Consequences of Climate Change on Greenhouse Gas Emissions in Citrus Orchards and Gardens (Case Study: Khuzestan Province)

Document Type : Original Article

Authors

1 Department of Climatology, Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran

2 Associate Professor, Department of Climatology, Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran

3 Department of Soil Science and Engineering, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran

10.22034/eiap.2022.158587

Abstract

Methane (CH4), nitrous oxide (N2O) and nitric oxide (NO) are considered to be the most important greenhouse gases. Present study is a practical-analytical study conducted with help of DAYCENT software to study flux of methane, nitrous oxide and nitric oxide emissions in citrus orchards of Dezful and Abadan groves in Khuzestan province. DAYCENT model program is written in FORTRAN and C programming languages ​​and runs with Unix / Linux platform. Results of methane flux simulation at Dezful station show release of 0.448 tons of methane per square meter per year, 0.111 tons of nitrous oxide per square meter per year and 0.152 tons of nitric oxide per square meter per year. Results of simulation of methane flux in Abadan station indicate release of 0.398 tons of methane per square meter per year, 0.014 tons of nitrous oxide per square meter per year and 0.129 tons of nitric oxide per square meter per year. Potential for global warming was then calculated for both study areas. Also, in order to evaluate accuracy of the model were used, statistical characteristics of maximum error, root of mean error squares, determination coefficient, model efficiency and remaining mass coefficient. According to statistics, DAYCENT provides acceptable results and has a good accuracy range in all three gases. Results showed that trend of increasing flux of methane, nitrous oxide and nitric oxide gases in Abadan groves is slower than Dezful citrus orchards.

Keywords


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