Diminished biophysical cooling benefits of global forestation under rising atmospheric CO2 DOI Creative Commons
Fei Kan, Hao Xu, Shuchang Tang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 13, 2025

Forestation is a proposed solution for mitigating global warming through carbon sequestration. However, its biophysical effects surface energy modulation, particularly under rising CO2 levels, less understood. Here we investigate the of potential forestation on near-surface air temperature (Ta) increasing concentrations using land-atmosphere coupled model with slab ocean module. Our findings reveal that, current climate conditions, effect full-potential can reduce land Ta by 0.062 °C globally. this cooling benefit diminishes as rises. While elevated slightly alters evaporative local via stomatal closure and adjustments in forestation-driven rainfall regimes, dominant reduction stems from non-local mechanisms. Background shifts reorganize forestation-induced horizontal advection, weakening remote Northern Hemisphere. These highlight necessity incorporating dynamic forest management strategies to optimize mitigation changing climate.

Language: Английский

Evidence for the acclimation of ecosystem photosynthesis to soil moisture DOI Creative Commons
Jinlong Peng, Jiwang Tang, Shudi Xie

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 12, 2024

Ecosystem gross primary productivity (GPP) is the largest carbon flux between atmosphere and biosphere strongly influenced by soil moisture. However, response acclimation of GPP to moisture remain poorly understood, leading large uncertainties in characterizing impact on Earth system models. Here we analyze GPP-soil curves at 143 sites from global FLUXNET. We find that 108 exhibits hump-shaped with increasing moisture, an apparent optimum ( $${{\rm{SM}}}^{{\rm{GPP}}}_{{\rm{opt}}}$$ , which reaches maximum) exists widely variability among biomes around globe. Variation mostly explained local water availability, drier ecosystems having lower than wetter ecosystems, reflecting . This further supported a field experiment only manipulates keeps other factors constant, shows downward shift after long-term deficit, thus requirement maximize GPP. These results provide compelling evidence for widespread its acclimation, shedding new light understanding predicting carbon-climate feedbacks. study provides ecosystem photosynthesis conditions,

Language: Английский

Citations

12
The poorly‐explored stomatal response to temperature at constant evaporative demand DOI
C. M. Mills, Megan K. Bartlett, Thomas N. Buckley

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(9), P. 3428 - 3446

Published: April 11, 2024

Changes in leaf temperature are known to drive stomatal responses, because the leaf-to-air water vapour gradient (Δw) increases with if ambient pressure is held constant, and stomata respond changes Δw. However, direct response of (DRST; when Δw constant by adjusting humidity) has been examined far less extensively. Though meagre available data suggest usually positive, results differ widely defy broad generalisation. As a result, little about DRST. This review discusses current state knowledge DRST, including numerous hypothesised biophysical mechanisms, potential implications for plant adaptation, possible impacts DRST on plant-atmosphere carbon exchange changing climate.

Language: Английский

Citations

10
Litter decomposition rate response to multiple global change factors: A meta-analysis DOI

Yalan Liu,

Ailin Zhang, Xiangyi Li

et al.

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 195, P. 109474 - 109474

Published: May 13, 2024

Language: Английский

Citations

9
Potential decoupling of CO2 and Hg uptake process by global vegetation in the 21st century DOI Creative Commons

Tengfei Yuan,

Shaojian Huang,

Peng Zhang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 27, 2024

Abstract Mercury (Hg), a potent neurotoxin posing risks to human health, is cycled through vegetation uptake, which susceptible climate change impacts. However, the extent and pattern of these impacts are largely unknown, obstructing predictions Hg’s fate in terrestrial ecosystems. Here, we evaluate effects on elemental Hg [Hg(0)] uptake using state-of-the-art global model (CLM5-Hg) that incorporates plant physiology. In business-as-usual scenario, Hg(0) sink predicted decrease by 1870 Mg yr −1 2100, ~60% lower than present-day condition. We find potential decoupling between trends CO 2 assimilation process 21st century, caused decreased stomatal conductance with increasing . This implies substantial influx into aquatic ecosystems, an elevated threat warrants consideration during evaluation effectiveness Minamata Convention.

Language: Английский

Citations

7
Plant nitrogen uptake preference and drivers in natural ecosystems at the global scale DOI
Jinhua Mao, Jinsong Wang, Jiaqiang Liao

et al.

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

Summary Elucidating plant nitrogen (N) acquisition is crucial for understanding N strategies and ecosystem productivity. However, the variation in uptake preference its controlling factors on a global scale remain unclear. We conducted synthesis to explore patterns driving factors. Globally, average contributions of ammonium (NH 4 + ), nitrate (NO 3 − glycine total were 41.6 ± 1.1%, 32.8 1.2%, 25.6 0.9%, respectively. preferences differed significantly among climatic regions vegetation types. Soil NH was most preferred form by plants (sub)tropical regions, whereas NO higher high‐latitude than low‐latitude regions. Plant functional type one important preference, with nonwoody species broadleaf‐evergreen, conifer, shrub species. Organic lowest (sub)tropics lower that temperate alpine This study shows clear different influencing which can contribute accurate prediction constraints productivity soil carbon dynamics.

Language: Английский

Citations

1
Divergent Responses of CH4 Emissions and Uptake to Global Change Drivers DOI Creative Commons
Tingting Zhu, Yanlian Zhou, Jing M. Chen

et al.

Global Biogeochemical Cycles, Journal Year: 2025, Volume and Issue: 39(3)

Published: March 1, 2025

Abstract Global changes strongly affect methane (CH 4 ) emissions and uptake. However, it is unclear how CH uptake across rice paddy fields, uplands, natural wetlands are affected by global change drivers, including nitrogen (N) addition, elevated carbon dioxide (eCO 2 ), warming (W), precipitation (P). Here, we collected 1,250 observations of manipulated experiments from 303 publications during 1980–2020, encompassing 1,154 single‐factor 96 two‐paired experiments, analyzed the effects drivers on Results showed were stimulated eCO , W, increased P (IP). was inhibited N IP but significantly enhanced W decreased P. The combined four (−9[−12, −6] %) (13[7, 19] %). Two‐factor interactions reduced (−15[−27, −1] insignificantly (−10[−19, 0] interactive any two mostly antagonistic. Random forest analysis indicated that important factors affecting responses or to different varied. structural equation model confirmed climate, soil properties, wetness index consistently played a remarkable role in regulating drivers. This synthesis highlights an urgent need consider individual multiple for better understanding methane‐climate feedback.

Language: Английский

Citations

1
High night temperature stress on rice (Oryza sativa) – insights from phenomics to physiology. A review DOI
Awais Riaz,

Julie Thomas,

Hafiz Haider Ali

et al.

Functional Plant Biology, Journal Year: 2024, Volume and Issue: 51(6)

Published: May 30, 2024

Rice (Oryza sativa ) faces challenges to yield and quality due urbanisation, deforestation climate change, which has exacerbated high night temperature (HNT). This review explores the impacts of HNT on physiological, molecular agronomic aspects rice growth. Rise in minimum threatens a potential 41% reduction by 2100. disrupts growth stages, causing reduced seed germination, biomass, spikelet sterility poor grain development. Recent findings indicate 4.4% decline for every 1°C increase beyond 27°C, with japonica ecotypes exhibiting higher sensitivity than indica. We examine relationships between elevated CO2 , nitrogen regimes HNT, showing that complexity balancing positive effects biomass challenges. Nitrogen enrichment proves crucial during vegetative stage but causes disruption reproductive affecting starch synthesis. Additionally, we elucidate impact plant respiration, emphasising mitochondrial photorespiration antioxidant responses. Genomic techniques, including CRISPR-Cas9, offer manipulating genes tolerance. Plant hormones carbohydrate enzymatic activities are explored, revealing their intricate roles fertility, size metabolism under HNT. Gaps understanding genetic factors influencing heat tolerance trade-offs associated hormone applications remain. The importance interdisciplinary collaboration is needed provide holistic approach. Research priorities include study regulatory mechanisms, post-anthesis effects, cumulative exposure interaction variability research direction enhance resilience changing climate.

Language: Английский

Citations

6
Unravelling the neglected role of ultraviolet radiation on stomata: A meta‐analysis with implications for modelling ecosystem–climate interactions DOI Creative Commons
Alexander Ač, Marcel A. K. Jansen,

J. Grace

et al.

Plant Cell & Environment, Journal Year: 2024, Volume and Issue: 47(5), P. 1769 - 1781

Published: Feb. 5, 2024

Stomata play a pivotal role in regulating gas exchange between plants and the atmosphere controlling water carbon cycles. Accordingly, we investigated impact of ultraviolet-B radiation, neglected environmental factor varying with ongoing global change, on stomatal morphology function by Comprehensive Meta-Analysis. The overall UV effect at leaf level is to decrease conductance, aperture size, although density was increased. significant decline conductance marked (6% trees >10% grasses herbs) short-term experiments, more modest decreases noted long-term studies. Short-term experiments growth chambers are not representative field effects conductance. Important consequences altered hypothesized. In short term, UV-mediated closure may reduce uptake but also loss through transpiration, thereby alleviating deleterious drought. However, long complex changes aperture, sequestration capacity increase vegetation land surface temperatures, potentially exacerbating negative drought and/or heatwaves. Therefore, expected future strength sink high-UV regions likely overestimated.

Language: Английский

Citations

5
Drought-induced ecosystem resistance and recovery observed at 118 flux tower stations across the globe DOI

Xingmin Shao,

Yongqiang Zhang, Ning Ma

et al.

Agricultural and Forest Meteorology, Journal Year: 2024, Volume and Issue: 356, P. 110170 - 110170

Published: July 27, 2024

Language: Английский

Citations

5
Stomatal development in the changing climate DOI Creative Commons
Li Cong Chua, On Sun Lau

Development, Journal Year: 2024, Volume and Issue: 151(20)

Published: Oct. 15, 2024

ABSTRACT Stomata, microscopic pores flanked by symmetrical guard cells, are vital regulators of gas exchange that link plant processes with environmental dynamics. The formation stomata involves the multi-step progression a specialized cell lineage. Remarkably, this process is heavily influenced factors, allowing plants to adjust stomatal production local conditions. With global warming set alter our climate at an unprecedented pace, understanding how factors impact development and fitness becoming increasingly important. In Review, we focus on effects carbon dioxide, high temperature drought – three tightly linked development. We summarize response variety species highlight existence species-specific adaptations. Using model Arabidopsis, also provide update molecular mechanisms involved in mediating plasticity Finally, explore knowledge being applied generate crop varieties optimized traits enhance their resilience against change maintain agricultural productivity.

Language: Английский

Citations

5