Pendugaan Biomassa dan Nilai Serapan Karbon Tegakan Pinus (Pinus merkusii) di Kawasan Wisata Geosite Sipinsur Kabupaten Humbang Hasundutan

Abstract

The Sipinsur Geosite Tourism Area in Pearung Village, Paranginan Sub-district, Humbang Hasundutan District is located on the hills of Lake Toba with an area of around 4.23 hectares and is at an altitude of 1,213 meters above sea level. Pine stands (Pinus merkusii) have high environmental service benefits, especially in terms of carbon sequestration. This study aims to determine the value of the biomass content and carbon absorption value of pine stands (Pinus merkusii) in the Sipinsur Geosite Tourism Area. At the study site, there were stands of pine (Pinus merkusii) which dominated the area with a total of 1,293 individuals. Data collection in this study was carried out using the census method, where each pine stand (Pinus merkusii) in the area was measured. The method of measuring standing biomass was carried out using a non-destructive method. The method for calculating the biomass content of pine stands (Pinus merkusii) uses selected allometric equations based on trunk diameter at breast height. The results showed that based on the allometric equation used, the total biomass content of pine stands (Pinus merkusii) in the Sipinsur Geosite Tourism Area was 994.82 tons or 235.18 tons/ha and total carbon absorption was 1,715.97 tons or 405.67 tons/ha.