Effects of irrigation on geochemical processes in a paddy soil and in ground waters in Camargue (France)

被引：7

作者：

Cary, L ^{[1
]}

Trolard, F ^{[1
]}

机构：

[1] INRA, Unite Geochim Sols & Eaux, F-13545 Aix En Provence 4, France

来源：

JOURNAL OF GEOCHEMICAL EXPLORATION | 2006年 / 88卷 / 1-3期

关键词：

irrigation; oxido-reduction; carbonates; iron oxides; paddy soil; Cam argue; rice;

D O I：

10.1016/j.gexplo.2005.08.033

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In waterlogged soils, dynamics of water influence the redox conditions and thus the mobility of elements. Irrigation of rice in Camargue (South eastern France) induces yearly dynamics of water. In order to determine the impact of irrigation on the geochemical properties of ground waters, a continuously in situ record of physico-chemical parameters (pH, Eh, temperature and electric conductivity) is performed during I year in an irrigated rice field. Seasonal dynamics show large Eh and pH variations. An annual irrigation cycle generates fast precipitations of Ca-Mg carbonates and Fe oxides between 50 and 110 cm depth when the soil is waterlogged. The dissolution of these minerals is initiated during a year without irrigation. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：177 / 180

页数：4