From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests
Abstract Drought dramatically impacts the autumn phenology of vegetation. However, the underlying mechanisms of vegetation autumn phenology responses to drought in tropical and subtropical forests remain unclear. Here, we employed three fitting methods to extract the end‐of‐photosynthetic‐growing‐se...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-10-01
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| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2024GL112054 |
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| _version_ | 1846170903320199168 |
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| author | Yue Xu Mingwei Li Zunchi Liu Yufeng Gong Zhaofei Wu Xiao Pu Yongshuo H. Fu |
| author_facet | Yue Xu Mingwei Li Zunchi Liu Yufeng Gong Zhaofei Wu Xiao Pu Yongshuo H. Fu |
| author_sort | Yue Xu |
| collection | DOAJ |
| description | Abstract Drought dramatically impacts the autumn phenology of vegetation. However, the underlying mechanisms of vegetation autumn phenology responses to drought in tropical and subtropical forests remain unclear. Here, we employed three fitting methods to extract the end‐of‐photosynthetic‐growing‐season (EOPS) dates and quantified their responses to drought intensity using ridge regression and correlation analysis. Our analysis revealed a general delay in the trend of EOPS at an average rate of 3.6 days per decade from 2001 to 2020 in southern China. The standardized precipitation evapotranspiration index (SPEI) emerged as the primary influencing predictor of EOPS processes, surpassing the impacts of temperature, precipitation, and radiation. Notably, our analysis highlighted a shift in the response of EOPS to drought from delay to advancement when drought intensity exceeded 0.38. Incorporating this reversal phenomenon into EOPS models is crucial for accurately predicting autumn phenology under future escalating drought conditions. |
| format | Article |
| id | doaj-art-66f9203d5b6245baa6ace2390cd58bf3 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-66f9203d5b6245baa6ace2390cd58bf32024-11-11T10:10:52ZengWileyGeophysical Research Letters0094-82761944-80072024-10-015120n/an/a10.1029/2024GL112054From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical ForestsYue Xu0Mingwei Li1Zunchi Liu2Yufeng Gong3Zhaofei Wu4Xiao Pu5Yongshuo H. Fu6College of Urban and Environmental Sciences Central China Normal University Wuhan ChinaCollege of Water Sciences Beijing Normal University Beijing ChinaCollege of Water Sciences Beijing Normal University Beijing ChinaCollege of Water Sciences Beijing Normal University Beijing ChinaCollege of Water Sciences Beijing Normal University Beijing ChinaCollege of Resource Environment and Tourism Capital Normal University Beijing ChinaCollege of Urban and Environmental Sciences Central China Normal University Wuhan ChinaAbstract Drought dramatically impacts the autumn phenology of vegetation. However, the underlying mechanisms of vegetation autumn phenology responses to drought in tropical and subtropical forests remain unclear. Here, we employed three fitting methods to extract the end‐of‐photosynthetic‐growing‐season (EOPS) dates and quantified their responses to drought intensity using ridge regression and correlation analysis. Our analysis revealed a general delay in the trend of EOPS at an average rate of 3.6 days per decade from 2001 to 2020 in southern China. The standardized precipitation evapotranspiration index (SPEI) emerged as the primary influencing predictor of EOPS processes, surpassing the impacts of temperature, precipitation, and radiation. Notably, our analysis highlighted a shift in the response of EOPS to drought from delay to advancement when drought intensity exceeded 0.38. Incorporating this reversal phenomenon into EOPS models is crucial for accurately predicting autumn phenology under future escalating drought conditions.https://doi.org/10.1029/2024GL112054autumn phenologyclimate changeSPEIsubtropical and tropical forestsdrought intensitythreshold |
| spellingShingle | Yue Xu Mingwei Li Zunchi Liu Yufeng Gong Zhaofei Wu Xiao Pu Yongshuo H. Fu From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests Geophysical Research Letters autumn phenology climate change SPEI subtropical and tropical forests drought intensity threshold |
| title | From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests |
| title_full | From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests |
| title_fullStr | From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests |
| title_full_unstemmed | From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests |
| title_short | From Delay to Advance: The Impact of Increasing Drought on Autumn Photosynthetic Phenology in Subtropical and Tropical Forests |
| title_sort | from delay to advance the impact of increasing drought on autumn photosynthetic phenology in subtropical and tropical forests |
| topic | autumn phenology climate change SPEI subtropical and tropical forests drought intensity threshold |
| url | https://doi.org/10.1029/2024GL112054 |
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