Characterizing the climatic water balance dynamics and different runoff components in a poorly gauged tropical forested catchment, Nicaragua
作者： Heyddy Calderon , Stefan Uhlenbrook
DOI: 10.1080/02626667.2014.964244
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摘要: ABSTRACTThe water balance dynamics and runoff components of a tropical forested catchment (46 km2) on the southwestern Pacific coast Nicaragua were studied combining hydrometry, geological characterization hydrochemical isotopic tracers (three-component hydrograph separation). The climatic was estimated for 2010/11, 2011/12 2012/13 with net values 811 mm year-1, 782 mm year-1 –447 mm respectively. Runoff at different spatial temporal scales, demonstrating that sources contributions are controlled by dominant landscape elements antecedent rainfall. In sub-catchments, permeable soils, stratigraphy steep slopes favour subsurface stormflow generation contributing 50% 53% to total discharge. At scale, such as smooth slopes, wide valleys, deeper soils table allow groundwater recharge during rainfall events. Groundwater dominates (50% d...
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