Above ground biomass after 39 years logging in Kintap Research Forest, South Kalimantan

• Published in: IOP conference series. Earth and environmental science 2023-05, Vol.1181 (1), p.12001
• Main Authors: Qirom, Muhammad Abdul, Halwany, Wawan, Lestari, Fajar, Rachmanadi, Dony
• Format: Article
• Language: English
• Subjects: Area; Biomass; Carbon; Carbon sequestration; Diameters; Ecological succession; Estimation; Forestry research; Fragmentation; Habitat fragmentation; Land degradation; Logging; Plant species; Species diversity; Trees
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1181/1/012001

Land degradation causes the fragmentation of forest areas. The fragmentation can be in the form of a decrease in species diversity and carbon storage in an area including logged-over areas. This study aims to obtain stand abundance, basal area, and potential of above ground biomass that can be used in estimating natural recovery in logged-over areas. Stand measurements were carried out in 3 different areas with the distance of the plot from the road as a differentiating factor. The measurement parameters include tree species, diameter, and tree height with the smallest diameter being 10 cm. Making plots at each location covering an area of 1 ha with an observation sub-plot measuring 20 m x 20 m (400 m2). Estimation of carbon storage used the allometric model compiled by Brown, Ketterings, and Basuki. The results showed that the biomass potential reached 190 tones/hectares – 290 tones/hectares. This potential is mostly contributed by trees with a diameter of more than 20 cm. Trees with a diameter of 20 cm accounted for more than 50% of the total biomass. This condition indicates that silvicultural technique in the form of maintaining the remaining stands after felling are very necessary for accelerating the growth of small-diameter trees so that natural succession can occur more quickly.