Plant Water δD and δ<sup>18</sup>O of Tundra Species from West Greenland

Bush, Rosemary T.; Berke, Melissa A.; Jacobson, Andrew D.

doi:10.1657/aaar0016-025

Cited by 23 publications

(17 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Water 2019, 11, x FOR PEER REVIEW 2 of 13 environment [13]. Recently, those aspects, including the evaporation fractionation intensity of soil water, the transpiration rate of plant leaves, and the varying water utilization of plants at different ages in the desert-oasis ecotone have also been explored [12,14,15].…”

Section: Study Areamentioning

confidence: 99%

“…Soil water is recharged by precipitation, and plants uptake water for their growth from different soil depths [10,11]. The plant xylem water and leaf water are also vital components of the water cycle; their isotopic variation can reflect valuable information concerning the interactions between plants and the surrounding environment [13]. Recently, those aspects, including the evaporation fractionation intensity of soil water, the transpiration rate of plant leaves, and the varying water utilization of plants at different ages in the desert-oasis ecotone have also been explored [12,14,15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

Che

Zhang

Argiriou

et al. 2019

Water

View full text Add to dashboard Cite

Understanding the isotopic composition and interrelations of different water bodies at the soil–plant–atmosphere continuum (SPAC) is crucial to reveal the processes and mechanisms of regional water cycles. Rainfall, river water, plant, and soil samples from Lanzhou City, China, were collected from April to October 2016. The hydrogen (δ2H) and oxygen (δ18O) of the local precipitation, river water, soil water, plant xylem water, and leaf water were determined. We found that trees mainly uptake the middle (30–60 cm) and deep (60–100 cm) layer soil water during the growing season, and the shrubs mainly uptake the middle soil water. All herbs uptake the shallow soil water (0–30 cm) during the growing season. The δ18O of shallow soil water was found to be isotopic-enriched because of evaporation and exhibited a decline from the shallow soil layer towards the deeper layer. The variation of δ18O and soil water content (SWC) was remarkable in shallow soil, which was mainly due to evaporation and precipitation infiltration, while water in the middle and deep layer was less affected by these phenomena.

show abstract

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

Che

Zhang

Argiriou

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…Investigation of the slope of the δ 18 O vs δ D regression line is a widely used technique in isotope hydrology (Clark and Fritz, 1997; Earman and others, 2006; Lee and others, 2010a; Bush and others, 2017). This slope from the regression line provides information about whether water has experienced significant evaporation, sublimation and isotopic exchange between liquid water, ice and water vapor (Earman and others, 2006; Zhou and others, 2008a, 2008b; Lee and others, 2009; Sokratov and Golubev, 2009; Lee, 2014).…”

Section: Discussionmentioning

confidence: 99%

Isotopic variations of meltwater from ice by isotopic exchange between liquid water and ice

et al. 2019

View full text Add to dashboard Cite

Predicting the isotopic modification of ice by melting processes is important for improving the accuracy in paleoclimate reconstruction. To this end, we present results from cold room laboratory observations of changes in the isotopic ratio (D/H and 18O/16O) of ice cubes by isotopic exchange between liquid water and ice in nearly isothermal conditions. A 1-D model was fit to the isotopic results by adjusting the values of two parameters, the isotopic exchange rate constant (kr) and the fraction of ice participating in the exchange (f). We found that the rate constant for hydrogen isotopic exchange between liquid water and ice may be greater (up to 40%) than that for the oxygen isotopic exchange. The range of the rate constant obtained from four melt experiments is from 0.21 to 0.82 h–1. The model results also suggest that f decreases with the increasing wetness of the ice. This is because with increasing water saturation in ice, water may be present only in the small pores or some of the water that was exchanged with ice may be bypassed, decreasing the effective surface area over which the isotopic exchange can occur. The relationship between the two water isotopes (δ18O vs δD) was observed and modeled and the slope was <8, which is significantly different from the slope of the meteoric waterline. We note that these slopes were obtained without considering the sublimation process.

show abstract

“…The δ 13 C values were recorded using Sercon20‐22 stable isotope mass spectrometer, each sample was weighed by sensitive balance and the mass was controlled to be 200 ± 10 μg. The δ D, δ 18 O, and δ 13 C values can be calculated by the following equation 18 :

italicδA = ((), R_{sample} / R_{standard} - 1) \times 1000

where δA is the δD or δ 18 O value of branch water or soil water or δ 13 C value of leaves, R sample is the ratio of D/H or 18 O/ 16 O or 13 C/ 12 C, R standard is the ratio of D/H or 18 O/ 16 O or 13 C / 12 C of standard sample. The final calculation results of hydrogen, oxygen, and carbon isotopes were based on standard mean ocean water and international standard substance (PDB).…”

Section: Methodsmentioning

confidence: 99%

“…The δ 13 C values were recorded using Sercon20-22 stable isotope mass spectrometer, each sample was weighed by sensitive balance and the mass was controlled to be 200 ± 10 μg. The δD, δ 18 O, and δ 13 C values can be calculated by the following equation 18 :…”

Section: Sample Treatmentmentioning

confidence: 99%

Analysis on water use strategies of natural poplar in Hunshandake Sandy Land, China

Jia

Zhang

et al. 2021

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The past decades have witnessed the increasingly severe desertification and high sandstorm frequency in Hunshandake desert, China, which evokes extensive concern regarding the ecological and environmental effects on natural plant fields. Herein, natural poplars in this area are studied in this work to analyze the water use efficiency (WUE), water absorption source (WAS), water consumption of poplar, and water use strategy (WUS). The results show that the intrinsically high WUE of poplar can be enhanced under water stress status. The 0–100 cm soil water or underground water constitutes the main WAS. Poplar uses deep soil water or underground water when there is insufficient precipitation in rainy season, which, however, turns to use easily‐absorbed precipitation water after rainfall and lives through the growing period by switching water absorption positions. The unique dimorphic root system, adjustable WUE, and adjustable WUS make poplar able to maximally use limited water resource, which is also the main strategy for its survival in arid and semi‐arid areas. The combined analyses help us to get insight into the survivability and adaptive ability of plants as well as to regulate the limited water resource. This work may pave a way for ecological community restoration and ecologically environmental improvement.

show abstract

Plant Water δD and δ¹⁸O of Tundra Species from West Greenland

Cited by 23 publications

References 97 publications

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

Isotopic variations of meltwater from ice by isotopic exchange between liquid water and ice

Analysis on water use strategies of natural poplar in Hunshandake Sandy Land, China

Contact Info

Product

Resources

About

Plant Water δD and δ18O of Tundra Species from West Greenland

Cited by 23 publications

References 97 publications

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

The Stable Isotopic Composition of Different Water Bodies at the Soil–Plant–Atmosphere Continuum (SPAC) of the Western Loess Plateau, China

Isotopic variations of meltwater from ice by isotopic exchange between liquid water and ice

Analysis on water use strategies of natural poplar in Hunshandake Sandy Land, China

Contact Info

Product

Resources

About

Plant Water δD and δ¹⁸O of Tundra Species from West Greenland