Citation
Cruz R. V. O., . and Combalicer E. A., . and Lee S. H., . and Im S., . Modelling hydrologic processes distribution in a tropical forest watershed in the Philippines. pp. 155-169. ISSN 0128-1283
Abstract
Hydrologic modelling has become an indispensable tool and cost-effective process in understanding the movement of water loss in the Molawin rainforest watershed Philippines. The study aimed to optimise the use of a lumped BROOK90 model and simulate the hydrologic processes distribution in a given watershed. The rating curve model was developed as a basis for hydrologic modelling. The model was calibrated at catchment scale to avoid subjectivity of various variable parameters by considering the topography morphology climate soil and canopy characteristics. Five years of streamflow discharge measurements were considered for the model sensitivity analysis calibration and validation. Results showed a good agreement between observed and simulated streamflows during calibration (r 0.87 and E 0.87) and validation (r 0.84 and E 0.81) periods. As a consequence the major hydrologic processes distribution accounted for 41 of the precipitation that turned into evaporation while 49 became streamflow and 10 remained in deep seepage loss. Overall the distribution of hydrologic components is primarily reflected during pronounced seasonal variations and fluctuating patterns in precipitation.
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Abstract
Hydrologic modelling has become an indispensable tool and cost-effective process in understanding the movement of water loss in the Molawin rainforest watershed Philippines. The study aimed to optimise the use of a lumped BROOK90 model and simulate the hydrologic processes distribution in a given watershed. The rating curve model was developed as a basis for hydrologic modelling. The model was calibrated at catchment scale to avoid subjectivity of various variable parameters by considering the topography morphology climate soil and canopy characteristics. Five years of streamflow discharge measurements were considered for the model sensitivity analysis calibration and validation. Results showed a good agreement between observed and simulated streamflows during calibration (r 0.87 and E 0.87) and validation (r 0.84 and E 0.81) periods. As a consequence the major hydrologic processes distribution accounted for 41 of the precipitation that turned into evaporation while 49 became streamflow and 10 remained in deep seepage loss. Overall the distribution of hydrologic components is primarily reflected during pronounced seasonal variations and fluctuating patterns in precipitation.
Additional Metadata
Item Type: | Article |
---|---|
AGROVOC Term: | Geohydrology |
AGROVOC Term: | Tropical forests |
AGROVOC Term: | Plant morphology |
AGROVOC Term: | Climate change |
AGROVOC Term: | Soil analysis |
AGROVOC Term: | Canopy |
AGROVOC Term: | Seepage water |
AGROVOC Term: | Precipitation |
AGROVOC Term: | Water loss |
AGROVOC Term: | Forest reserves |
Depositing User: | Ms. Suzila Mohamad Kasim |
Last Modified: | 24 Apr 2025 06:27 |
URI: | http://webagris.upm.edu.my/id/eprint/21497 |
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