METHANE EMISSION FROM PADDY SOIL IN RELATION TO SOIL TEMPERATURE IN TROPICAL REGION

Autor:	I Azni, M.S. Umi Kalsom, A R Nor Aini, C M Hasfalina, P Fazli, M Z Mohamed Azwan
Rok vydání:	2016
Předmět:	Irrigation geography geography.geographical_feature_category Soil organic matter General Engineering Growing season Wetland engineering.material Methane chemistry.chemical_compound Agronomy chemistry Greenhouse gas Carbon dioxide engineering Environmental science Fertilizer
Zdroj:	Jurnal Teknologi. 78
ISSN:	2180-3722 0127-9696
Popis:	Methane (CH4) is 21 times more powerful as a greenhouse gas than carbon dioxide. Wetlands including flooded paddy fields are one of the major sources for this gas. Paddy fields are responsible for producing 25 to 54 Tg of CH4 annually. Methane emission rate could be affected by several factors such as irrigation pattern, fertilizer type, soil organic matter and soil temperature. Among them, soil temperature is a determining factor which deserves to be investigated. This study performed with the aim of understanding the effect of soil temperature on the methane emission rate from paddy soil in a short period of time (hourly) and long term (during rice growing season). The results of this study suggest that soil temperature could control the amount of methane emission and there is a positive and strong correlation in both soil temperature and methane emission pattern in short period of time. However, in case of long term trend, other factors such as water management and plant age decreased this correlation from 0.768 to 0.528.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::580231e869c2a2d123a3cd57cca130c9 https://doi.org/10.11113/jt.v78.7273 Zobrazit plný text záznamu