Nitrate and Salt Water Contamination Associated with the Transition of an Agrarian Basin into an Irrigated Area
Abstract:The introduction of irrigation to agrarian areas involves several environmental changes that can be aggravated by physical and agronomic factors. The aim of this study is to analyze the spatiotemporal dynamics of the environmental impact on water resources that result from the transition of an agrarian basin into an irrigated area. During five hydrological years, a spatiotemporal comparison was carried out on the quantity and quality of drainage from the four zones in which the study area was subdivided. Introduction of irrigation activities incorporated flows that lowered salinity and increased nitrate concentration in the basin. The zones/years with most irrigation showed the greatest exports of salts and nitrates, with temporal variations related to rainfall patterns and spatial variations related to soil salinity and nitrogenous fertilization. The agro-environmental impacts of the gradual introduction of irrigation into a previously non-irrigated area were congruent to that of established irrigation areas with similar characteristics.
Document Type: Research Article
Affiliations: 1: MIRARCO - Mining Innovation, Rehabilitation and Applied Research Corporation, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada. 2: Instituto Geológico y Minero de España. C/ Manuel Lasala 44, 9° B, 50006, Zaragoza, Spain. 3: Jasper Ridge Biological Preserve, Stanford University, 4001 Sandhill Road, Woodside, CA 94062, United States. 4: Instituto Pirenaico de Ecología-CSIC & Parque Científico Aula Dei. Av. Montañana 1005, 50192, Zaragoza, Spain.
Publication date: 2013-02-01
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Water Environment Research� (WER�) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year. Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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