Open research questions in Plant Water Relations and Carbon Dynamics
1,190 gap statements mined from Plant Water Relations and Carbon Dynamics papers in our 7.9M-paper local library, which holds 5,046 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.
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What the literature leaves open
Limited information is available on short-term sap velocity responses of dominant dry tropical tree species. The relative influence of rainfall pulses and atmospheric demand on transpiration regulation in deciduous and semi-evergreen tree species remains insufficiently understood.
Interaction of rainfall events and atmospheric demand regulates sap velocity in dry-land trees · 2026 · DOIGap-filling of missing carbon flux values is a challenge. The study had to account for the impact of drought on crop yields and carbon fluxes.
Carbon Flux Dynamics in Rice–Wheat Systems Across Contrasting Climatic Regimes of Northern India Based on Eddy Covariance Measurements · 2026 · DOIThe study does not provide a comprehensive analysis of the impact of drought on carbon fluxes. The study only considers two study areas, which may not be representative of the entire region. The study relies on empirical modelling approaches for gap-filling, which may introduce uncertainty.
Carbon Flux Dynamics in Rice–Wheat Systems Across Contrasting Climatic Regimes of Northern India Based on Eddy Covariance Measurements · 2026 · DOIThe relative roles of soil moisture and vapor pressure deficit in regulating ecosystem productivity remain unclear. There is a lack of understanding of the spatial patterns of soil moisture and vapor pressure deficit dominance and their associated thresholds across biomes.
Impacts of Soil and Atmospheric Dryness on Terrestrial Vegetation Productivity in Southwest China: Dominant Roles, Critical Thresholds, and Pathways · 2026 · DOIThe understanding of ecosystem productivity in terms of resistance and resilience to extreme climate disturbances on the Tibetan Plateau is limited. Prior research has focused on gradual long-term climate change rather than extreme events.
Analysis of the Spatial Patterns of Resistance and Resilience of the Tibetan Plateau Ecosystem to Extreme Temperature Based on Carbon Fluxes · 2026 · DOIThe lack of understanding of how ecosystems maintain or lose stability under climate stress. The need to incorporate vegetation functional types and extreme weather event timing into ecosystem models. The gap in current research on the impact of weather extremes on ecosystem stability in tallgrass prairie and juniper woodland.
Sequence and Seasonal Timing of Weather Extremes Influence Ecosystem Stability in Tallgrass Prairie and Juniper Woodland · 2026 · DOISmall replication and statistical power limit causal inference. Management × trait confounding is a challenge in smallholder landscapes. The study identifies the need for increased replication and mixed-effects models to formally test proposed pathways.
Plant Functional Traits Are Associated with Canopy-to-Soil Hydrological Regulation in Tropical Forests: Evidence from Smallholder Plantations and Secondary Forests · 2026 · DOIThe combined effects of drought and salinity stress on halophytes are not well understood. There is a need to explore the salt tolerance mechanisms of halophytes for their potential use in arid areas.
Effect of Drought and Salinity on Water Relations and Photosynthetic Responses of Tamarix elongata and Haloxylon ammodendron in Wutonggou Desert Tourist Area, Northwest China · 2025 · DOILack of sufficient spatial coverage in conventional ET estimation methods. Difficulty in selecting representative weather data for!!!!! ET estimation. Uncertainty in internal calibrations of Landsat imagery resolution.
Canopy Transpiration Mapping in an Apple Orchard Using High-Resolution Airborne Spectral and Thermal Imagery with Weather Data · 2025 · DOIFurther research is needed to validate the UASM-1 approach for other crop types and environmental conditions. The use of other remote sensing platforms, such as satellites, should be explored. The integration of the UASM-1 approach with other data sources, such as soil moisture sensors, should be investigated.
Canopy Transpiration Mapping in an Apple Orchard Using High-Resolution Airborne Spectral and Thermal Imagery with Weather Data · 2025 · DOIThe lack of energy balance closure in real-world measurements. The underestimation of sensible and latent heat fluxes by the Eddy Covariance method. The need for a more precise model that considers the impact of relative humidity on temperature variations.
Effects of Relative Humidity on Temperature Dynamics in Natural Ecosystems: Comparison of Measured and Model-Predicted Data · 2025 · DOIThe implementation of afforestation and reforestation actions can lead to high soil carbon emissions for several years. The paper highlights the need to consider multiple factors, including local forest conditions, tree species, and soil characteristics, in achieving effective climate change mitigation through forests.
The impact of afforestation and reforestation on climate change mitigation is not fully understood, particularly in terms of the role of local forest conditions and strategic planning. There is a need for a comprehensive review of the cutting-edge knowledge on the role of forests in climate change mitigation.
Yet, persistent drought and water stress have degraded both pure and mixed forests, shifting their water use strategies; However, the underlying interaction mechanisms remain unclear.
Water Use Strategies of Pure Versus Mixed Plantations Under Degradation in Edge Shelterbelt of the Kubuqi Desert, China · 2026 · DOIHowever, the factors influencing the sensitivity of the carbon balance to temperature in boreal forests are still not well understood, especially over short timescales.
Boreal Forest Sensitivity to Temperature Is Jointly Regulated by Ecosystem Productivity and Seasonality: A Synthesis Based on Carbon Fluxes From FLUXNET Sites · 2026 · DOIThe trade‐off between leaf hydraulic efficiency and safety is among the principal theories explaining plant drought adaptation, but whether rhizobium inoculation modulates this trade‐off to enhance plant drought adaptation remains unclear.
Rhizobium Inoculation Enhances Drought Tolerance of Legume Species by Increasing Leaf Hydraulic Efficiency and Safety and Speeding Up Post‐Drought Recovery · 2026 · DOIWithin tree crowns, light decreases from the top downwards, but whether this translates to differences in the C balance of sun and shade branches remains unclear.
Similar Relative Carbon Costs for Construction and Storage of Sun and Shade Branches in Mature Temperate Trees · 2026 · DOIElastic adjustment enables turgor maintenance under drought, yet its potential as a reliable predictor of species‐level drought resistance remains controversial due to the static nature of traditional metrics.
Further, the approach is not limited by any clamp on sensors and as such enables multi-leaf tracking.
Non‐Invasive Estimation of Short‐Term Changes of Transpiration Using a Combination of 3D Imaging and Energy Balance Modelling · 2026 · DOIInvestigate hydraulic recovery, stomatal regulation, and species-specific drought adaptation strategies under increasingly variable climatic conditions, - Examine the interplay between different environmental and physiological factors governing…
Interaction of rainfall events and atmospheric demand regulates sap velocity in dry-land trees · 2026 · DOIExplore the relationship between the immediate impacts of individual extreme events and the long-term trends in their frequency and intensity, - Use higher temporal resolution to better track rapid ecosystem responses, - Extend the temporal scale to enhance understanding of lagged responses and potential feedback mechanisms in ecosystems under climatic disturbances, - Integrate temperature with other key climatic…
Analysis of the Spatial Patterns of Resistance and Resilience of the Tibetan Plateau Ecosystem to Extreme Temperature Based on Carbon Fluxes · 2026 · DOISmall replication and statistical power, - Management × trait confounding, - Routine weeding and litter removal in plantations are intrinsically confounded with species trait effects, - The study has only 3 plots per forest type, - The study lacks causal…
Plant Functional Traits Are Associated with Canopy-to-Soil Hydrological Regulation in Tropical Forests: Evidence from Smallholder Plantations and Secondary Forests · 2026 · DOIInvestigating the mechanisms driving the transition from SM to VPD control, - Examining the impacts of rising VPD on ecosystem resilience and the water-carbon cycles, - Developing more detailed models of vegetation responses to hydroclimatic…
The experiment was conducted in a controlled environment, - The study only examined six plant species, - The experiment was limited to a specific time…
Effects of Water Stress on Growth and Leaf Water Physiology of Major Plants in the Qaidam Basin · 2025 · DOIInvestigating the effects of water stress on other plant species, - Examining the long-term effects of water stress on plant growth and survival, - Studying the impact of water stress on plant communities…
Effects of Water Stress on Growth and Leaf Water Physiology of Major Plants in the Qaidam Basin · 2025 · DOI
Most-cited papers in Plant Water Relations and Carbon Dynamics
- Forests and Climate Change: Forcings, Feedbacks, and the Climate Benefits of Forests · Science · 2008 · 5,347 citations
- Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999 · Science · 2003 · 3,141 citations
- Sap Pressure in Vascular Plants · Science · 1965 · 2,980 citations
- Global convergence in the vulnerability of forests to drought · Nature · 2012 · 2,454 citations
- Drought-Induced Reduction in Global Terrestrial Net Primary Production from 2000 Through 2009 · Science · 2010 · 2,431 citations
- On underestimation of global vulnerability to tree mortality and forest die‐off from hotter drought in the Anthropocene · Ecosphere · 2015 · 2,234 citations
- Hydraulic Limits to Tree Height and Tree Growth · BioScience · 1997 · 954 citations
- A first assessment of the impact of the extreme 2018 summer drought on Central European forests · Basic and Applied Ecology · 2020 · 948 citations
- Soil moisture dominates dryness stress on ecosystem production globally · Nature Communications · 2020 · 748 citations
- Scaling carbon fluxes from eddy covariance sites to globe: synthesis and evaluation of the FLUXCOM approach · Biogeosciences · 2020 · 633 citations
Most recent work
- Higher carbon storage in primary than secondary boreal forests in Sweden · Science · 2026
- From growth potential to drought survival: a trait‐ and time‐based framework for plant water economics across vascular species · New Phytologist · 2026
- More than mitigation: The role of forests in climate adaptation · Science · 2026
- Soils drive convergence in the regulation of vascular tension in land plants · Science · 2026
- Dryland dominance in the slowdown of global vegetation carbon uptake · Nature Geoscience · 2026
- Increase in plant reliance on past precipitation associated with greening and drying · Nature Ecology & Evolution · 2026
- Shaping future forests: how can ecophysiology support climate‐smart forest management? · New Phytologist · 2026
- Canadian net forest CO2 uptake enhanced by heat drought via reduced respiration · Nature Geoscience · 2026
- Pervasive increase in tree mortality across the Australian continent · Nature Plants · 2026
- Human disturbance intensity reduces drought resistance without prolonging recovery in karst forests of southwest China · GIScience & Remote Sensing · 2026
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