The responses of ecosystem water use efficiency to CO2, nitrogen deposition, and climatic drivers across China

Cai, Xitian; Li, Luyi; Fisher, Joshua B.; Zeng, Zhenzhong; Zhou, Sha; Tan, Xiaoheng; Liu, Bingjun; Chen, Xiaohong

doi:10.1016/j.jhydrol.2023.129696

Cited by 12 publications

(1 citation statement)

References 68 publications

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“…The GPP dataset were developed based on the satellite-based near-infrared reflectance of vegetation (NIRv) (Wang et al, 2021). The accuracy and reliability have been validated by many studies (Cai et al, 2023;Feng et al, 2023;Li et al, 2023;Peng et al, 2023;Xing et al, 2023). For consistency, the above data were bilinearly interpolated to 0.25°×0.25°.…”

Section: Climate and Gpp Datamentioning

confidence: 99%

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China

Chen,

Guo,

et al. 2024

Preprint

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Abstract. Ecosystem Water Use Efficiency (WUE) is pivotal for understanding the carbon-water cycle interplay. Current research seldom addresses how WUE might change under future elevated CO2 concentrations, limiting understanding of regional ecohydrological effects. We present a land-atmosphere attribution framework for WUE in the Yellow River Basin (YRB), integrating the Budyko model with global climate models (GCMs) to quantify the impacts of climate and underlying surface changes induced by CO2. Additionally, we further quantitatively decoupled the direct and secondary impacts of CO2 radiative and biogeochemical effects. Attribution results indicate that WUE in the YRB is projected to increase by 0.36–0.84 gC·kg-1H2O in the future, with climate change being the predominant factor (relative contribution rate of 77.9–101.4 %). However, as carbon emissions intensify, the relative importance of land surface changes becomes increasingly important (respective contribution rates of -1.4 %, 14.9 %, 16.9 %, and 22.1 % in SSP126, SSP245, SSP370, SSP585). Typically, WUE is considered a reflection of an ecosystem's adaptability to water stress. Thus, we analyzed the response of WUE under different scenarios and periods and various drought conditions. The results show a distinct "two-stage" response pattern of WUE to drought in the YRB, where WUE increases under moderate-severe drought conditions but decreases as drought intensifies across most areas. Furthermore, GCM projections suggest that plant adaptability to water stress may improve under higher carbon emission scenarios. Our findings enhance understanding of regional ecohydrological processes and provide insights for future predictions of drought impacts on terrestrial ecosystems.

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Section: Climate and Gpp Datamentioning

confidence: 99%

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China

Chen,

Guo,

et al. 2024

Preprint

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Observed divergence in the trends of temperature controls on Chinese ecosystem water use efficiency

Xu,

Jiao,

Gong

et al. 2023

Ecological Indicators

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Inter- and intra-annual variability and climatic responses of ecosystem water use efficiency in a cool-temperate freshwater wetland

Li,

Yuan,

Liu

et al. 2024

Ecological Indicators

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The responses of ecosystem water use efficiency to CO2, nitrogen deposition, and climatic drivers across China

Cited by 12 publications

References 68 publications

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China

Observed divergence in the trends of temperature controls on Chinese ecosystem water use efficiency

Inter- and intra-annual variability and climatic responses of ecosystem water use efficiency in a cool-temperate freshwater wetland

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The responses of ecosystem water use efficiency to CO2, nitrogen deposition, and climatic drivers across China

Cited by 12 publications

References 68 publications

Future response of ecosystem water use efficiency to CO2 effects in the Yellow River Basin, China

Future response of ecosystem water use efficiency to CO2 effects in the Yellow River Basin, China

Observed divergence in the trends of temperature controls on Chinese ecosystem water use efficiency

Inter- and intra-annual variability and climatic responses of ecosystem water use efficiency in a cool-temperate freshwater wetland

Contact Info

Product

Resources

About

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China

Future response of ecosystem water use efficiency to CO₂ effects in the Yellow River Basin, China