Partitioning Field Evapotranspiration Fluxes by Using Stable Oxygen Isotope during Different Maize Growth Stages
نویسندگان
چکیده
منابع مشابه
Determining the Oxygen Isotope Composition of Evapotranspiration Using Eddy Covariance
The oxygen isotope composition of evapotranspiration (δF ) represents an important tracer in the study of biosphere–atmosphere interactions, hydrology, paleoclimate, and carbon cycling. Here, we demonstrate direct measurement of δF based on the eddy-covariance and tunable diode laser spectroscopy (EC-TDL) techniques. Results are presented from laboratory experiments and field measurements in ag...
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Introduction: The detection of methane in the Martian atmosphere (1-4) and the probability of the existence of liquid water during the early history of Mars (5-10) prompted enthusiasm about plausible life forms on Mars. The half-life of methane in a planetary atmosphere is about 300 years (11), so in order to be detected on Mars, methane would need to be replenished continuously. Several potent...
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Oxygen utilization is defined in this investigation as the terminal use of oxygen in respiration, i.e., the formation of water. A culture of Pseudomonas fluorescens was allowed to respire in an atmosphere of O(18). The production of H(2)O(18) was measured during two test runs of 124 and 232 min each. During the first run, 0.505 mmole of H(2)O(18) was produced. The second run produced 0.460 mmol...
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ژورنال
عنوان ژورنال: Journal of Agricultural Science
سال: 2011
ISSN: 1916-9760,1916-9752
DOI: 10.5539/jas.v4n3p11