Plant-groundwater interactions in drylands: A review of current research and future perspectives

Wang, Tianye; Wu, Zening; Wang, Ping; Wu, Tonghua; Zhang, Yichi; Yin, Jun; Yu, Jingjie; Wang, Huiliang; Guan, Xinjian; Xu, Hongshi; Yan, Dengming; Yan, Denghua

doi:10.1016/j.agrformet.2023.109636

Cited by 21 publications

(8 citation statements)

References 251 publications

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“…However, the coupling of the soil-plant-atmosphere is complex and might be affected by other environmental factors (e.g., groundwater) than those discussed here. 2 , 5 The integration of these important factors and processes would greatly enhance our understanding of the “deglacial forest conundrum” and contribute to more reliable modeling of the evolution of forest cover.…”

Section: The Mechanism By Which Soil Moisture Regulates the Evolution...mentioning

confidence: 99%

The crucial role of soil moisture in the evolution of forest cover in Asia since the Last Glacial Maximum

Cheng,

Liu

2024

The Innovation

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Section: The Mechanism By Which Soil Moisture Regulates the Evolution...mentioning

confidence: 99%

The crucial role of soil moisture in the evolution of forest cover in Asia since the Last Glacial Maximum

Cheng,

Liu

2024

The Innovation

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“…The infiltration rate of soil in the 0-10 cm layer gradually decreased with the increase in soil erosion, and the difference in infiltration rate of each soil layer in different vertical depths gradually decreased with the increase in soil erosion [49]. Therefore, the potential impact of arid region erosion on ecosystem carbon emissions mainly depends on the arid region balance between the increase in the soil respiration potential caused by warming and the diminution of vegetation photosynthesis in conjunction with the increase in the soil water content [52,53], which is supported by additional field data from the LP [54]. NEE is numerically equal to the difference between NPP and soil heterotrophic respiration.…”

Section: Potential Effects Of Climate Change On the Carbon Cyclementioning

confidence: 99%

Improving the Model Performance of the Ecosystem Carbon Cycle by Integrating Soil Erosion–Related Processes

Zhang,

et al. 2023

Atmosphere

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Soil erosion is a key factor in soil quality degradation and carbon balance in arid ecosystems. However, many models ignore the soil erosion process in arid regions, which may lead to limits in our understanding of ecosystem processes in arid regions. In this study, we added the soil erosion process according to field observed data of soil hydrothermal regimes and carbon flux. We validated this coupling version of IBIS (Integrated Biosphere Simulator) and RUSLE (RU–IBIS) by examining four different vegetation types and the carbon budget in the arid region on the Loess Plateau (LP). Our results indicated that the coupling model (RU–IBIS) produced more reliable simulations of the soil water content (with the r from 0.23–0.90 to 0.71–0.97) and evaporation (ET) (the average r was 0.76) and significantly improved the simulation of the leaf area index (LAI) (the average r was 0.95) and net primary production (NPP) (the average r was 0.95). We also conducted sensitivity experiments to determine how soil texture and aerodynamic roughness (Z0m) affect the soil water content. Moreover, it was revealed that specific leaf area (SLA) plays a key role in the simulation of NPP and NEE. Our study suggests that the coupled soil erosion process and parameterization can effectively improve the performance of IBIS in arid regions. These results need to be considered in future Earth system models.

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“…At the same time, stomatal closure leads to higher internal leaf temperatures and consequently increases the risk of heat stress when drought is accompanied by high temperatures (Blasini et al., 2022). However, groundwater provides a perennial water source that can buffer dryland riparian trees from the effects of atmospheric drought and rising temperatures (Wang et al., 2023). Therefore, consistent access to groundwater may represent the only feasible means of persistence for riparian trees in regions where droughts and warming are becoming more extreme with climate change.…”

Section: Introductionmentioning

confidence: 99%

Seasonal and Species‐Level Water‐Use Strategies and Groundwater Dependence in Dryland Riparian Woodlands During Extreme Drought

Williams,

Stella,

Singer

et al. 2024

Water Resources Research

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Drought‐induced groundwater decline and warming associated with climate change are primary threats to dryland riparian woodlands. We used the extreme 2012–2019 drought in southern California as a natural experiment to assess how differences in water‐use strategies and groundwater dependence may influence the drought susceptibility of dryland riparian tree species with overlapping distributions. We analyzed tree‐ring stable carbon and oxygen isotopes collected from two cottonwood species (Populus trichocarpa and P. fremontii) along the semi‐arid Santa Clara River. We also modeled tree source water δ18O composition to compare with observed source water δ18O within the floodplain to infer patterns of groundwater reliance. Our results suggest that both species functioned as facultative phreatophytes that used shallow soil moisture when available but ultimately relied on groundwater to maintain physiological function during drought. We also observed apparent species differences in water‐use strategies and groundwater dependence related to their regional distributions. P. fremontii was constrained to more arid river segments and ostensibly used a greater proportion of groundwater to satisfy higher evaporative demand. P. fremontii maintained ∆13C at pre‐drought levels up until the peak of the drought, when trees experienced a precipitous decline in ∆13C. This response pattern suggests that trees prioritized maintaining photosynthetic processes over hydraulic safety, until a critical point. In contrast, P. trichocarpa showed a more gradual and sustained reduction in ∆13C, indicating that drought conditions induced stomatal closure and higher water use efficiency. This strategy may confer drought avoidance for P. trichocarpa while increasing its susceptibility to anticipated climate warming.

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Plant-groundwater interactions in drylands: A review of current research and future perspectives

Cited by 21 publications

References 251 publications

The crucial role of soil moisture in the evolution of forest cover in Asia since the Last Glacial Maximum

The crucial role of soil moisture in the evolution of forest cover in Asia since the Last Glacial Maximum

Improving the Model Performance of the Ecosystem Carbon Cycle by Integrating Soil Erosion–Related Processes

Seasonal and Species‐Level Water‐Use Strategies and Groundwater Dependence in Dryland Riparian Woodlands During Extreme Drought

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