AUTEKOLOGI Dryobalanops lanceolata Burck DI KAWASAN HUTAN KINARUM DAN TAMPAAN, KALIMANTAN SELATAN

Abstract

The autecological study of kapur tree ( Dryobalanops lanceolata Burck) has been conducted in the Kinarum Forest of Tabalong and the Tampaan Forest of Balangan, South Kalimantan. This study aims to obtain the latest information about the existence of D. lanceolata and its habitat conditions. This study has been conducted in both forest areas by sampling using the pathway method. The total area observed was 0.6 ha in the Kinarum Forest and 0.2 ha in the Tampaan Forest. The results showed that D. lanceolata grew better in Kinarum Forest than Tampaan Forest. Tree of D. lanceolata is the most dominant in Kinarum Forest with INP = 46.26%, while in Tampaan Forest is ranked fourth (INP = 21.28%); the volume of D. lanceolata stands in Kinarum Forest (2910.55 m 3 /ha) is greater than in Tampaan Forest (90.55 m 3 /ha). The IS values for tree level are 0.55 (17 species), pole 0.18 (four species), saplings 0.08 (three species) and seedlings 0.10 (two species). The correlation value between the presence of D. lanceolata and the environmental variables was very weak to weak (<0.399). In general, D. lanceolata grows in a somewhat steep, steep, to very steep terrain with slopes heading west (-35 o to +15 o ), sandy loam soil texture, brown (7.5 YR 4/6) to brown or yellowish red (10 YR 5/6), pH 5.8­-6.5, C/N ratio 13 18, air temperature 30.7 + 1.36 o C, air humidity 55 + 18%, light intensity 1954, 64 + 2170.98 lux, and percent canopy 28.35 + 11.39%.