Diagnóstico hidrológico de la microcuenca Chimborazo con el componente de cambio climático.

This research aimed to conduct a hydrological diagnosis of the Chimborazo micro basin, with a climate change component, in the canton of Riobamba, province of Chimborazo, using the precipitation-runoff method. The area covers 174.94 km² with diverse vegetation cover, such as forest, moorland, and agricultural regions, and has steep slopes. The methodology included three phases: cartographic analysis to delimit the micro basin and study its geomorphological characteristics; calculation of the curve number (CN) with tools such as HEC-HMS; and hydrological modeling to estimate flows under various climatic conditions. Satellite and meteorological data were used, and statistical analysis was used to validate the results. The study revealed that the micro basin has a fourth-order hydrographic network, a drainage density of 0.60 km⁻¹, and a time of concentration of 0.64 hours, indicating a rapid hydrological response. The hypsometric curve shows active erosion and scarce infiltration in a mature state. Furthermore, a decrease in moorland (-9.9%) and glacier (-0.6%) coverage was observed between 2000 and 2020, while agricultural use increased (+10.4%), reducing water retention and increasing surface runoff by 18%. Climate models project decreases in precipitation (3%-7%) and temperature increases (1.2°C-2.5°C), which would affect water supply. Between 1981 and 2000, flow showed a progressive decrease, affecting water supply for human consumption and irrigation. These changes underscore the need for strategies to mitigate the loss of water resources in the micro basin

• 主要作者: Shagñay Sigcho, Germán Gonzalo (author)
• 格式: masterThesis
• 语言: spa
• 出版: 2025
• 主题: cambio climático; cobertura vegetal; escorrentía superficial; micro cuenca Chimborazo; modelación hidrológica y oferta hídrica
• 在线阅读: http://dspace.unach.edu.ec/handle/51000/14939