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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3275

Title: Impacts of afforestation on low flows: Paired catchment data revisited
Authors: Blight, JJ
Gush, MB
Le Maitre, D
Jewitt, GPW
Keywords: Hydrological dynamics
Water resource management
Paired catchments
Low flow
SANCIAHS 2005
Afforestation
Hydrology
Catchment data
Bioresources engineering
Environmental hydrology
Issue Date: Sep-2005
Citation: Blight, JJ, Gush, MB, Le Maitre, D andJewitt, GPW. 2005. Impacts of afforestation on low flows: Paired catchment data revisited. 12th South African National Hydrology Symposium, ESKOM Convention Centre, Midrand, South Africa. September, pp 10.
Abstract: Disruption of the hydrological regime caused by afforestation is well documented. Several sets of experimental catchments were set up in South Africa between 1935 and 1980 specifically to quantify such impacts. Data emanating from these experimental catchments have been used in several analyses, and have progressively directed the regulation of commercial forestry and its associated hydrological impacts in this country. Subsequent modelling efforts have sought to introduce improved accuracy by accounting for catchment- and species-specific variations in impacts. However, conventionally used one dimensional hydrological model which models soil moisture to limited depths have been shown to reproduce periods of low flow with limited accuracy. This is a considerable limitation since the evaluation of land use impacts on periods of low flow is particularly important in riverine and water resources management. This paper presents a re-analysis of the data sets of several of the paired catchments, with focus on the low flow periods. Hydrological dynamics revealed by this analysis are to be used in future, improved modelling exercises
Description: 12th South African National Hydrology Symposium, ESKOM Convention Centre, Midrand, South Africa, September 2005
URI: http://hdl.handle.net/10204/3275
Appears in Collections:Water resources and human health
General science, engineering & technology

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