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Soil moisture shifts under warming are associated with divergent topsoil nitrogen responses in permafrost-affected ecosystems
Abstract Understanding how soil nitrogen (N) responds to climate warming is critical for predicting permafrost carbon–climate feedbacks, yet long-term N responses and their underlying mechanisms remain elusive. Here we show that divergent topsoil N responses to warming are associated with warming-induced shifts in soil moisture. Twelve-years of high-level warming increases topsoil N stocks in mesic alpine meadows but triggers substantial topsoil N losses in waterlogged swamp meadows.
Global hotspots of particulate organic carbon losses under climate change
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Abstract Soil organic carbon (SOC) comprises particulate (POC) and mineral-associated organic carbon (MAOC), which differ in formation, stabilization, and loss mechanisms. While the current global distribution of POC and MAOC is characterized, their vulnerability under future climate scenarios remains unclear.
By Siyi Sun, M. Francesca Cotrufo, Carsten Mueller, Morimaru Kida, Ailsa G. Hardie, Alec D. Mackay, Alexander H. Krichels, Wulf Amelung, Amit Kumar, Azamat Suleymanov, César Plaza, César Terrer, Chang Wei Liang, Chang Liao, Christopher Just, Ding Guo, Emanuele Lugato, Enqing Hou, Fan Ding, Fazhu Zhao, Feng Tao, Fernando Maestre, Franco Bilotto, Fuzhong Wu, Gisela García, Gongwen Luo, Guangxuan Han, Guillermo Hernandez-Ramirez, Gervasio Piñeiro, Haikuo Zhang, Haodi Xu, Inma Lebron, Irina Kurganova, Jennifer Blesh, Jeppe A. Kristensen, Ji Liu, Jiacong Zhou, Jianping Wu, Jitendra Ahirwal, Junji Cao, Jørgen Olesen, Karin Kauer, Katerina Georgiou, Kristof Van Oost, Kwame Frimpong, Lei Deng, Liane G. Benning, Liang Guo, Manuel Delgado-Baquerizo, Mehdi Rahmati, Min Luo, Olga Kalinina, Olli Hyvarinen, Pablo García-Palacios, Paige Hansen, Pengpeng Duan, Peter M. Homyak, Rajan Ghimire, Renaldas Žydelis, Roland Bol, Ruiying Chang, Ruyi Luo, Sebastian Horacio Villarino, Shuai Xue, Shuli Niu, Shuotong Chen, Tengfei Yu, Steven Hall, Thomas Kätterer, Tida Ge, Weixing Liu, Weiyu Shi, Wei Zhang, Wolfgang Wanek, Xiangrong Cheng, Xiankai Lu, Xiaojun Shi, Xiaoli Cheng, Xiaorong Wei, Xiaotong Liu, Xuhui Zhou, Yangquanwei Zhong, Yanjiang Cai, Yiqi Luo, Yixuan Zhang, Yunting Fang, Yuting Liang, Yuyi Li, Zengming Chen, Zhanfeng Liu, Zhaoliang Song, Zhongkui Luo, Zhisheng An, Ji Chen, R. A. Viscarra Rossel, Baoku Shi, Bernard Jackson Cosby, Guillermo A. Studdert, Guoxiang Niu, Gustavo Saiz, Hamada Abdelrahman, Kees Jan van Groenigen, Lizzie Mujuru, Maoz Dor, Patra Rounak, Pengzhi Zhao, Ronaldo Vibart, Vusumuzi Erick Mbanjwa, Vyacheslav M. Semenov, Yahya Kooch, Yunbin Qin
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Nature
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Net carbon dioxide sequestration by large alkaline lakes dominates the carbon exchange of Qinghai-Tibet Plateau lakes - Communications Earth & Environment
Abstract Alpine lakes on the Qinghai-Tibet Plateau (QTP) are rapidly expanding under climate change, yet their role in the regional carbon budget remains unclear. Here we analyze carbon flux data from 156 alpine lakes of varying sizes and find that these lakes acted as a net carbon sink of 6.7 Tg C yr−1 during 2011–2022, approximately one-fifth of the terrestrial carbon sink over the QTP.
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