Characterizing the Changes in Permafrost Thickness across Tibetan Plateau
Characterizing the Changes in Permafrost Thickness across Tibetan Plateau
复制标题
青藏高原多年冻土厚度变化特征
DOI：
10.3390/rs15010206
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发表时间：
2022-12
期刊：
影响因子：
5
通讯作者：
Yihang Zhang
中科院分区：
文献类型：
--
作者：
Yufeng Zhao;Yingying Yao;Huijun Jin;Bin Cao;Yue Hu;Youhua Ran;Yihang Zhang
永久冻土影响地下水文并决定埋藏生化物质的运输。目前对永久冻土的评估主要集中在上覆的活动层上。然而，永久冻土厚度的基本但缺失的信息限制了永久冻土退化对地下水文过程的趋势和影响的量化。我们的研究根据耦合模型比对项目（第六阶段）的八个地球系统模型（ESM）计算的分层土壤温度，量化了1851年至2100年青藏高原（TP）多年冻土厚度的长期变化，并通过现场观测和遥感多年冻土模式进行了验证。基于 ESM 计算的永久冻土分布通过 MODIS 数据集和现场调查得出的模式进行了验证。结果表明，青藏高原多年冻土厚度超过10 m，覆盖面积约97万平方公里，占青藏高原总面积的36.49%以上。 1851年至2014年青藏高原多年冻土厚度为43.20 m，2015年至2100年SSP126、SSP245、SSP370和SSP585情景下分别以平均每年9.42、14.99、18.78和20.75 cm的速度减少。 SSP585下羌塘盆地多年冻土厚度每年减少50厘米以上。我们的研究为多年冻土厚度时空变化提供了新的见解，并为进一步探索高原冰冻圈环境中相关的水文、地貌过程和生物地球化学循环提供了结合遥感、现场测量结果的基础数据集。
Permafrost impacts the subsurface hydrology and determines the transport of buried biochemical substances. Current evaluations of permafrost mostly focus on the overlying active layer. However, the basic but missing information of permafrost thickness constrains the quantification of trends and effects of permafrost degradation on subsurface hydrological processes. Our study quantified the long-term variations in permafrost thickness on the Tibetan Plateau (TP) between 1851 and 2100 based on layered soil temperatures calculated from eight earth system models (ESMs) of Coupled Model Intercomparison Project (the sixth phase) and validated by field observations and previous permafrost pattern from remote sensing. The calculated permafrost distribution based on ESMs was validated by the pattern derived from the MODIS datasets and field survey. Our results show that permafrost thicker than 10 m covers approximately 0.97 million km2 of the total area of the TP, which represents an areal extent of over 36.49% of the whole TP. The mean permafrost thickness of the TP was 43.20 m between 1851 and 2014, and it would decrease at an average rate of 9.42, 14.99, 18.78, and 20.75 cm per year under scenarios SSP126, SSP245, SSP370, and SSP585 from 2015 to 2100, respectively. The permafrost thickness will decrease by over 50 cm per year in Qiangtang Basin under SSP585. Our study provides new insights for spatiotemporal changes in permafrost thickness and a basic dataset combined results of remote sensing, field measurements for further exploring relevant hydrological, geomorphic processes and biogeochemical cycles in the plateau cryospheric environment.
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影响因子：
5.8
作者：
Bin Yong;Chi‐yuen Wang;Jiansheng Chen;Jiaqi Chen;Tao Wang;Ling Li;D. Barry
通讯作者：
Bin Yong;Chi‐yuen Wang;Jiansheng Chen;Jiaqi Chen;Tao Wang;Ling Li;D. Barry
影响因子：
42.1
作者：
B. Jones;G. Grosse;L. Farquharson;P. Roy-Léveillée;A. Veremeeva;M. Kanevskiy;B. Gaglioti;A. Breen;A. Parsekian;M. Ulrich;K. Hinkel
通讯作者：
B. Jones;G. Grosse;L. Farquharson;P. Roy-Léveillée;A. Veremeeva;M. Kanevskiy;B. Gaglioti;A. Breen;A. Parsekian;M. Ulrich;K. Hinkel
影响因子：
3.2
作者：
S. Evans;Brandon A. Yokeley;C. Stephens;Benjamin Brewer
通讯作者：
S. Evans;Brandon A. Yokeley;C. Stephens;Benjamin Brewer
影响因子：
4.9
作者：
V. Arora;Anna Katavouta;Richard G. Williams;C. Jones;V. Brovkin;P. Friedlingstein;J. Schwinger;L. Bopp;O. Boucher;P. Cadule;M. Chamberlain;J. Christian;C. Delire;R. Fisher;T. Hajima;T. Ilyina;E. Joetzjer;M. Kawamiya;C. Koven;J. Krasting;R. Law;D. Lawrence;A. Lenton;K. Lindsay;J. Pongratz;T. Raddatz;R. Séférian;K. Tachiiri;J. Tjiputra;A. Wiltshire;Tongwen Wu;T. Ziehn
通讯作者：
V. Arora;Anna Katavouta;Richard G. Williams;C. Jones;V. Brovkin;P. Friedlingstein;J. Schwinger;L. Bopp;O. Boucher;P. Cadule;M. Chamberlain;J. Christian;C. Delire;R. Fisher;T. Hajima;T. Ilyina;E. Joetzjer;M. Kawamiya;C. Koven;J. Krasting;R. Law;D. Lawrence;A. Lenton;K. Lindsay;J. Pongratz;T. Raddatz;R. Séférian;K. Tachiiri;J. Tjiputra;A. Wiltshire;Tongwen Wu;T. Ziehn
影响因子：
5
作者：
T. Sazonova;V. Romanovsky
通讯作者：
T. Sazonova;V. Romanovsky