Assessment of diffuse contamination of agricultural soil by copper in Aquitaine region by using French national databases

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• 作者：Hind El Hadri^a ; ^b ; ^{hind.el-hadri@etud.univ-pau.fr} ; Philippe Ché ; ry^b ; ^{p-chery@agro-bordeaux.fr} ; Sté ; phanie Jalabert^b ; ^{s-jalabert@agro-bordeaux.fr} ; Alexandre Lee^b ; ^{a-lee@agro-bordeaux.fr} ; Martine Potin-Gautier^a ; ^{martine.potin@univ-pau.fr} ; Gaë ; tane Lespes^a ; ^{gaetane.lespes@univ-pau.fr}
• 关键词：Copper ; Vineyard ; Soil contamination ; French databases
• 刊名：Science of the Total Environment
• 出版年：2012
• 出版时间：15 December, 2012
• 年：2012
• 卷：441
• 期：Complete
• 页码：239-247
• 全文大小：1068 K

文摘

A long-term application of copper-based fungicides to fight against downy mildew has led to soil contamination by copper particularly in Aquitaine region where viticulture is important. This work aims to statistically validate the origin of diffuse contamination of Aquitaine agricultural soils and show that contamination is closely related to wine-growing in this region. For this purpose, several national databases have been used. From the French National Soil Monitoring Network (R¨¦seau de Mesures de la Qualit¨¦ des sols RMQS) data, an Exploratory Data Analysis (EDA) was performed to bring out the copper contamination. The French test soil database (Base de Donn¨¦es des Analyses de Terre BDAT) and the national census of agriculture (Recensement G¨¦n¨¦ral Agricole RGA) have been crossed. A statistical approach has been used to determine the relationship between the median concentration of copper extracted by Ethylene Diamine Tetra-acetic Acid (EDTA) referred to as CuEDTA in cultivated topsoils of the Aquitaine region and the ratio between winegrowing area (Svine) and the Used Agricultural Area (UAA) expressed as the form Svine/UAA. The results revealed a strongly significant exponential correlation between these two variables. They allow concluding that at cantonal scale, when vines cover more than 80 % of the UAA, an overexposure of soils to the diffuse contamination by copper can occur.