Influences of climatic variation and human activities on vegetation photosynthesis dynamics in Southwest China

Photosynthesis is a direct route for carbon sequestration in vegetation, and is influenced by climatic variation (CV) and human activities (HA). Therefore, a quantitative assessment of their influence on vegetation photosynthesis dynamics is pivotal for formulating effective carbon neutrality strate...

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Bibliographic Details
Published in:Journal of environmental management 2024-11, Vol.370, p.122879, Article 122879
Main Authors: Su, Jingxuan, Fan, Liangxin, Yuan, Zhanliang, Wang, Zhijun, Niu, Haipeng
Format: Article
Language:English
Subjects:
Carbon Sequestration
China
Chlorophyll - metabolism
Climate
Climatic variation
Human Activities
Humans
Photosynthesis
Southwest China
Time effects
Vegetation photosynthesis
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Summary:Photosynthesis is a direct route for carbon sequestration in vegetation, and is influenced by climatic variation (CV) and human activities (HA). Therefore, a quantitative assessment of their influence on vegetation photosynthesis dynamics is pivotal for formulating effective carbon neutrality strategies. Herein, based on the solar-induced chlorophyll fluorescence index (SIF), which reflects the vegetation photosynthesis intensity, and TerraClimate meteorological data, we refined the residual trend approach by incorporating more climatic variables and their time effects on vegetation to assess the influences of CV and HA on SIF dynamics in Southwest China. Our results revealed that an increasing rate of vegetation SIF across Southwest China of 0.0312 Wm−2μm−1sr−1/10a (p 
ISSN:0301-4797
1095-8630
1095-8630
DOI:10.1016/j.jenvman.2024.122879