气候变化领域集成服务门户(CCPortal): Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method

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DOI	10.5194/hess-22-5427-2018
	Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method
	Mary B.; Peruzzo L.; Boaga J.; Schmutz M.; Wu Y.; Hubbard S.S.; Cassiani G.
发表日期	2018
ISSN	1027-5606
起始页码	5427
结束页码	5444
卷号	22 期号:10
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).
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
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159879
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
推荐引用方式 GB/T 7714	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],2018,22(10).
APA	Mary B..,Peruzzo L..,Boaga J..,Schmutz M..,Wu Y..,...&Cassiani G..(2018).Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method.Hydrology and Earth System Sciences,22(10).
MLA	Mary B.,et al."Small-scale characterization of vine plant root water uptake via 3-D electrical resistivity tomography and mise-à-la-masse method".Hydrology and Earth System Sciences 22.10(2018).