Effects of land-use change on groundwater recharge model parameters
Author
Summary, in English
Land development usually induces large changes in flood peak and infiltration properties, thus affecting the entire hydrological environment of the area. In order to evaluate such negative effects caused by land-use change, it is necessary to estimate the changes in surface runoff and groundwater recharge rate. The effects of land-use changes on the parameter values of a groundwater recharge model were studied and are presented. The response of groundwater level was examined at several observation wells for two different unconfined aquifers consisting of weathered granite. The spatially calibrated parameters of the groundwater recharge model were classified in order to evaluate the effects of land-use change. It was shown that the parameter values most affected by land-use change were the surface runoff coefficient, F-infinity, followed by the shape parameter, (r)(1/2). The field capacity parameter, R-0, was also greatly affected. By defining the land-use change for these three parameters the hydrological change can be predicted.
Department/s
Publishing year
2009
Language
English
Pages
300-315
Publication/Series
Hydrological Sciences Journal
Volume
54
Issue
2
Document type
Journal article
Publisher
Taylor & Francis
Topic
- Water Engineering
Keywords
- parameter adjustment
- weathered granite
- land-use change
- regional-scale hydrological processes
- groundwater recharge model
- quasi-three-dimensional groundwater flow
Status
Published
ISBN/ISSN/Other
- ISSN: 0262-6667