Skip to main content

Sustained water yield in afforested catchments — the South African experience

  • Chapter
Sustainable Forest Management

Part of the book series: Managing Forest Ecosystems ((MAFE,volume 1))

Abstract

South Africa is a relatively dry country, and is particularly dependent on limited areas of high-rainfall mountain catchments as reliable sources of streams and rivers. The natural vegetation within these catchments is mostly seasonally-dormant grassland or fynbos (sclerophyllous shrubland), but has largely been replaced by evergreen forest plantations during the course of this century. This change of land use has brought about declines in streamflow over large parts of the country, to the detriment of downstream users. Sustaining water yields from these catchments is a development imperative, in light of increasing demand for both water and forest products. This paper traces over six decades of research information, and the parallel development of legislation and policies, which has brought South Africa within sight of an effective integrated water resource management system. This experience may offer useful insights to the problem of sustaining water yields from afforested catchments in other water-scarce countries.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 169.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 219.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature

  • Banks, C.H., 1961: The hydrological effects of riparian and adjoining vegetation. Forestry in South Africa 1: 31–46.

    Google Scholar 

  • Boden, D.I., 1992: The relationship between soil water status and the growth of Eucalyptus grandis. ICFR Bulletin Series, No. 25.92, ICFR, Pietermaritzburg, South Africa.

    Google Scholar 

  • Bosch, J.M., 1979: Treatment effects on annual and dry period streamflow at Cathedral Peak. South African Forestry Journal No. 108: 29–38.

    Google Scholar 

  • Bosch, J.M. and Hewlett, J.D., 1982: A review of catchment experiments to determine the effect of vegetation changes on water yield and evapotranspiration. Journal of Hydrology 55: 3–23.

    Article  Google Scholar 

  • Bosch, J.M. and Smith, R.E., 1989: The effect of afforestation of indigenous scrub forest with Eucalyptus on streamflow from a small catchment in the Transvaal, South Africa. South African Forestry Journal No. 150: 7–17.

    Google Scholar 

  • Bosch, J.M. and Gadow, K., v., 1990: Regulating afforestation for water conservation in South Africa. South African Forestry Journal 153: 41–54.

    Article  Google Scholar 

  • Bosch, J.M., Berliner, D, and le Maitre, D.C., 1995: Guidelines for the delineation and management of riparian zones. Unpublished contract report, CSIR Division of Water, Environment and Forestry Technology, Stellenbosch.

    Google Scholar 

  • Burger, C., 1999: Comparative evaporation measurements above commercial forestry and sugarcane canopies in the KwaZulu-Natal midlands. PhD Thesis, Faculty of Science and Agriculture, University of Natal, Pietermaritzburg, South Africa.

    Google Scholar 

  • Chapman, R.A., Manders, P.T., Scholes, R.J. and Bosch, J. M., 1995: Who should get the water ? Decision support for water resource management. Water Science Technology. Vol. 32, no. 5–6, pp 37–43.

    Google Scholar 

  • Chapman, R.A. and Scott, D.F., 1999: The implications of using average plantation age when assessing the hydrological impacts of afforestation. (In preparation).

    Google Scholar 

  • Denison, N.P. and Kietzka, J.E., 1993: The development and utilization of vegetative propagation in Mondi for commercial afforestation programmes. South African Forestry Journal, No. 166: 53–60.

    Article  Google Scholar 

  • Department of Water Affairs, 1986: Management of the Water Resources of the Republic of South Africa. CTP Book Printers, Cape Town.

    Google Scholar 

  • Dye, P.J., 1987: Estimating water use by Eucalyptus grandis with the Penman-Monteith equation. In: Forest Hydrology and Watershed Management. Proceedings of the Vancouver Symposium, August 1987, IAHS Publication no. 167:329–337.

    Google Scholar 

  • Dye, P.J. and Versfeld, D.B., 1992a: Rainfall interception by Eucalyptus grandis canopies: a proposed modelling procedure for use in catchment water balance simulations. CSIR report FOR-DEA 369.

    Google Scholar 

  • Dye, P.J. and Versfeld, D.B., 1992b: Rainfall interception by a ten-year-old Pinus patula plantation. CSIR report FOR-DEA 424.

    Google Scholar 

  • Dye, P.J. and Mostert, G., 1994: Development of a rainfall interception model for forest litter under stands of Eucalyptus grandis, Pinus patula and Pinus taeda. CSIR report no. FOR-DEA 757.

    Google Scholar 

  • Dye, P.J. and Poulter, A.G., 1995: A field demonstration of the effect on streamflow of clearing invasive pine and wattle trees from a riparian zone. South African Forestry Journal No 173: 27–30.

    Google Scholar 

  • Dye, P.J., Poulter, A.G., Soko, S. and Maphanga, D., 1997a: The determination of the relationship between transpiration rate and declining available water for Eucalyptus grandis. Water Research Commission Report No. 441/1/97. 103 pp.

    Google Scholar 

  • Dye, P.J., Soko, S. and Maphanga, D., 1997b: Inter-annual variation in water use efficiency of three clones in kwaMbonambi, Zululand. CSIR Report ENV/P/C 97048, 35 pp.

    Google Scholar 

  • Dye, P.J., 1999: A preliminary verification of the 3-PG forest growth and water use model for Pinus patula plantations. Milestone report, Division of Water, Environment and Forestry Technology, CSIR, Pretoria, South Africa. 29 pp.

    Google Scholar 

  • Everson, C.S., Molefe, G.L. and Everson, T.M., 1998: Monitoring and modelling components of the water balance in a grassland catchment in the summer rainfall area of South Africa. Water Research Commission Report No. 493/1/98. 138 pp.

    Google Scholar 

  • Görgens, A. and Lee, J., 1992: Hydrological Impacts of Forestry: A Research Planning Study. Report to the Water Research Commission, KV 37/92.

    Google Scholar 

  • Görgens, A, Pegram, G, Uys, M, Grobicki, A, Loots, L, Tanner, A and Bengu, R., 1998: Guidelines for catchment management to achieve integrated water resources management in South Africa. WRC Report No. KV 108/98, Pretoria, South Africa.

    Google Scholar 

  • Hewlett, J.D. and Pienaar, L., 1973: Design and analysis of the catchment experiment. In: White, E.H. (Ed.) Proceedings of the Symposium on use of small watersheds in determining effects of forest land use on water quality. University of Kentucky, Lexington, Kentucky. Pp 88–106.

    Google Scholar 

  • Hibbert, A.R., 1967: Forest treatment effects on water yield. In: Sopper, W.E. and Lull, H.W. (eds.) International Symposium on Forest Hydrology, Pergamon Press, Oxford.

    Google Scholar 

  • Jewitt, G.P.W., 1992: Process studies for simulation modelling of forest hydrological impacts. Unpublished MSc dissertation, University of Natal, Pietermaritzburg, Department of Agricultural Engineering. Pp 145.

    Google Scholar 

  • Kruger, F.J and Bosch, J.M., 1999: The development of a research programme to support the implementation of legislation and policy related to stream flow reduction activities. Contract report env-p-c 98159.Water Research Commission Report ISBN No. 1 86845 483 5, 41pp.

    Google Scholar 

  • Le Maitre, D.C., Scott, D.F. and Fairbanks, D.H.K., 1997: Impacts of timber plantations on runoff in South Africa: a handy reference manual. Unpublished contract report, ENV/S-C 96068, CSIR Division of Water, Environment and Forestry Technology, Stellenbosch and Pretoria, South Africa.

    Google Scholar 

  • Lesen, W. and Scott, D.F., 1997: The response in water yield to the thinning of Pinus radiata, Pinus patula and Eucalyptus grandis plantations. Forest Ecology and Management 99: 295–307.

    Article  Google Scholar 

  • Malherbe, H.L.W., 1968: Afforestation and Water Supplies in South Africa. Report of an Interdepartmental Committee, Department of Forestry, Pretoria, South Africa.

    Google Scholar 

  • Nänni, U.W., 1956: Forest hydrological research at the Cathedral Peak Research Station. Journal of South African Forestry Association 27: 2–35.

    Article  Google Scholar 

  • Nänni, U.W., 1970: Trees, water and perspective. South African Forestry Journal 75: 9–17.

    Article  Google Scholar 

  • Nänni, U.W., 1972: Water use by riparian vegetation at Cathedral Peak. South African Forestry Journal 80: 1–10.

    Article  Google Scholar 

  • Olbrich, B.W., 1994: The application of the heat pulse velocity technique to the study of transpiration from Eucalyptus grandis. PhD thesis, University of the Witwatersrand, Johannesburg, South Africa.

    Google Scholar 

  • Pitman, W.V. and Kakebeeke, J.P., 1991: The Pitman model — into the 1990s. Proceedings of the fifth South African national Hydrological Symposium, Stellenbosch. South African Committee for the International Association of Hydrological Sciences.

    Google Scholar 

  • Prinsloo, F.W. and Scott, D.F., 1999: Streamflow responses to the clearing of alien invasive trees from riparian zones at three sites in the Western Cape province. Southern African Forestry Journal No 185: 1–7.

    Google Scholar 

  • Rycroft, H.B., 1955: The effect of riparian vegetation on water loss from an irrigation furrow at Jonkershoek. Journal of South African Forestry Association 26: 80–88.

    Google Scholar 

  • Schulze, R.E., Scott-Shaw, C.R and Nänni, U.W., 1978: Interception by Pinus patula in relation to rainfall parameters. Journal of Hydrology 36: 393–396.

    Article  Google Scholar 

  • Schulze, R.E. and George, W.J., 1987: A dynamic, process-based, user-orientated model of forest effects on water yield. Hydrological processes 1: 293–307.

    Article  Google Scholar 

  • Schulze, R.E., 1989: ACRU: background, concepts and theory. WRC Report No. 154/1/89. Water Research Commission, Pretoria, South Africa.

    Google Scholar 

  • Schulze, R.E., 1995: Hydrology and Agrohydrology. A text to accompany the ACRU 3.00 agrohydrological modelling system. WRC reportTT69/95.

    Google Scholar 

  • Scott, D.F. and Lesch, W., 1995: The water yield gains obtained from clearfelling riparian zone vegetation. Proceedings of the Seventh South African National Hydrological Symposium, Grahamstown, South Africa. 4–6 September 1995.

    Google Scholar 

  • Scott, D.F. and Lesen, W., 1997: Streamflow responses to afforestation with Eucalyptus grandis and Pinus patula and to felling in the Mokobulaan experimental catchments, Mpumalanga Province, South Africa. Journal of Hydrology 199: 360–377.

    Article  Google Scholar 

  • Scott, D.F. and Smith, R.E., 1997: Preliminary empirical models to predict reductions in total and low flows resulting from afforestation. Water SA, 23: 135–140.

    Google Scholar 

  • Scott, D.F., Le Maitre, D.C. and Fairbanks, D.H.K., 1998: Forestry and streamflow reductions in South Africa: a reference system for assessing extent and distribution. Water SA 24: 187–199.

    Google Scholar 

  • Scott, D.F., Le Maitre, D.C. and van Wyk, E., 1999: The effects of forestry on low flows: further studies on low flow in wet and dry cycles and in relation to catchments of increasing size. Contract report No. ENV/S-C 99059, CSIR, Pretoria, South Africa.

    Google Scholar 

  • Smith, R.E. and Bosch J.M., 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. South African Forestry Journal 151:26–31.

    Article  Google Scholar 

  • Smith, R.E. and Scott, D.F., 1992: The effect of afforestation on low flows in various regions of South Africa. Water SA 18: 185–194.

    Google Scholar 

  • Tarboton, K.C. and Schulze, R.E., 1991: The ACRU modelling system for large catchment water resource management. In: Van de Ven, F.H.M., Gutknecht, D., Loucks, D.P. and Salewicz, K.A. (eds.) Hydrology for the water management of large river basins. IAHS Publication No. 201: 219–232.

    Google Scholar 

  • Van der Zel, D.W., 1970: The effect of thinning on flow in a Jonkershoek stream. Forestry in South Africa 11: 14–43.

    Google Scholar 

  • Van der Zel, D. W., 1995: Accomplishments and dynamics of the South African afforestation permit system. South African Forestry Journal No. 172: 49–58.

    Article  Google Scholar 

  • Van Lill, W.S., Kruger, F.J. and Van Wyk, D.B., 1980: The effect of afforestation with Eucalyptus grandis Hill ex Maiden and Pinus patula Schlecht. Et Cham. on streamflow from experimental catchments at Mokobulaan, Transvaal. Journal of Hydrology 48: 107–118.

    Article  Google Scholar 

  • Van Lochem, M.D., 1986: The leaf area index of Eucalyptus grandis at different stages of the production cycle. Research Report, Saasveld School of Forestry, George, South Africa.

    Google Scholar 

  • Van Wyk, D.B., 1977: Die invloed van bebossing met Pinus radiata op die totale jaarlikse afvoer van die Jonkershoek strome. Unpublished M.Sc. Thesis, University of Stellenbosch.

    Google Scholar 

  • Van Wyk, D.B., 1987: Some effects of afforestation on streamflow in the Western Cape Province, South Africa. Water SA 13:31–36.

    Google Scholar 

  • Versfeld, D.B. and Bosch, J.M., 1982: The options for catchments — how to make the right decisions: another view. Foris. Faculty of Forestry, University of Stellenbosch. Communication No. 98: 427–446.

    Google Scholar 

  • Versfeld, D.B., 1988: Rainfall interception in stands of Pinus radiata and Protea neriifolia: Measurement and prediction. In: van Laar, A. (ed.) Research Contributions to Plantation Forestry. University of Stellenbosch, Stellenbosch.

    Google Scholar 

  • Versfeld, D.B., 1994: The forest industry and management for water conservation. In: Southern African Forestry Handbook 1994. South African Institute of Forestry, pp 657–674.

    Google Scholar 

  • Wicht, C.L., 1967: Forest hydrology research in the South African republic. In: Sopper, W.E. and Lull, H.W. (ed.) International Symposium of Forest Hydrology, Pergamon Press, Oxford.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2000 Kluwer Academic Publishers

About this chapter

Cite this chapter

Dye, P.J., Bosch, J.M. (2000). Sustained water yield in afforested catchments — the South African experience. In: von Gadow, K., Pukkala, T., Tomé, M. (eds) Sustainable Forest Management. Managing Forest Ecosystems, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9819-9_3

Download citation

  • DOI: https://doi.org/10.1007/978-94-010-9819-9_3

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-0278-6

  • Online ISBN: 978-94-010-9819-9

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics