Using Stable Isotopes as Indicators, Tracers, and Recorders of Ecological Change

Dawson, Todd E.; Siegwolf, Rolf

doi:10.1016/b978-012373627-7/50003-2

Cited by 36 publications

(35 citation statements)

References 65 publications

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“…Stable isotopes and their potential application for detecting various and complex ecosystem processes are gaining the interest of an increasing number of scientists [8][9][10]. Stable isotopes are powerful tools for detecting water movement along the soil plant-atmosphere continuum system [11,12].…”

Section: Introductionmentioning

confidence: 99%

Stable Isotopic Analysis on Water Utilization of Two Xerophytic Shrubs in a Revegetated Desert Area: Tengger Desert, China

Huang¹,

Zhang²

2015

Water

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Stable isotope studies on stable isotope ratios of hydrogen and oxygen in water within plants provide new information on water sources and water use patterns under natural conditions. In this study, the sources of water uptake for two typical xerophytic shrubs, Caragana korshinskii and Artemisia ordosica, were determined at four different-aged revegetated sites (1956, 1964, 1981, and 1987) in the Tengger Desert, a revegetated desert area in China. Samples from precipitation, soil water at different soil layers, and xylem water from each species were collected in 2013. The proportion of plant water sources derived from different potential sources was determined using oxygen (δ 18 O) and hydrogen (δD) stable isotope analysis combined with a multiple-source linear mixing model. Results showed that the local meteoric water line (LMWL) at Shapotou was as follows: δD = 7.39δ 18O values varied with depth, and the variation decreased as the age of the revegetated site increased. In general, C. korshinskii and A. ordosica mainly tapped water from the upper soil layer (10-100 cm) during the wet seasons. With increasing sand stabilization age, the proportion of water sources from shallow soil water decreased, whereas deep soil moisture utilization increased. During the dry season, C. korshinskii and A. ordosica showed evident hierarchical utilization of soil water in different soil layers. Small rainfall events did not significantly affect the water source of C. korshinskii and A. ordosica. OPEN ACCESSWater 2015, 7 1031However, large rainfall events not only complemented the deep soil moisture, but also recharged the shallow soil water after a few days, and the proportion of soil water source from deep soil layer increased from 2% ± 0.7% to 10% ± 1.4% for both plants.

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Section: Introductionmentioning

confidence: 99%

Stable Isotopic Analysis on Water Utilization of Two Xerophytic Shrubs in a Revegetated Desert Area: Tengger Desert, China

Huang¹,

Zhang²

2015

Water

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“…Over recent decades, stable carbon isotopes (δ 13 C) from terrestrial archives have been used to trace the course of past climatic and environmental changes (Dawson and Siegwolf, 2007;Werner et al, 2012). This is because variations in plant carbon isotope values record a lot of information reflecting past climatic and environmental changes such as temperature, humidity, and precipitation (Saurer et al, 1995;Loader et al, 2007;Dodd et al, 2008;Diefendorf et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Responses of carbon isotope ratios of C_3 herbs to humidity index in northern China

Liu¹,

Su²,

Li³

et al. 2014

Turkish J Earth Sci

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“…The ratio of 12 C to 13 C (expressed as 13 C/ 12 C or d 13 C) is widely used within environmental sciences to understand natural pathways and food webs within ecosystems (see Rundel et al, 1987;Lajtha and Michener, 1994;Dawson and Siegwolf, 2007).…”

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confidence: 99%

An investigation into the archaeological application of carbon stable isotope analysis used to establish crop water availability: solutions and ways forward

Stokes¹,

Müldner²,

Jenkins³

2011

Water, Life and Civilisation

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Using Stable Isotopes as Indicators, Tracers, and Recorders of Ecological Change

Cited by 36 publications

References 65 publications

Stable Isotopic Analysis on Water Utilization of Two Xerophytic Shrubs in a Revegetated Desert Area: Tengger Desert, China

Stable Isotopic Analysis on Water Utilization of Two Xerophytic Shrubs in a Revegetated Desert Area: Tengger Desert, China

Responses of carbon isotope ratios of C_3 herbs to humidity index in northern China

An investigation into the archaeological application of carbon stable isotope analysis used to establish crop water availability: solutions and ways forward

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