Impacts of record-breaking compound heatwave and drought events in 2022 China on vegetation growth

Agricultural and Forest Meteorology, Journal Year: 2023, Volume and Issue: 344, P. 109799 - 109799

Published: Nov. 10, 2023

Language: Английский

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Higher vegetation sensitivity to meteorological drought in autumn than spring across European biomes

Communications Earth & Environment, Journal Year: 2023, Volume and Issue: 4(1)

Published: Aug. 25, 2023

Abstract Europe has experienced severe drought events in recent decades, posing challenges to understand vegetation responses due diverse distribution, varying growth stages, different characteristics, and concurrent hydroclimatic factors. To analyze response meteorological drought, we employed multiple indicators across European biomes. Our findings reveal that sensitivity increases as the canopy develops throughout year, with sensitivities from −0.01 spring 0.28 autumn drought-susceptible areas 18.5 57.8% Europe. Soil water shortage exacerbates vegetation-drought temporally, while its spatial impact is limited. Vegetation-drought strongly correlates vapor pressure deficit partially atmospheric CO 2 concentration. These results highlight spatiotemporal variations influence of The enhance our understanding factors, providing valuable sub-seasonal information for management preparedness.

Language: Английский

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Diverse responses of gross primary production and leaf area index to drought on the Mongolian Plateau

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 902, P. 166507 - 166507

Published: Aug. 22, 2023

Language: Английский

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Understanding the effects of flash drought on vegetation photosynthesis and potential drivers over China

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 931, P. 172926 - 172926

Published: May 1, 2024

Language: Английский

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Impact of extreme seasonal drought on ecosystem carbon‒water coupling across China

Advances in Climate Change Research, Journal Year: 2024, Volume and Issue: 15(5), P. 914 - 923

Published: Aug. 12, 2024

Water use efficiency (WUE) is a critical evaluation indicator of ecosystem responses to climate change and its extremes. However, the influence timing extreme drought on variation WUE under severe water stress has not been studied extensively. In particular, modulation impacts regional hydro-climatic conditions biome types poorly understood. Considering observation-based flux index datasets, this study examined impact seasonal in China attempted reveal underlying drivers variations impacts. Results showed that direction magnitude depend occurrence time dynamics ecological climatic conditions. Across vegetated regions China, most widespread reduction was observed summer, whereas approximately 60% area positive changes spring. Furthermore, co-regulation characteristics background environmental determining highlighted. Classification regression tree analysis results illustrate leaf (LAI) dominated response China. Regions with lower LAI experienced more serious reductions drought. These findings indicate importance accounting for interaction between seasonality features assessing impacts, thus contributing improving modelling terrestrial extremes global warming.

Language: Английский

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Rising temperature increases the response time of LAI and GPP to meteorological drought in China

Atmospheric Research, Journal Year: 2025, Volume and Issue: unknown, P. 107989 - 107989

Published: Feb. 1, 2025

Language: Английский

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Divergent responses of subtropical evergreen and deciduous forest carbon cycles to the summer 2022 drought

Environmental Research Letters, Journal Year: 2024, Volume and Issue: 19(5), P. 054043 - 054043

Published: April 22, 2024

Abstract Ongoing shifts in climate, especially extreme drought, is posing considerable threats to the forest carbon uptake worldwide. In China, summer 2022 was warmest and driest since beginning of meteorological measurements. This study synthesized tower-based fluxes climate data from two subtropical evergreen deciduous ecosystems investigate effects such drought. Interestingly, net ecosystem production (NEP = −NEE) only exhibited a slight decrease at while it even enhanced during Further analysis revealed that although reductions gross primary productivity (GPP) respiration ( R e ) were found both sites, larger than GPP led stronger NEP compared previous year. However, sharply reduced following 2023, which can be ascribed legacy The results multiple linear regression soil water content (SWC) recognized as driver , downwelling shortwave radiation g regulated variability 2022. Across these including GPP, NEP, resistance, whereas showed resilience. All analyses emphasized diverse adaptive strategies among vegetation types, acted an important role assessing sequestration face future change.

Language: Английский

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Spatiotemporal characteristics of Net Ecosystem Exchange in the Beijing-Tianjin sand source region and its response to drought

CATENA, Journal Year: 2024, Volume and Issue: 242, P. 108076 - 108076

Published: May 6, 2024

Language: Английский

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Quantifying the drivers of terrestrial drought and water stress impacts on carbon uptake in China

Agricultural and Forest Meteorology, Journal Year: 2023, Volume and Issue: 344, P. 109817 - 109817

Published: Nov. 17, 2023

Language: Английский

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Impacts of Extreme Drought Events at Different Phenophases on the Aboveground Net Primary Productivity (Anpp) and its Photosynthetic Physiological Regulatory Process of Artemisia Ordosica

Published: Jan. 1, 2025

Climate change has intensified the frequency of extreme drought events in desert ecosystems, accompanied by uneven distribution annual precipitation. Whether precipitation at different phenophases have equivalent impacts on plants is an unverified topic, yet it crucial for understanding mechanisms vegetation adaptation to changes This study focuses typical plant Artemisia ordosica and employs situ control experiments using rain shelters simulate (30 consecutive days removal) three phenophases: sprouting stage, vegetative growth flowering fruiting stage. Against this backdrop, phenological differences leaf photosynthetic physiological regulatory that affect accumulation Aboveground Net Primary Productivity (ANPP) A. under were explored, including parameters such as gas exchange, chlorophyll fluorescence, antioxidant enzymes. The findings reveal that: (1) Extreme markedly reduced photosynthesis leaves, subsequently leading significantly reduction ANPP (p<0.05). With impact degree ordered follows: stage > stage; (2) During events, experiences a decrease exchange capacity enhancement water use efficiency, which are stomatal responses. Additionally, there increase thermal dissipation, decline photochemical activity (such potential PSII, initial light energy conversion actual quantum yield, quenching), augmentation enzyme system, non-stomatal responses; (3) phenophases, dominant factor rate leaves regulation. However, sensitivity regulation during more sensitive compared other phenophases. Non-stomatal most with heightened modulation fluorescence. reveals response offering innovative perspective ecological ecosystems face climate change.

Language: Английский

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