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Prioritization of watersheds for soil and water conservation based on GIS, PCA and WSA techniques.
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- Author(s): López-Silva, Maiquel; Carmenates-Hernández, Dayma
- Source:
Tecnología y Ciencias del Agua; nov-dic2023, Vol. 14 Issue 6, p40-75, 36p- Subject Terms:
- Source:
- Additional Information
- Alternate Title: Priorización de cuencas hidrográficas para la conservación del suelo y el agua basado en las técnicas GIS, PCA y WSA. (Spanish)
- Subject Terms:
- Abstract: Soil and water conservation is a priority in the watersheds of arid and semi-arid regions for the proper planning and integrated management of water resources. The objective of this work is prioritizing 91 watersheds in 14 regions of Peru with different geographical, hydrological and geological conditions, through the integration of Geographic Information Systems (GIS), Principal Component Analysis (PCA) and the Weighted Sum Approach (WSA). In addition, homogeneous regions were identified with hierarchical Cluster Analysis in R and Ward's method. The result showed the existence of 19.49 % of total area in high and very high priority category in two regions. The results of the Cluster Analysis showed that 35 % of the watersheds have homogeneous zones within the geometric and shape factor, while 65 % within the drainage and relief factor. In general, GIS, PCA and SWA methods are an efficient tool, which allows decision-making authorities for better planning and conservation of natural resources in hydrographic watersheds. [ABSTRACT FROM AUTHOR]
- Abstract: La conservación del suelo y el agua es una prioridad en las cuencas hidrográficas de las regiones áridas y semiáridas para la adecuada planificación y gestión integrada de los recursos hídricos. El objetivo de este trabajo fue priorizar 91 cuencas hidrográficas en 14 regiones del Perú con diferentes condiciones geográficas, hidrológicas y geológicas, mediante la integración de sistemas de información geográfica (SIG), análisis de componentes principales (PCA) y el análisis de suma ponderada (WSA). Se identificaron regiones homogéneas con el análisis de conglomerados jerárquico en el método de R y Ward. El resultadomostró la existencia de un 19.49 % del área total en categoría de alta y muy alta prioridad en dos regiones. Los resultados del análisis de conglomerados mostraron que el 35 % de las cuencas hidrográficas tiene zonas homogéneas dentro del factor geométrico y de forma, mientras que el 65 % dentro del factor de drenaje y relieve. En general, los métodos SIG, PCA y SWA son herramientas eficientes, que permiten a las autoridades encargadas la toma de decisiones para una mejor planificación y conservación de los recursos naturales en las cuencas hidrográficas. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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