Estimating short-rotation Eucalyptus saligna production in Hawaii: an integrated yield and economic model
1993
Liu, W. | Merriam, R.A. | Phillips, V.D. | Singh, D.
Growth data of Eucalyptus saligna from plantation experiments in Hawaii and South Africa were analyzed to determined relationships between yield and soil, climatic, and management variables. Detailed investigations were made of growing space, fertilization, and site conditions on tree diameter. The independent variables used were growth age, planting density, nitrogen fertilizer application, temperature, rainfall and solar radiation, soil nitrogen content and pH value, and site elevation. The regression equation developed was used to estimate E. saligna yield of various short-rotation strategies and site-specific climate and soil conditions. By coupling these site-specific results with a geographical information system, yield was then predicted at all locations on the island of Kauai identified as available for biomass plantations. The estimated total land area available and potential biomass are presented Establishment costs for E. saligna plantations on Kauai ranged from US $1207/ha to US $1655/ha for different planting densities and amounts of fertilizer applied.
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