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eco.mont 18 No. 2Journal on Protected Mountain Areas Research and Management
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Verlag der Österreichischen Akademie der Wissenschaften Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400 https://verlag.oeaw.ac.at, e-mail: verlag@oeaw.ac.at |
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DATUM, UNTERSCHRIFT / DATE, SIGNATURE
BANK AUSTRIA CREDITANSTALT, WIEN (IBAN AT04 1100 0006 2280 0100, BIC BKAUATWW), DEUTSCHE BANK MÜNCHEN (IBAN DE16 7007 0024 0238 8270 00, BIC DEUTDEDBMUC)
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Eco.mont Vol. 18 Nr. 2, pp. 14-23, 2026/06/23
Journal on Protected Mountain Areas Research and Management
The Dibudalan Mountain Forest Reserve (DMFR) in Aurora, Philippines, is a tropical secondary forest characterized by a varied tree species and considerable carbon sequestration potential. Using 13 permanent quadrats along two belt transects, tree composition, biomass and carbon stock were assessed. A Shannon–Wiener diversity index of 3.543 was calculated from a total sampling population of 444 trees representing 57 species and 31 families, indicating a highly diverse forest status of the study area. A large amount of sequestered carbon that substantially contributed to the above-ground biomass was collectively concentrated in a few trees with large-diameter trunks, particularly Lagerstroemia piriformis, Xanthostemon philippinensis, Wrightia pubescens, and Artocarpus odoratissimus. The notable total carbon stock across quadrats, averaging 250.95 tC/ha reflects the stand’s different structure and disturbance history. The ecological importance of the DMFR highlights the dominance of endemic and vulnerable species. Results underscore the need to implement forest management strategies that enhance the protection of high-biomass trees while sustaining biodiversity, safeguarding ongoing carbon sequestration and promoting ecosystem resilience.
Keywords: endemic trees, species diversity, above-ground biomass, carbon sequestration, Dibudalan Forest