NGHIÊN CỨU ĐỊNH LƯỢNG CACBON TRONG RỪNG NGẬP MẶN VEN BIỂN XÃ HẢI LẠNG, HUYỆN TIÊN YÊN, TỈNH QUẢNG NINH

Abstract: In order to assess mangrove carbon sink for state management of greenhouse gas emissions/sequestration, provide a scientific and basis for implementing greenhouse gas reduction programs, e.g. REDD, REDD+, carbon stocks in three carbon pools, 1) above ground biomass, 2) below ground biomass and 3) soil were quantified for mangrove forest with dominant species of Rhizophora stylosa, Bruguiera gymnorhiza, Kandelia obovata, Aegiceras corniculatum, Avicennia marina in Hai Lang Commune, Tien Yen District, Quang Ninh Province, following the guideline by IPCC (2006). The results show that carbon accumulated in mangrove soil is about five times higher than the biomass carbon (above ground biomass and below ground biomass). The carbon accumolated in the soil was 124.85 tons/ha; the carbon accumulated in above ground biomass was 26.31 tons/ha; and the carbon accumulated in below ground biomass was 24.35 tons/ha. The total carbon stock in three carbon pools was 175.52 tonnes/ha (corresponding to 607.48 tons of CO2 sequestrated by one hectare of the mangroves). Large amount of carbon sequestrated in mangrove forest is a scientific basis for the development and implementation of mangrove afforestation projects, combined with conservation, sustainable management of mangroves, and the enhancement of mangrove carbon stocks in the coastal areas of Vietnam. Keywords: Avicennia marina, Aegiceras corniculatum, Bruguiera gymnorhiza, Kandelia obovata, Rhizophora stylosa, greenhouse gases, mangrove forest, carbon sequestration. Tai liệu tham khảo [1] Nguyễn Thị Hồng Hạnh (Chủ nhiệm), Bui Thị Thư, Nguyễn Thị Hoai Thương, Vũ Văn Doanh, Le Đắc Trường, Hoang Thị Hue, Le Thu Thủy, Đinh Văn Thuận, Phạm Hồng Tinh, Nguyễn Xuân Tung, 2016. Nghien cứu định lượng cacbon tich lũy để đanh gia khả năng tạo bể chứa cacbon của rừng ngập mặn ở vung ven biển Đồng bằng Bắc Bộ, Đề tai Khoa học va Cong nghệ cấp Bộ, ma số: TNMT.04.57/10-15. [2] Nguyen Thi Hong Hanh, Pham Hong Tinh, Mai Sy Tuan, 2016. Allometry and biomass accounting for mangroves Kandelia obovata Sheue, Liu & Yong and Sonneratia caseolaris (L.) Engler planted in coastal zone of red river delta, Vietnam, International Journal of Development Research Vol.06, Issue, 05 (2016): 7804-7808. [3] Komiyama A., Ong J.E., Poungparn S., 2008. Allometry, biomass, and productivity of mangrove forests: A review, Aquatic Botany, 89: 128-137. [4] IPCC, 2006. IPCC Guidelines for National Greenhouse Gas Inventories, Prepared by National Greenhouse Gas Inventories Programme, Eggleston H.S., Buendia L., Miwa K., Ngara T., Tanabe K., (eds). Published: IGES, Japan. [5] Le Văn Khoa, Nguyễn Xuân Cự, Bui Thị Ngọc Dung, Le Đức, Trần Khắc Hiệp, Cai Văn Tranh, 2000. Phương phap phân tich đất, nước, phân bon, cây trồng. Nha xuất bản Giao dục: 71-74. [6] Nguyen Thanh Ha, Yoneda R., Ninomiya I., Harada K., Tan D. V., Tuan M. S., Hong P. N., The effects of stand-age and inundation on the carbon accumulation in soil of mangrove plantation in Namdinh, northern Vietnam, The Japan society of tropical ecology, 14 (2004):  21-37. [7] Kauffman J. B., & Donato D., 2012. Protocols for the measurement, monitorring and reporting of structure, biomass and carbon stocks in mangrove forests. Bogor, Indonesia: Center for International Forestry Research (CIFOR). [8] Nguyễn Thị Hồng Hạnh, 2009. Nghien cứu khả năng tich lũy cacbon của rừng trang (Kandelia obovata Sheue, Liu & Yong) trồng ven biển huyện Giao Thủy, tỉnh Nam Định. Luận an tiến sĩ sinh học, Trường Đại học Sư phạm Ha Nội. [9] Fujimoto K., Miyagi T., Murofushi T., Adachi H., Komiyama A., Mochida Y., Ishihara S., Pramojanee P., Srisawatt W., Havanond S., 2000. “Evaluation of the belowground carbon sequestration of estuarine mangrove habitats, Southwestern Thailand”, In: Miyagi T. (ed.) Organic material and sea-level change in mangrove habitat, Tohoku-Gakuin University, Sendai, 980-8511, Japan, pp. 101-109. Albright L.J., 1976. In situ degradation of mangrove tissues (Note), N. Z. Journal of Marine and Freshwater Research 10, pp. 385-389.