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Dynamic oxygen mapping in the root zone by fluorescence dye imaging combined with neutron radiography |
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| Authors: | Nicole Rudolph Hanna G Esser Andrea Carminati Ahmad B Moradi André Hilger Nikolay Kardjilov Stefan Nagl Sascha E Oswald |
| Institution: | (1) Institute of Earth and Environmental Science, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany;(2) Department Hydrogeology, Helmholtz Centre for Environmental Research—UFZ, Permoser Str. 15, 04318 Leipzig, Germany;(3) Department of Land, Air and Water Resources, University of California, 1 Shields Avenue, Davis, CA 95616, USA;(4) Helmholtz Centre Berlin—HZB, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;(5) Institute of Analytical Chemistry, University of Leipzig, Johannisallee 29, 04103 Leipzig, Germany |
| Abstract: | PurposeThe rooted zone of a soil, more precisely the rhizosphere, is a very dynamic system. Some of the key processes are water uptake and root respiration. We have developed a novel method for measuring the real-time distribution of water and oxygen concentration in the rhizosphere as a biogeochemical interface in soil. This enables understanding where and when roots are active in respect to root respiration and water uptake and how the soil responds to it. |
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