published:2023-04-28

全球变暖对高寒冻土区温室气体通量影响研究进展

陈哲1,5, 金艳霞1, 孙建3, 邵新庆4, 王英典1,5, 赵新全2, 王文颖1,5, 谢惠春1, 张振华2, 张莉1, 杜岩功2, 周华坤2   

  1. 1. 青海师范大学/高原科学与可持续发展研究院, 青海 西宁 810016;
    2. 中国科学院西北高原生物研究所, 青海 西宁 810008;
    3. 中国科学院青藏高原研究所, 北京 100085;
    4. 中国农业大学, 北京 100083;
    5. 青海省青藏高原生物多样性形成机制与 综合利用重点实验室, 青海 西宁 810016
  • 通讯作者: 杜岩功,E-mail:ygdu@nwipb.cas.cn;周华坤,E-mail:hkzhou@nwipb.cas.cn
  • 作者简介:陈哲(1986-),男,汉族,陕西眉县人,博士,副教授,主要从事高寒草地生态系统生态学研究,E-mail:chenzhe@qhnu.edu.cn
  • 基金资助:
    青海省自然科学基金(2018-ZJ-935Q);青藏高原第二次综合科学考察(2019QZKK0302-02);国家自然基金(32260288);海南州科技支撑计划项目(2022-KZ01-A)资助

Abstract: The Holarctic and Qinghai-Tibet Plateau are important organic carbon and nitrogen pool in terrestrial ecosystems. Global warming is changing the pattern of soil freeze-thaw in frozen ground in high latitude and/or high altitude regions. Such as accelerating permafrost degradation,promoting the organic matter decomposition in active layer of frozen soil,and causing a large amount of greenhouse gas emission. These positive feedbacks of climate change have been a main focus of global change ecology and biogeochemical cycle research. In this paper,we reviewed the characteristics and induced mechanisms of soil CO2,CH4 and N2O fluxes under freeze-thaw ground in the Holarctic and Qinghai-Tibet Plateau. We also discussed the relationship between the effects of net greenhouse emissions and global warming in the cold ecosystems. Furthermore,some key processes about the soil carbon emission and nitrogen conversion in frozen region to be focused on in the ongoing research were proposed with an intention to provide some references for the researches on the carbon and nitrogen cycle in frozen ground under the background of climate warming.

Key words: Climate warming, Holarctic, Qinghai-Tibet Plateau, Freeze-thaw effect, Effects of net greenhouse emission

摘要: 泛北极地区和青藏高原是陆地生态系统重要的有机碳、氮库。在气候变暖驱动下,高纬度或高海拔冻土融化加速,冻土活动层冻融格局改变,土壤有机质分解增加,成为全球重要的温室气体排放源,其对气候变化的“正反馈”效应受到越来越多关注。本文重点综述了近年泛北极和青藏高原冻土区土壤CO2,CH4和N2O三种主要温室气体通量对冻土退化及冻融作用的响应特征和影响机制,探讨了高寒地区生态系统净温室效应与气候变暖的相互关系,并简要提出了目前冻土区土壤碳排放和氮转化关键过程研究中需要加强的方面,旨在为继续深入开展气候变化背景下冻土碳氮循环研究提供参考。

关键词: 气候变暖, 泛北极, 青藏高原, 冻融作用, 净温室效应

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