Development of selection index for reforestation species in typhoon prone areas: an adaptation to climate change
2010
Bolaguer, A.N., Department of Environment and Natural Resources Region V, Legaspi City 4500 (Philippines). Ecosystems Research and Development Service
There is no screening method being used for the choice of reforestation species in typhoon prone area in the Philippines. Four frequently used reforestation species were evaluated for typhoon resistance under field conditions in Bacacay, Albay, Philippines from January 2000 to December 2001. Agoho (Casuarina equisetifolia), mahogany (Swietenia macrophylla), river red gum (Acacia aureculiformis) and yemane (Gmelina arborea) were evaluated using five different damage categories as treatment namely: 1) defoliation, 2) breaking of branches, 3) breaking of stem, 4) leaning, and 5) uprooting. Plots were laid out on top of mountain ridges where heaviest impact of typhoon is expected, in completely randomized design with four replications under 10-year old plantations at spacing of 2x2 m with 25 trees per treatment. Correlation analysis was used to compare linear associations of the damage categories, total height, basal diameter and species. Means were compared using Turkey's honest significant differences (HSD) test. Results indicate significant differences among treatments. Agoho was found resistant in all damage categories assessed. It could be recommended in reforesting exposed, high elevation, typhoon prone areas because of its needle-like foliage, spherical canopy structure, high wood tensile strength and a deep-root system. Mahogany was found moderately resistant to typhoon, while yemane and river red gum were non-resistant. Using the different damage categories assessed in the study, an index of species resistance to typhoon was developed.
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Este registro bibliográfico ha sido proporcionado por University of the Philippines at Los Baños