Carbon sequestration potential of tree species in the reservation area of Kalinga State University [Philippines]
2016
Guiabao, E.G.
The study was conducted in the reservation area of the Kalinga State University located in Tawi, Bulbul, Rizal, Kalinga [Philippines] aimed to determine the above-ground biomass and carbon stock of the reservation area. Methodologies used include the measurement of trees at the diameter at breast height (dbh), gathering of corner points with the use of GPS and processing of data in Arc GIS. Above-ground biomass was computed through the allometric equation developed by Brown (1997). Results of the study revealed that site 6 had the highest biomass (388.59 t/ha) followed by site 3 (187.05 t/ha), site 5 (169.93 t/ha), site 4 (131.86 t/ha), site 2 (102.27 t/ha) and site 1 (76.40 t/ha). In terms of comparison of carbon stock, site 6 had the highest carbon stock which is equivalent to 174.87 t/ha followed by site 3 (84.17 t/ha), site 5 (76.47 t/ha), site 4 (59.34 t/ha), site 2 (46.02 t/ha) and lowest at site 1 (34.38 t/ha). Majority of the sites fall under the optimum pH value. The reservation area has a good nitrogen level since majority of the species are nitrogen fixing trees (ipil-ipil). The reservation area has a mean of 14.5 ppm. Based on Phosyn Chemicals Limited (1987, cited by Palijon, 1998), the guideline level for phosphorus is 50 ppm. The area is described as moderately low level of phosphorus and high level of potassium content which has a mean of 509 ppm. Further, based from Phosyn Chemicals Limited (1987, cited by Palijon, 1998), the guideline level for potassium is 200 ppm.
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