BIODIVERSITAS ISSN: 1412-033X Volume 19, Number 6, November 2018 E-ISSN: 2085-4722 Pages: 2163-2174 DOI: 10.13057/biodiv/d190624 Vegetation analysis along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro Island, Philippines ELAINE LOREEN C. VILLANUEVA1,♥, INOCENCIO E. BUOT, JR.1,2,3 1School of Environmental Science and Management, University of the Philippines Los Baños. College, Laguna 4031, Philippines. Tel.: +63-49-536 2836, ♥email:
[email protected] 2Institute of Biological Sciences, College of Arts and Sciences, University of the Philippines Los Baños. College, Laguna 4031, Philippines 3Faculty of Management and Development Studies, University of the Philippines Los Baños. College, Laguna 4031, Philippines Manuscript received: 8 May 2018. Revision accepted: 3 November 2018. Abstract. Villanueva ELC, Buot, JrIE. 2018. Vegetation analysis along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro Island, Philippines. Biodiversitas 19: 2163-2174. The vegetation of Halcon Range is diverse, unique, and culturally important; however, there is a very limited information on its altitudinal distribution and structure, leading to the formation of land uses that trigger problem in sustainable management decisions for the mountain. This study analyzed the vegetation in land use types distribution along the altitudinal gradient of Mt. Ilong, Halcon Range, Mindoro, Philippines. Fourteen plots of 10 x 10m were established along the slope from 100m-1400m elevation. The tree species that were sampled from the plots were subjected to classification and ordination analyses. The dendrogram showed three distinct vegetation zones corresponding land use types: Zone I (agroforest land use zone), Lansium- Artocarpus-Swietenia-Ficus-Nephelium-Mangifera zone; Zone II (forest land use zone), Cyathea-Astronia-Syzygium-Garcinia-Ficus- Psydrax-Diplodiscus zone; and Zone III (forest land use zone), Agathis-Suli-Alitugba-Ardisia zone.