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Agricultural land use and water demand for irrigation in the Vinces basin (Ecuador), period 1990 - 2014

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No. 59 (2020)
https://doi.org/10.5354/0719-5370.2020.56958

Abstract

The rapid population growth and the growing international demand for tropical agricultural products have led to the conversion of large areas of land for the intensive agricultural production of several monocultures in Ecuador. The aim of the present work is to analyze the temporo-spatial change of agricultural land use and the expansion of its border in the Vinces basin during the period 1990-2014 due to the presence of the main agricultural monocultures and the demand for water for irrigation by the same agricultural crops according to the water concessions granted by the governmental authority with competence in the basin. The present investigation involved the compilation of digital geoinformation, its subsequent processing in Geographic Information Systems, tabulation of official statistical information and verification in the field. The conceptual integration of the Integrated Management of Water Resources allows us to advance in the understanding of the complexity and difficulties to reach a balance between the natural and social processes that affect us. The main agricultural coverings of the Vinces river basin, represented by monocultures of banana, cocoa, and oil palm, showed a remarkable and progressive temporo-spatial change (expansion of the cultivated area) and an increase in water pressure in the basin. irrigation in the long period of low water. The historical concessions of irrigation water extended in the Vinces basin by the environmental authority does not reflect the true volume used by the agricultural sector in the summer stage, which is demonstrated by relating the volumes of water concessioned, the hectares of planted crops and the actual water requirements for the crops mentioned above to achieve maximum productivity.

Keywords:

Agricultural products, GIS, Guayas river basin, land use, temporo-spatial change.

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How to Cite
Muñoz Murcillo, J. L., Gentili, J., & Bustos Cara, R. (2020). Agricultural land use and water demand for irrigation in the Vinces basin (Ecuador), period 1990 - 2014. Investigaciones Geográficas, (59), 91–104. https://doi.org/10.5354/0719-5370.2020.56958
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Investigaciones Geográficas
Facultad de Arquitectura y Urbanismo
Universidad de Chile
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