Response to Comments on "Recent global decline of CO2 fertilization effects on vegetation photosynthesis"

Songhan Wang; Yongguang Zhang; Weimin Ju; Jing M Chen; Alessandro Cescatti; Jordi Sardans; Ivan A Janssens; Mousong Wu; Joseph A Berry; J Elliott Campbell; Marcos Fernández-Martínez; Ramdane Alkama; Stephen Sitch; William K Smith; Wenping Yuan; Wei He; Danica Lombardozzi; Markus Kautz; Dan Zhu; Sebastian Lienert; Etsushi Kato; Benjamin Poulter; Tanja G M Sanders; Inken Krüger; Rong Wang; Ning Zeng; Hanqin Tian; Nicolas Vuichard; Atul K Jain; Andy Wiltshire; Daniel S Goll; Josep Peñuelas

doi:10.1126/science.abg7484

Response to Comments on "Recent global decline of CO₂ fertilization effects on vegetation photosynthesis"

Science. 2021 Sep 24;373(6562):eabg7484. doi: 10.1126/science.abg7484. Epub 2021 Sep 23.

Authors

Songhan Wang^{1

2}, Yongguang Zhang^{1

2

3}, Weimin Ju^{1

2}, Jing M Chen^{1

4}, Alessandro Cescatti⁵, Jordi Sardans^{6

7}, Ivan A Janssens⁸, Mousong Wu^{1

2}, Joseph A Berry⁹, J Elliott Campbell^{9

10}, Marcos Fernández-Martínez⁸, Ramdane Alkama⁵, Stephen Sitch^{8

11}, William K Smith¹², Wenping Yuan¹³, Wei He^{1

2}, Danica Lombardozzi¹⁴, Markus Kautz¹⁵, Dan Zhu¹⁶, Sebastian Lienert¹⁷, Etsushi Kato¹⁸, Benjamin Poulter¹⁹, Tanja G M Sanders²⁰, Inken Krüger²⁰, Rong Wang²¹, Ning Zeng^{22

23}, Hanqin Tian²⁴, Nicolas Vuichard¹⁶, Atul K Jain²⁵, Andy Wiltshire¹¹, Daniel S Goll^{16

26}, Josep Peñuelas^{6

7}

Affiliations

¹ International Institute for Earth System Sciences, Nanjing University, Nanjing, China.
² Jiangsu Provincial Key Laboratory of Geographic Information Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing, Jiangsu 210023, China.
³ Huangshan Park Ecosystem Observation and Research Station, Ministry of Education, China.
⁴ Department of Geography and Planning, University of Toronto, Toronto, Ontario, Canada.
⁵ European Commission, Joint Research Centre (JRC), Ispra, Italy.
⁶ CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra 08193, Catalonia, Spain.
⁷ CREAF, Cerdanyola del Vallès 08193, Catalonia, Spain.
⁸ Department of Biology, Centre of Excellence PLECO (Plant and Vegetation Ecology), University of Antwerp, Wilrijk, Belgium.
⁹ Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA.
¹⁰ Sierra Nevada Research Institute, University of California, Merced, CA 95343, USA.
¹¹ College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
¹² School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA.
¹³ School of Atmospheric Sciences, Center for Monsoon and Environment Research, Sun Yat-Sen University, Guangzhou, China.
¹⁴ Terrestrial Sciences Section, National Center for Atmospheric Research, Boulder, CO, USA.
¹⁵ Forest Research Institute Baden-Württemberg, Freiburg, Germany.
¹⁶ Laboratoire des Sciences du Climat et de l'Environnement, CEA CNRS UVSQ, Gif-sur-Yvette, France.
¹⁷ Climate and Environmental Physics, Physics Institute, and Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.
¹⁸ Institute of Applied Energy, Tokyo, Japan.
¹⁹ NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
²⁰ Thünen Institute of Forest Ecosystems, 16225 Eberswalde, Germany.
²¹ Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
²² Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD 20742, USA.
²³ LASG, Institute of Atmospheric Physics, Chinese Academy of Science, Beijing 100029, China.
²⁴ International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, USA.
²⁵ Department of Atmospheric Sciences, University of Illinois, Urbana, IL 61801, USA.
²⁶ Institute of Geography, University of Augsburg, Augsburg, Germany.

PMID: 34554812
DOI: 10.1126/science.abg7484

Abstract

Our study suggests that the global CO₂ fertilization effect (CFE) on vegetation photosynthesis has declined during the past four decades. The Comments suggest that the temporal inconsistency in AVHRR data and the attribution method undermine the results’ robustness. Here, we provide additional evidence that these arguments did not affect our finding and that the global decline in CFE is robust.

Publication types

Comment

MeSH terms

Carbon Dioxide*
Fertilization
Photosynthesis*

Substances

Carbon Dioxide