Surface water balance in the Chapingo river basin: rainfall interception by vegetation and infiltration into the soil
Objective: Estimate the surface water balance in the Chapingo river micro-basin in the period 2014 and 2016-2018 based on information collected on precipitation and runoff, the use of interception simulation models, and the remaining estimate of infiltration. Design/methodology/approach: During the wet season of 2014 and 2016-2018, the water balance in unit depths was estimated from precipitation and runoff data, interception simulation models, and estimation of infiltration as a remnant of the balance. Results: The highest interception rate was found in the year (2014) with the lowest range and least dispersion of precipitation, while the lowest interception occurred in the year (2018) with opposite characteristics of precipitation. In two of the years of study, a linear relationship was found between precipitation and surface runoff with R2 greater than 0.81. The interception rate was lower in the oyamel forest (7.7% -9.3%), the interception variation between grassland, pine forest, oak forest and agricultural area was 20% to 23%. The remaining water for infiltration represented between 85.5% and 88.2% of the precipitated water. Study limitations/implications: It is necessary to know the temporal evolution of the rainfall interception and the soil moisture to specify the potential recharge to the aquifer. Findings/conclusions: Interception is the main vehicle by which water reaches the ground in the presence of areas covered by vegetation. Precipitation intensity negatively affects interception and infiltration. The study basin offers a high recharge potential to the Texcoco aquifer.
| Autores principales: | , , , |
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| Formato: | Digital revista |
| Idioma: | spa |
| Publicado: |
Colegio de Postgraduados
2023
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| Acceso en línea: | https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2586 |
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