Young and new water fractions in soil and hillslope waters DOI Creative Commons
Marius G. Floriancic, Scott T. Allen, James W. Kirchner

et al.

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(18), P. 4295 - 4308

Published: Sept. 20, 2024

Abstract. The transport processes and corresponding timescales of water's infiltration into percolation through the shallow subsurface are poorly understood. Here, we characterize recent precipitation a forested hillslope using continuous 3-year record O H stable isotopes in precipitation, streamflow, soil waters from various depths. We found that fractions decreased with depth, both extracted suction-cup lysimeters bulk samples cryogenic distillation. Fractions soils streamflow were much larger wet antecedent conditions, showing landscapes can transmit quicker than dry landscapes. Approximately 18 % was younger 2–3 months, 11 3 weeks, 7 1 week; these new water similar to those seen 20 80 cm deep soils. Mobile below 2 m depth contained less (1.2 ± 0.4 weeks) did (12.3 2.1%), indicating they not dominant source streamflow. Instead, must be generated mixture waters, very little isotopic seasonality short-term variability, more pronounced variability. This study illustrates how flow, storage, mixing linking evapotranspiration constrained by measuring variability across different positions, depths, timescales.

Language: Английский

Coexisting plants restored in karst desertification areas cope with drought by changing water uptake patterns and improving water use efficiency DOI
Lulu Cai, Kangning Xiong, Yuan Li

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132813 - 132813

Published: Feb. 1, 2025

Language: Английский

Citations

0
Mutual Water Supply Existed Between the Root Systems of Tamarix ramosissima Ledeb. and Alhagi sparsifolia Shap. Under Extreme Drought Stress DOI Open Access
Aihong Fu, Yuhai Yang, Chenggang Zhu

et al.

Forests, Journal Year: 2025, Volume and Issue: 16(3), P. 482 - 482

Published: March 10, 2025

To explain one of the reasons why two adjacent deep-rooted desert plants can coexist over long periods, mutual water supply between species was investigated. The study focused on δD and δ18O stable isotopic characteristics root soil near roots Tamarix ramosissima Ledeb. Alhagi sparsifolia Shap. in Tarim River Basin China during growing season. direct comparison method Mix SIAR model were employed to analyze sources contribution rates each source. A similarity proportional index used assess hydraulic connections plant species. T. A. found at depths 40 90 cm 220 300 (a total rate 58.85%) 130 190 240 81.35%) with groundwater 2.5 3.0 m, respectively. When depth increased 4 for both 20 100 70.60%) 120 49.60%), Both could lift from deep or their own growth needs some other, which suggests that allowed achieve benefits coexistence through connections. These results enrich theoretical understanding provide a scientific basis vegetation restoration.

Language: Английский

Citations

0
Sub‐Daily Variations in Tree Xylem Water Isotopic Compositions in a Temperate Northeastern US Forest DOI

Kiernan Tierney,

Matthew Sobota,

Josh Snarski

et al.

Hydrological Processes, Journal Year: 2025, Volume and Issue: 39(4)

Published: April 1, 2025

ABSTRACT Sampling of stable isotopes in plant xylem water (δ 2 H, δ 18 O) has become a ubiquitous technique to study spatiotemporal variations the taken up by roots; however, open questions remain concerning most appropriate time day sample trees obtain representative isotopic values XYLEM ). We sampled oak and maple prior solar midday (i.e., recommended sampling window) then again after outside across 4 months. The paired root mean squared difference between AM PM O ranged from 1.00‰ 1.16‰ for maples 0.23‰ 2.55‰ oaks all dates. Xylem seasonal origin index (SOI) derived samples were significantly different, though both SOI estimates supported conclusion that reflected summer precipitation on conclude is significant consideration design campaigns; our findings also support flexibility collection field sites where during optimal challenging.

Language: Английский

Citations

0
Trait coordination and trade-offs constrain the diversity of water use strategies in Mediterranean woody plants DOI Creative Commons
Francisco Javier Muñoz Gálvez, José Ignacio Querejeta, Cristina Moreno‐Gutiérrez

et al.

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

Published: May 2, 2025

Language: Английский

Citations

0
Water competition among coexisting plants in rock-dominated habitats of subtropical karst desertification DOI
Lulu Cai, Kangning Xiong, Ziqi Liu

et al.

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 381, P. 109419 - 109419

Published: Dec. 6, 2024

Language: Английский

Citations

1
Young and new water fractions in soil and hillslope waters DOI Creative Commons
Marius G. Floriancic, Scott T. Allen, James W. Kirchner

et al.

Hydrology and earth system sciences, Journal Year: 2024, Volume and Issue: 28(18), P. 4295 - 4308

Published: Sept. 20, 2024

Abstract. The transport processes and corresponding timescales of water's infiltration into percolation through the shallow subsurface are poorly understood. Here, we characterize recent precipitation a forested hillslope using continuous 3-year record O H stable isotopes in precipitation, streamflow, soil waters from various depths. We found that fractions decreased with depth, both extracted suction-cup lysimeters bulk samples cryogenic distillation. Fractions soils streamflow were much larger wet antecedent conditions, showing landscapes can transmit quicker than dry landscapes. Approximately 18 % was younger 2–3 months, 11 3 weeks, 7 1 week; these new water similar to those seen 20 80 cm deep soils. Mobile below 2 m depth contained less (1.2 ± 0.4 weeks) did (12.3 2.1%), indicating they not dominant source streamflow. Instead, must be generated mixture waters, very little isotopic seasonality short-term variability, more pronounced variability. This study illustrates how flow, storage, mixing linking evapotranspiration constrained by measuring variability across different positions, depths, timescales.

Language: Английский

Citations

0