Spring phenology rather than climate dominates the trends in peak of growing season in the Northern Hemisphere
Zhi Huang
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Search for more papers by this authorCorresponding Author
Lei Zhou
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Correspondence
Lei Zhou and Yonggang Chi, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
Email: zhoulei@zjnu.cn; chiyonggang@zjnu.cn
Search for more papers by this authorCorresponding Author
Yonggang Chi
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Correspondence
Lei Zhou and Yonggang Chi, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
Email: zhoulei@zjnu.cn; chiyonggang@zjnu.cn
Search for more papers by this authorZhi Huang
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Search for more papers by this authorCorresponding Author
Lei Zhou
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Correspondence
Lei Zhou and Yonggang Chi, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
Email: zhoulei@zjnu.cn; chiyonggang@zjnu.cn
Search for more papers by this authorCorresponding Author
Yonggang Chi
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, China
Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
Correspondence
Lei Zhou and Yonggang Chi, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China.
Email: zhoulei@zjnu.cn; chiyonggang@zjnu.cn
Search for more papers by this authorAbstract
Shifts in plant phenology regulate ecosystem structure and function, which feeds back to the climate system. However, drivers for the peak of growing season (POS) in seasonal dynamics of terrestrial ecosystems remain unclear. Here, spatial–temporal patterns of POS dynamics were analyzed by solar-induced chlorophyll fluorescence (SIF) and vegetation index in the Northern Hemisphere over the past two decades from 2001 to 2020. Overall, a slow advanced POS was observed in the Northern Hemisphere, while a delayed POS distributed mainly in northeastern North America. Trends of POS were driven by the start of growing season (SOS) rather than pre-POS climate both at hemisphere and biome scale. The effect of SOS on the trends in POS was the strongest in shrublands while the weakest in evergreen broad-leaved forest. These findings highlight the crucial role of biological rhythms rather than climatic factors in exploring seasonal carbon dynamics and global carbon balance.
CONFLICT OF INTEREST STATEMENT
The authors declare no conflict of interest.
DATA AVAILABILITY STATEMENT
All data that support the findings of this study are available from Dryad at 10.5061/dryad.4j0zpc8hn.
Supporting Information
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© 2023 John Wiley & Sons Ltd.
Research funding
- Jinhua Science and Technology Research Program. Grant Numbers: 2021-4-340, 2020-4-184
- National Natural Science Foundation of China. Grant Number: 41871084
- Self-Design Project in Zhejiang Normal University. Grant Number: 2021ZS07
- Soft Science Research Program of Zhejiang Provincial Department of Science and Technology. Grant Number: 2022C35095
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Publication History
- 15 July 2023
- 17 May 2023
- 22 April 2023
- 16 December 2022

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