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Forestry 1991 64(3):271-288; doi:10.1093/forestry/64.3.271
© 1991 by Institute of Chartered Foresters
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Nutrient Accumulation in Vegetation Following Conventional and Whole-Tree Harvest of Sitka Spruce Plantations in North Wales

T. J. FAHEY1, M. O. HILL2, P. A. STEVENS3, M. HORNUNG4 and P. ROWLAND4

1Department of Natural Resources, Cornell University Fernow Hall, Ithaca, New York 14853, USA
2The Institute of Terrestrial Ecology Monks Wood Experimental Station, Abbots Ripton, Huntingdon, PE17 2LS, England
3The Institute of Terrestrial Ecology, Bangor Research Unit Deiniol Road, Bangor, Gwynedd, LL57 2UP, Wales
4The Institute of Terrestrial Ecology, Merlewood Research Station Grange-Over-Sands, Cumbria, LA11 16JU

The role of regrowing vegetation in buffering nutrient losses following whole-tree and conventional harvest of Sitka spruce was examined at Beddgelert Forest in North Wales. Biomass and nutrient accumulation were about twice as rapid on the whole-tree (WH) than the conventional harvest (CH) plots, apparently because logging residue shaded the ground on the CH plots. This result probably helps to explain much higher leaching of nutrients from the root zone on the CH than the WH plots. However, the differences in nutrient accumulation in regrowing vegetation between WH and CH plots were much smaller than the differences (in the opposite direction) in nutrient removal of forest products. Thus, higher nutrient accumulation in regrowing vegetation following WH compared with CH may partly counteract leaching losses during the first few years but this effect is clearly outweighed by the higher nutrient removal in forest products in WH.

Received 26 April 1990.
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