TAILIEUCHUNG - Modeling temporal variability of soil CO2 emissions from an apple orchard in the Harran Plain of southeastern Turkey

Broad interest in reducing greenhouse gas emissions requires a better understanding of controls on carbon dioxide (CO2) release under different agricultural management practices. The objective of this study was to investigate and model seasonal variation of soil CO2 emissions from an apple orchard field (Malus domestica L. ‘Starkrimson’). | Turkish Journal of Agriculture and Forestry Turk J Agric For (2013) 37: 744-761 © TÜBİTAK doi: Research Article Modeling temporal variability of soil CO2 emissions from an apple orchard in the Harran Plain of southeastern Turkey 1, 2 3 Ali Volkan BİLGİLİ *, Güzel YILMAZ , Ali İKİNCİ Department of Soil Science and Plant Nutrition, Agriculture Faculty, Harran University, Şanlıurfa, Turkey 2 Department of Environmental Engineering, Engineering Faculty, Harran University, Şanlıurfa, Turkey 3 Department of Horticulture, Agriculture Faculty, Harran University, Şanlıurfa, Turkey 1 Received: Accepted: Published Online: Printed: Abstract: Broad interest in reducing greenhouse gas emissions requires a better understanding of controls on carbon dioxide (CO2) release under different agricultural management practices. The objective of this study was to investigate and model seasonal variation of soil CO2 emissions from an apple orchard field (Malus domestica L. ‘Starkrimson’). Soil CO2 emissions from an apple orchard managed with common practices were measured weekly over a 3-year period (May 2008 to May 2011) from both under the crowns of trees (CO2-UC) and between rows (CO2-BR) using a soda lime technique and were modeled using available environmental data. The study area is located in the Harran Plain of southeastern Turkey and has a semiarid climate. The weekly soil CO2 emissions ranged from to 1428 kg week–1 ha–1, from to 835 kg week–1 ha–1, and from to 1087 kg week–1 ha–1 for CO2-UC, CO2-BR, and the average of both (CO2-AVG), respectively, and showed a pronounced seasonal pattern with the lowest emissions in winter (January and February) and the highest emissions during the growing season (April to December). Relative to 2008 emissions, 2009 CO2 emissions increased by approximately 75%, and 2010 emissions increased by approximately 88%. .

• Nông nghiệp
• Soil CO2 emission
• Multivariate statistical analysis
• Principal component analysis
• Principal component regression
• Multivariate adaptive regression splines
• Global warming
• CO2 emission
• Red loam
• Red loam soil of Kerala
• Tillage methods on CO2 emission
• soil temperature
• O2 content
• Soil moisture
• Microbial respiration