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Carbon storage in a restored mangrove forest in Can Gio Mangrove Forest Park, Mekong Delta, Vietnam

Dung, Luu Viet, Tue, Nguyen Tai, Nhuan, Mai Trong, Omori, Koji
Forest ecology and management 2016 v.380 pp. 31-40
sediments, river deltas, mangrove forests, tropics, trees, typhoons, climate change, carbon, carbon sinks, carbon sequestration, conservation practices, deforestation, emissions, information management, biomass, roots, Vietnam
Mangrove forests are considered to be the most important carbon (C) sink in the tropics. Evaluation of ecosystem C storage in restored mangrove forests will provide important information for management and conservation practices, climate change mitigation strategies and reduction of emissions from deforestation and forest degradation (REDD+) schemes. Despite this, a gap remains in the understanding of ecosystem C storage in Can Gio Mangrove Forest Park (CGM), the largest restored mangrove forest area in the Mekong Delta, Vietnam. In the present study, ecosystem C storage was quantified in CGM in growing mangrove forests, a typhoon disturbed forest, and a mudflat by measuring the biomass of trees, roots, downed woody debris, sediment organic C, and overall depth. The mean above-ground C storage was 102±24.7, 298.1±14.1 and 243.6±40.4MgCha−1 for fringe, transition, and interior forests, respectively. The high above- and below-ground C stocks resulted in high ecosystem C storage, ranging from 765 to 1026MgCha−1, with an overall mean of 910.7±32.3MgCha−1. The ecosystem C storage of the typhoon disturbed forest and mudflat was less than that of mangrove forests, with values of 573.5MgCha−1 and 619.8±24.3MgCha−1, respectively. At the regional scale, CGM can store up to 41.5TgC, which is equivalent to 152.3Tg of CO2e. The results of the present study suggest that mangrove restoration and conservation are effective tools for enhancing C storage and offsetting C emissions at both regional and national scales.