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A re-assessment of effects of fire on miombo regeneration in the Zambian Copperbelt

Published online by Cambridge University Press:  10 July 2009

E. N. Chidumayo
E. N. Chidumayo
Affiliation:
Natural Resources Department, Government of Zambia
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Abstract

In 1933/34 eight coppice plots were established in Brachystegia-Julbemardia (miombo) woodland at Ndola in the Copperbelt area of Zambia by the Forestry Department. These plots have been maintained under fire protection, annual early or late dry season burning since 1934/35. Before establishment stems over 20.3 cm girth at breast height were enumerated. Three of the eight plots (one fire protected and two annually early burnt) were enumerated in 1982, 48–49 years after establishment. In addition, a coppice plot at Chitwi, 16 km southwest of the Ndola plots, cleared in 1972 and left to regenerate naturally was enumerated in May 1982 and August 1986 to assess woody plant growth.

The density of stems over 20.0 cm girth in the 13-year-old coppice at Chitwi was 2.5 times that in an adjacent shelterbelt woodland. The stem density in the fire protected plot at Ndola in 1982 was 86% of the pre-felling density while in one of the early burnt plots it was 95% of the pre-felling density. The protected plot had the lowest species diversity after 49 years, largely because of the loss of 11 understorey species that were present before felling.

There were no significant differences in stem mean girth at breast height (gbh) of canopy species in the Ndola plots under fire protection and early burning regimes. Mean annual gbh increments of abundant species were estimated at 1.17–2.21 cm yr−1 and 0.59–1.42 cm yr−1 during 0–9 and 0–49 year age-periods, respectively. Estimated mean annual basal area increments for stems over 30 cm gbh were 0.35 m2 ha−1 for the 13-year-old coppice and 0.24–0.27 m2 ha−1 for the 49-year-old coppice. These results indicate a decrease in both gbh and basal area increment with increasing age of miombo coppice

Keywords

basal areaburninggirth incrementmiombospecies diversityZambia
Type
Research Article
Information
Journal of Tropical Ecology , Volume 4 , Issue 4 , November 1988 , pp. 361 - 372
Copyright
Copyright © Cambridge University Press 1988

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References

LITERATURE CITED

Boaler, S. B. & Sciwale, K. C. 1966. Ecology of a miombo site, Lupa North Forest Reserve, Tanzania. III: Effects on the vegetation of local cultivation practices. Journal of Ecology 54:577–587.CrossRefGoogle Scholar
Brookman-Amissah, J., Hall, J. B., Swaine, M. D. & Attakorah, J. Y. 1980. A re-assessment of a fire protection experiment in north-eastern Ghana savanna. Journal of Applied Ecology 17:85–99.CrossRefGoogle Scholar
Chidumayo, E. N. 1987a. Woodland structure, destruction and conservation in the Copperbelt area of Zambia. Biological Conservation 40:89–100.CrossRefGoogle Scholar
Chidumayo, E. N. 1987b. A survey of wood stocks for charcoal production in miombo woodlands of Zambia. Forest Ecology and Management 20:105–116.Google Scholar
Lawton, R. M. 1978. A study of the dynamic ecology of Zambian vegetation. Journal of Ecology 66:175–198.CrossRefGoogle Scholar
Lees, H. M. N. 1962. Working plan for the forests supplying the Copperbelt, Western Province. Government Printer, Lusaka.Google Scholar
Malaisse, F. 1978. The miombo system. In Natural Resources Research xiv: Tropical Forest Ecosystems. Unesco-UNEP, Paris.Google Scholar
Mansfield, J. E., Bennet, J. G., King, R. B., Lang, D. M. & Lawton, R. M. 1976. Land resources of the Northern and Luapula Provinces, Zambia – a reconnaissance assessment, vol. 4. Land Resources Division, Ministry of Overseas Development, Surrey.Google Scholar
Parker, R. E. 1973. Introductory statistics for biology. Edward Arnold, London.Google Scholar
Rose-Innes, R. 1971. Fire in West African vegetation. Annual Proceedings of the Tall Timbers Fire Ecology Conference, Tallahassee, 1971 (pp. 147–173).Google Scholar
Trapnell, C. G. 1959. Ecological results of woodland burning experiments in Northern Rhodesia. Journal of Ecology 47:129–168.CrossRefGoogle Scholar
Trapnell, C. G. & Clothier, J. N. 1957. The soils, vegetation and agricultural systems of North-Western Rhodesia. Government Printer, Lusaka.Google Scholar
Trapnell, C. G., Friend, M. T., Chamberlain, G. T. & Birch, H. F. 1976. The effects of fire and termites on a Zambian woodland soil. Journal of Ecology 64:577–588.CrossRefGoogle Scholar
White, , 1962. Forest flora of Northern Rhodesia. Oxford University Press, London.Google Scholar
White, F. 1983. The vegetation of Africa. Unesco, Paris.Google Scholar
Whitlow, R. 1987. Man's impact on vegetation: the African experience. Pp. 353–379. In Gregory, K. J. & Walling, D. E. (eds). Human activity and environmental processes. John Wiley & Sons, London.Google Scholar