Original Article | 2005, Vol.27, No.1, pp. 153-163
Estimating methane emissions from mangrove area in Ranong Province, Thailand
Sukanda Lekphet, Suwanchai Nitisoravut and Suwannee Adsavakulchai
pp. 153 - 163
Abstract
This study aimed to estimate methane emissions from the mangrove area of Ranong Province and to explore the factors affecting the emissions, as part of an attempt to evaluate methane contribution to the global methane budget. Methane was measured by using a closed chamber technique and analyzed by a gas chromatograph equipped with a flame ionization detector (FID). The results showed that the annual estimated methane emission was released at approximately 157.32 mg/m2. The amount of methane emission from this mangrove area was lower than in other previously studied areas. Emission rates varied seasonally with the highest rate in the rainy season followed by summer and cold seasons, during which the values were 0.52, 0.27, and 0.19 mg/m2/day, respectively. Seasonal variations of methane emission was related to several factors depending upon field conditions such as water conductivity, soil temperature, and water level.
