TOTAL KARBON BERDASARKAN TINGKAT KESEHATAN MANGROVE DAN VALUASI EKONOMI KARBON DI KAWASAN TAHURA BALI

Abstract

Mangrove ecosystems play a crucial role as carbon sinks and key components of blue carbon systems in mitigating global climate change. This study aims to: (1) assess the health condition of mangroves in Tahura Ngurah Rai; (2) analyze the total carbon storage capacity across three different locations; and (3) estimate the economic valuation of stored carbon within the mangrove ecosystem.Data were collected through vegetation surveys at three observation stations with a total of 30 plots. The analysis involved calculating the Mangrove Health Index (MHI), above- and below-ground biomass, and carbon content, including soil carbon. A Two-Way ANOVA was employed to examine the effects of mangrove health status and dominant genus (Rhizophora and Sonneratia) on carbon storage. Additionally, carbon economic valuation was calculated using two approaches: the voluntary carbon market (Rp 80.000 per ton CO₂e) and the compliance market (Rp 211.680 per ton CO₂e). The results indicate a variation in mangrove health conditions ranging from Poor to Excellent. The highest total carbon stock was found at Station 1 (314 tons/ha), while Station 3 had the lowest (204.52 tons/ha). The genus Sonneratia contributed more significantly to carbon accumulation than Rhizophora. The carbon valuation ranged from Rp 227.93 million/ha (voluntary market) to Rp 583.39 million/ha (compliance market). These findings highlight the substantial potential of the Tahura Ngurah Rai mangrove ecosystem to support blue carbon initiatives and carbon-based conservation programs.