The Distribution of Anacardiaceae in Teluk Bahang Forest Reserve, Pulau Pinang

Abstract

To investigate the distribution of Anacardiaceae in Teluk Bahang Permanent Forest Reserve (TBPFR) in Pulau Pinang, all trees with a diameter at breast high (DBH) ? 5 cm were enumerated in a study site constituting 0.4 ha of the reserve. Seventy five individuals of Anacardiaceae (14% of all trees) are recorded. These individuals represent 4 genera and 5 species, namely, Mangifera pentandra, Mangifera macrocarpa, Gluta elegans, Campnosperma auriculatum and Swintonia floribunda. The mean density of Anacardiaceae within the study plots is 7.50±8.14 (mean±S.D.) per ha whereas the basal area (BA) calculated is 0.97 m²/0.40 ha. The importance value (IV_i) for Anacardiaceae is 81%. The estimated total aboveground biomass (TAGB) for Anacardiaceae is 24.24 ton/0.40 ha. A total of 333 Anacardiaceae saplings with a DBH < 5 cm are recorded. These saplings have been identified as juveniles of the genera Gluta (9.99%), Swintonia (84.90%) and Mangifera (5.11%).

Kajian dijalankan dalam kawasan seluas 0.4 ha di Hutan Simpan Teluk Bahang, Pulau Pinang ke atas pokok berukuran ketinggian paras dada (DBH) ? 5 cm. Tujuh puluh lima individu Anacardiaceae (14% daripada jumlah semua pokok) direkodkan, diwakili oleh 4 genus dan 5 spesies iaitu Mangifera pentandra, Mangifera macrocarpa, Gluta elegans, Campnosperma auriculatum dan Swintonia floribunda. Purata kepadatan Anacardiaceae di dalam plot adalah 7.50±8.14 (min±S.D.) per ha dengan keluasan pangkal 0.97 m²/0.40 ha dan nilai kepentingan (IV_i) 81%. Nilai anggaran biojisim atas tanah Anacardiaceae adalah 24.24 tan/0.40 ha. Di samping itu, sejumlah 333 juvenil pokok Anacardiaceae dengan ukuran DBH < 5 cm telah direkodkan dan dikenalpasti daripada genera Gluta (9.99%), Swintonia (84.90%) dan Mangifera (5.11%).