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Climate Change Drove the Decline in Yangtze Estuary Net Primary Production Over the Past Two Decades

文献类型：期刊论文

作者Wang, Mingrui1,2; Sun, Kun2; Jia, Junjie2; Wu, Fan2; Gao, Yang1,2
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2024-10-15
卷号N/A
关键词net primary production anthropogenic impacts C sink climate change estuarine-offshore continuum
DOI10.1021/acs.est.4c07163
产权排序1
英文摘要Net primary productivity (NPP) is highly sensitive to multiple stressors under progressive and intensifying climate change and anthropogenic impacts. The importance of understanding spatiotemporal distribution patterns and the associated driving factors that govern estuary NPP is paramount for regional carbon (C) budget assessments. Using a combined remote sensing and machine learning (ML) approach, the average NPP of the Yangtze Estuarine-offshore continuum (YEOC) was measured at 273.19 +/- 21.26 mgC m-2 day-1 over the past two decades. Temporally, NPP exhibited a significant downward trend between 2002 and 2022. Climate factors (climate fluctuations, sea level rise, and discharge) drove phytoplankton biomass (Chl-a) while light conditions (PAR and K d490) affected photosynthesis rates. Together, they can explain 65% of the NPP variation. Anthropogenic disturbances (i.e., damming and nutrient emissions) were not significant. Additionally, changes in NPP decreased phytoplankton C sequestration rates from 11.9 to 10.4 Tg C year-1, reducing the estuary's C sink capacity, which relies on biological C fixation. This study highlights the climate's influence on the spatiotemporal transformation of YEOC NPP while enhancing our understanding of the response of EOC C budgets to climate change and anthropogenic activities.
WOS关键词EAST CHINA SEA ; PHYTOPLANKTON GROWTH ; RIVER ESTUARY ; WATER ; CO2
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS记录号WOS:001333298500001
源URL[http://ir.igsnrr.ac.cn/handle/311030/208208]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Gao, Yang
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Mingrui,Sun, Kun,Jia, Junjie,et al. Climate Change Drove the Decline in Yangtze Estuary Net Primary Production Over the Past Two Decades[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,N/A.
APA Wang, Mingrui,Sun, Kun,Jia, Junjie,Wu, Fan,&Gao, Yang.(2024).Climate Change Drove the Decline in Yangtze Estuary Net Primary Production Over the Past Two Decades.ENVIRONMENTAL SCIENCE & TECHNOLOGY,N/A.
MLA Wang, Mingrui,et al."Climate Change Drove the Decline in Yangtze Estuary Net Primary Production Over the Past Two Decades".ENVIRONMENTAL SCIENCE & TECHNOLOGY N/A(2024).

入库方式： OAI收割

来源：地理科学与资源研究所

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