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Tree biomass and carbon stock of a community-managed mangrove forest in Bohol, Philippines
Leni D. Camacho,Dixon T. Gevana,Antonio P. Carandang,Sofronio C. Camacho,Edwin A. Combalicer,Lucrecio L. Rebugio,윤여창 한국산림과학회 2011 Forest Science And Technology Vol.7 No.4
Mangrove plays a significant role in climate change mitigation particularly in carbon absorption and minimizing the detrimental impacts of sea level rise, salt-water intrusion and tidal surges. In Bohol Province, Philippines, a small coastal island community known as Banacon is one of the successful cases in mangrove reforestation. Recognizing the site’s potential for a carbon sequestration project, a biomass and carbon stock assessment of mangrove trees was done. Using standard sampling techniques and allometric equations, tree carbon storage was measured across stand ages, namely 15-, 20- and 40-year-old plantations. Mature natural stands were also included in the assessment. By estimate, the 40-year-old plantation has the largest carbon density with 370.7 ton ha71, followed by the 15-year-old plantation with 208.5 ton ha71, 20-year-old plantation with 149.5 ton ha71, and lastly by natural stand with 145.6 ton ha71. Overall, Banacon mangroves are in a vigorous condition of storing vast amount of carbon. Local community and government should therefore sustain their commitment in coastal reforestation activities in order to enhance the mangrove carbon stocks. Policies and programs that can help provide incentives and livelihoods to local people who are largely dependent on mangroves should likewise be explored in order to sustainably reap the economic and ecological benefits of conserving mangrove forest.
Traditional forest conservation knowledge/technologies in the Cordillera, Northern Philippines
Camacho, Leni D.,Combalicer, Marilyn S.,Yeo-Chang, Youn,Combalicer, Edwin A.,Carandang, Antonio P.,Camacho, Sofronio C.,de Luna, Catherine C.,Rebugio, Lucrecio L. Elsevier 2012 FOREST POLICY AND ECONOMICS Vol.22 No.-
Economic valuation for sustainable mangrove ecosystems management in Bohol and Palawan, Philippines
Antonio P. Carandang,Dixon T. Gevana,Leni D. Camacho,Josefina T. Dizon,Sofronio C. Camacho,Catherine C. de Luna,Florencia B. Pulhin,Edwin A. Combalicer,Floribel D. Paras,Rose Jane J. Peras,Lucrecio L. 한국산림과학회 2013 Forest Science And Technology Vol.9 No.3
The study used the total economic value as a framework for estimating the values of the different uses of mangroves in Palawan and Bohol, Philippines. Market surveys were conducted to estimate the revenues from the major mangrove products collected in the two study sites. Contingent valuation method and travel cost method questionnaires were used in the survey to determine the biodiversity and recreational values (in Philippine pesos or PHP). Results of the market survey showed that the highest direct use value per year was estimated for Banacon site in Bohol with PHP 33.368 million per year as compared to Kamuning site in Palawan (PHP 25.521 million). The highest value of benefit for Banacon came from crab catch with PHP 13.23 million. Mollusk catch gave higher benefits to Kamuning, amounting to PHP 17.65 million. In terms of the values of benefits from shrimp and fish catch, the values for Banacon were higher than those in Kamuning site (PHP 8.06 million and PHP 6.38 million, respectively for Banacon, and PHP 4.32 million and PHP 0.16 million, respectively, for Kamuning). Nipa thatch was the source of the third highest value of benefit for Kamuning amounting to PHP 2.42 million. The result of the contingent valuation analysis done (combining the data sets from Palawan and Bohol) using a least-squares method (i.e., bid function approach) showed a mean willingness-to-pay amount of PHP 44/month per individual. The different factors affecting the willingness to pay (25% level) include education, income and information (new). In terms of the recreation/ecotourism value of mangroves, the estimated values in Banacon, Bohol, and Kamuning, Palawan, were PHP 83,079 and PHP 2769, respectively.