Estimation of Above Ground Carbon Sequestration in Trembesi (<i>Albizia saman</i>) and Johar (<i>Senna siamea</i>) at PT Multi Harapan Utama, East Kalimantan

Abstract

The open-pit mining method has a very large ecological impact. It causes the loss of forest vegetation which decreases CO2 absorption. Measuring the amount of carbon stored in plant biomass can represent the amount of CO2 that can be absorbed in the atmosphere. The objective of this research is to determine the carbon sequestration of Albizia saman and Senna siamea in different age classes at PT MHU Busang Jonggon Block, Kukar, East Kalimantan. Estimation of carbon sequestration in the stands of A. saman and S. siamea was carried out by non-destructive methods using biomass allometric equations while in understorey and litter using the destruction sampling. The results showed that the highest carbon absorption value of A. saman was 314.28 tons/ha which appear at six years old stands and the lowest value was 193.31 tons/ha at three years old stands while the highest carbon absorption value of S. siamea was 113.65 tons/ha which appear at nine years old stands and the lowest value was 24.64 tons/ha at three years old stands. A. saman could be more promising plant species than S. siamea according to its higher level of carbon sequestration and their high adaptation level. All data from this study could suggest several information for increasing carbon sequestration level in forest ecosystem as well as achieving forest rehabilitation purpose.

Tree biomass and carbon stock of Falcata (Falcataria moluccana (Miq.) Barneby & J.W. Grimes) along different altitudinal gradients in the Province of Agusan Del Norte, Philippines

“…These values are comparably larger than those reported by Tandug (2006), 66.1Mg C ha -1 for F. moluccana plantations of ages 5-25 years old. However, compared to other plantation species such as Samanea saman, the C stored in F. moluccana is comparatively lower (314.28Mg /ha, which appears at six years old), and the lowest value was 193.31Mg/ha) (Fajariani et al, 2020).…”

Flora and fauna in the areas around artisanal gold mining in Selogiri Sub-district, Wonogiri, Indonesia

“…Because of their ability to absorb carbon, plants in this family can be used as shade in the environment. For example, a six-year-old stand S. saman can store carbon up to 314.28 tons/ha, while S. siamea can store 113.65 tons/ha in a nine-year-old stand (Fajariani et al 2020) Plant composition and abundance influence the stability of vegetation communities (Isbell et al 2009). The results of the diversity index calculation showed that the vegetation community in the studied area was in a stable state.…”