文献类型： 外文期刊

作者： Li, Xiaojun ¹ ; Ciais, Philippe ³ ; Fensholt, Rasmus ⁴ ; Chave, Jerome ⁵ ; Sitch, Stephen ⁶ ; Canadell, Josep G. ⁷ ; Brandt, Martin ⁴ ; Fan, Lei ⁸ ; Xiao, Xiangming ⁹ ; Tao, Shengli ¹⁰ ; Wang, Huan ¹⁰ ; Albergel, Clement ¹¹ ; Yang, Hui ¹⁰ ; Frappart, Frederic ¹ ; Wang, Mengjia ¹² ; Bastos, Ana ¹³ ; Maisongrande, Philippe ¹⁴ ; Qin, Yuanwei ¹⁵ ; Xing, Zanpin ¹ ; Cui, Tianxiang ¹⁶ ; Yu, Ling ⁸ ; He, Lei ¹⁷ ; Zheng, Yi ¹ ; Liu, Xiangzhuo ¹ ; Liu, Yuqing ¹ ; De Truchis, Aurelien ¹⁹ ; Wigneron, Jean-Pierre ¹ ;

作者机构： 1.INRAE, Bordeaux Sci Agro, UMR 1391, ISPA, Villenave Dornon, France

2.Southwest Jiaotong Univ, Fac Geosci & Engn, Chengdu 611756, Peoples R China

3.Univ Paris Saclay, Lab Sci Climat & Environm, LSCE,IPSL, CEA,CNRS,UVSQ, Gif Sur Yvette, France

4.Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark

5.Univ Toulouse, Ctr Rech Biodivers & Environm, CNRS, IRD,Toulouse INP, Toulouse, France

6.Univ Exeter, Fac Environm Sci & Econ, Exeter, England

7.CSIRO Environm, Global Carbon Project, Canberra, ACT, Australia

8.Southwest Univ, Sch Geog Sci, Chongqing Jinfo Mt Karst Ecosyst, Natl Observat & Res Stn, Chongqing, Peoples R China

9.Univ Oklahoma, Sch Biol Sci, Norman, OK USA

10.Peking Univ, Inst Ecol, Coll Urban & Environm Sci, State Key Lab Vegetat Struct Funct & Construct Veg, Beijing 100871, Peoples R China

11.European Space Agcy Climate Off, ECSAT, Didcot, England

12.Zhengzhou Univ, Sch Geosci & Technol, Zhengzhou 450001, Peoples R China

13.Univ Leipzig, Inst Earth Syst Sci & Remote Sensing, Talstr 35, Leipzig, Germany

14.Ctr Natl Etud Spatiales, Toulouse, France

15.Hohai Univ, Coll Geog & Remote Sensing, Jiangsu Key Lab Soil & Water Proc Watershed, Nanjing 211000, Peoples R China

16.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210042, Jiangsu, Peoples R China

17.Chinese Acad Agr Sci, State Key Lab Efficient Utilizat Arable Land China, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

18.Sun Yat sen Univ, Sch Atmospher Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Guangdong, Peoples R China

19.Kayrros SAS, Paris, France

期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）

ISSN：

年卷期： 2025 年 16 卷 1 期

页码：

收录情况： SCI

摘要： Northern ecosystems (>= 30 degrees N) have been accumulating vegetation biomass carbon in recent decades, but increasing droughts and wildfires threaten this carbon sink. Here, we analyse annual changes in live vegetation biomass in northern ecosystems using low-frequency microwave satellite observations at 25 km spatial resolution from 2010 to 2022. We find that live biomass carbon stocks have undergone a reversal from a positive to a negative trend during the study period with 2016 marking the turning point. During 2016-2022, live biomass carbon stocks decreased at a rate of -0.20-0.26-0.11\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${-{{\mathbf{0.20}}}}_{-{{\mathbf{0.26}}}}<^>{-{{\mathbf{0.11}}}}$$\end{document} PgC yr-1 across northern ecosystems, primarily in temperate biomes (-0.26-0.33-0.17\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${-{{\mathbf{0.26}}}}_{-{{\mathbf{0.33}}}}<^>{-{{\mathbf{0.17}}}}$$\end{document} PgC yr-1). The annual mean gross loss of 4% of live biomass carbon in this region during 2016-2022 reflects high interannual variability, with significant losses associated with droughts and a further drop of -0.60-0.75-0.47\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${-{{\mathbf{0.60}}}}_{-{{\mathbf{0.75}}}}<^>{-{{\mathbf{0.47}}}}$$\end{document} PgC in the very dry year of 2022. Our findings highlight the vulnerability of live biomass carbon stocks to emerging climate-induced disturbances in northern ecosystems, challenging the sustainability of the current large terrestrial carbon sink in this key region for the global carbon balance.