globalchange  > 气候变化与战略
DOI: 10.5194/hess-22-5427-2018
论文题名:
Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method
作者: Mary B.; Peruzzo L.; Boaga J.; Schmutz M.; Wu Y.; Hubbard S.S.; Cassiani G.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期:10
起始页码: 5427
结束页码: 5444
语种: 英语
Scopus关键词: Electric conductivity ; Noninvasive medical procedures ; Soils ; Current injections ; Electrical current ; Electrical resistivity tomography ; Electrically conductive ; Noninvasive methods ; Plant root system ; Root distribution ; Voltage distribution ; Trees (mathematics) ; air-soil interaction ; biological uptake ; electrical resistivity ; identification method ; methodology ; rhizosphere ; subsoil ; tomography ; vine ; vineyard
英文摘要: The investigation of plant roots is inherently difficult and often neglected. Being out of sight, roots are often out of mind. Nevertheless, roots play a key role in the exchange of mass and energy between soil and the atmosphere, in addition to the many practical applications in agriculture. In this paper, we propose a method for roots imaging based on the joint use of two electrical noninvasive methods: electrical resistivity tomography (ERT) and mise-à-la-masse (MALM). The approach is based on the key assumption that the plant root system acts as an electrically conductive body, so that injecting electrical current into the plant stem will ultimately result in the injection of current into the subsoil through the root system, and particularly through the root terminations via hair roots. Evidence from field data, showing that voltage distribution is very different whether current is injected into the tree stem or in the ground, strongly supports this hypothesis. The proposed procedure involves a stepwise inversion of both ERT and MALM data that ultimately leads to the identification of electrical resistivity (ER) distribution and of the current injection root distribution in the three-dimensional soil space. This, in turn, is a proxy to the active (hair) root density in the ground. We tested the proposed procedure on synthetic data and, more importantly, on field data collected in a vineyard, where the estimated depth of the root zone proved to be in agreement with literature on similar crops. The proposed noninvasive approach is a step forward towards a better quantification of root structure and functioning. © 2018Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163162
Appears in Collections:气候变化与战略

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作者单位: Mary, B., Dipartimento di Geoscienze, Università degli Studi di Padova, Via G. Gradenigo, Padova, 6-35131, Italy; Peruzzo, L., GO-Energy, Geosciences Division at Lawrence Berkeley National Laboratory, Calvin Road, Berkeley, CA USA, EA GandE 4592, Bordeaux INP, University Bordeaux Montaigne, Pessac, France; Boaga, J., Dipartimento di Geoscienze, Università degli Studi di Padova, Via G. Gradenigo, Padova, 6-35131, Italy; Schmutz, M., EA GandE 4592, Bordeaux INP, University Bordeaux Montaigne, Pessac, France; Wu, Y., Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Hubbard, S.S., Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Cassiani, G., Dipartimento di Geoscienze, Università degli Studi di Padova, Via G. Gradenigo, Padova, 6-35131, Italy

Recommended Citation:
Mary B.,Peruzzo L.,Boaga J.,et al. Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method[J]. Hydrology and Earth System Sciences,2018-01-01,22(10)
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