Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
Volume 16, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/ijerph16050898
Keywords
aquifers; sustainability; desalinated seawater; horticulture; cluster analysis; binary logistic regression
Funding
- Irrigation Communities of Campo de Nijar
- Spanish Ministry of Economy and Competitiveness
- European Regional Development Fund [ECO2017-82347-P, DESEACROP LIFE 16 ENV/ES/000341]
- Research Plan of the University of Almeria
- Research Centre CIAIMBITAL of the University of Almeria (Spain)
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In the Campo de Nijar (southeast Spain), an intensive horticulture model under plastic has been developed based on the use of groundwater. For many years, aquifers have been overexploited, almost generating an environmental collapse. The construction of a desalination plant was planned to improve this situation and to achieve sustainable aquifer management. However, the aquifer is still being overexploited, since farmers scarcely use desalinated seawater for irrigation. In this paper, farmers irrigating with desalinated seawater are characterized, since they contribute to aquifer sustainability. The study aimed to identify the variables which condition the use of this water resource, as well as the kinds of incentives that encourage this option. For this purpose, a survey was undertaken within a sample of 110 farmers. A cluster analysis and a binary logistic regression were employed. The results from the cluster analysis allowed the characterization of farmers who use desalinated seawater for irrigation. Furthermore, the regression model showed the variables that determine a more intensive use of this irrigation source, such as crop diversification, availability of different water resources and the conductivity of aquifer water available for irrigation. The incentives promoting the use of desalinated seawater for irrigation that most encourage farmers are the implementation of tax relief, price reductions and the obligation to install rainwater collection systems.
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