Preliminary empirical models to predict reductions in total and low flows resulting from afforestation

Water SA

Volumn 23, Issue 2, 1997, Pages 135-140

  Scott, David F ^a   Smith, R E ^a  

^a Future production Chemicals Cluster   (South Africa)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0030956919     PISSN: 03784738     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (20)

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3. BOSCH JM and HEWLETT JD (1982) A review of catchment experiments to determine the effects of vegetation changes on water yield and evapotranspiration. J. of Hydrol. 55 3-23.
4. BOSCH JM and SMITH RE (1989) The effect of afforestation of indigenous scrub forest with Eucalyptus on streamflow from a small catchment in the Transvaal, South Africa. S. Afr. For. J. 150 7-17.
5. DRAPER NR and SMITH H (1966) Applied Regression Analysis. John Wiley & Sons, New York. 407 pp.
6. DWAF (1996) Commercial Timber Resources and Roundwood Processing in South Africa 1994/95. Chief Directorate of Forestry, Department of Water Affairs and Forestry, Pretoria.
7. HEWLETT JD and PIENAAR L (1973) Design and analysis of the catchment experiment. In: White EH (ed.)On Use of Small Watersheds in Determining Effects of Forest Land Use on Water Quality. Proc. Symp. University of Kentucky, Lexington, KY. 88-106.
8. KEPPELER ET and ZIEMER RR (1990) Logging effects on streamflow: Water yield and summer low flows at Caspar Creek in Northwestern California. Water Resour. Res. 26 1669-1679.
9. NANNI UW (1970) Trees, water and perspective. S. Afr. For. J. 75 9-17.
10. POYNTON RJ (1971) A silvicultural map of South Africa. S. Afr. J. of Sci. 67 58-60.
11. SCOTT DF and LE MAITRE DC (1993) A Procedure for Calculating the Percentage Reductions in Annual and Low Flows for Use in the Allocation of Permits for Afforestation. Unpublished contract report, FOR-DEA 664, to the Department of Water Affairs and Forestry. CSIR Division of Forest Science and Technology, Pretoria.
12. SMITH RE (1991) Effect of clearfelling pines on water yield in a small Eastern Transvaal catchment, South Africa. Water SA 17 217-24.
13. SMITH RE and BOSCH JM (1989) A description of the Westfalia catchment experiment to determine the effect on water yield of clearing the riparian zone and converting an indigenous forest to a Eucalypt plantation. S. Afr. For. J. 151 26-31.
14. SMITH RE and SCOTT DF (1992a) Simple Empirical Models to Predict Reductions in Annual and Low Flows Resulting from Afforestation. Unpublished contract report, FOR-DEA 465, to the Department of Water Affairs and Forestry. CSIR Division of Forest Science and Technology, Pretoria.
15. SMITH RE and SCOTT DF (1992b) The effects of afforestation on low flows in various regions of South Africa. Water SA 18 185-194.
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17. VAN DER ZEL DW (1990) The Afforestation Permit System. Information Leaflet no. 1 issued by the Department of Environment Affairs, Private Bag X447, Pretoria.
18. VAN DER ZEL DW (1995) Accomplishments and dynamics of the South African afforestation permit system. S. Afr. For. J. 172 49-58.
19. VAN LILL WS, KRUGER FJ and VAN WYK DB (1980) The effects of afforestation with Eucalyptus grandis Hill ex Maiden and Pinus patula Schlecht, et Cham. on streamflow from experimental catchments at Mokobulaan, Transvaal. J. of Hydrol. 48 107-118.
20. VAN WYK DB (1987) Some effects of afforestation on streamflow in the Western Cape Province, South Africa. Water SA 13 31-36.