University of Tabriz Journal of Agricultural Science and Sustainable Production 2476-4310 33 1 2023 04 25 Evaluation of some soil properties in agricultural lands of Semnan province and its effect on greenhouse gas emissions trends (Case study: Bastam region)) Evaluation of some soil properties in agricultural lands of Semnan province and its effect on greenhouse gas emissions trends (Case study: Bastam region)) 219 236 16254 10.22034/saps.2022.48507.2754 FA Mirnaser Navidi Soil and Water Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran Mansour Chatrenour Department of Soil Science and Engineering, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran Nasrin Moradimajd Department of Climatology, Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran Javad Seyed Mohammadi Journal Article 2021 10 20 Objectives: In recent years, the increased of greenhouse gases due to agricultural activities has been significant. The purpose of this study is to investigate the extent of carbon dioxide and methane emissions in agricultural lands of Semnan province and Bastam region, including: apricots, grapes, wheat, barley, corn, forage and pastures.<br />Materials and Methods: For this purpose, soil samples were taken from a depth of 0-30 cm. Soil properties including salinity, pH, percentage of sand, silt and clay, organic matter, total nitrogen, phosphorus, potassium and calcium carbonate were measured. Closed static chambers were used for gas sampling and in each cultivated and used product, 3 to 5 points and total of 31 points were selected. Finally, the amount of greenhouse gas, global warming potential and environmental costs were calculated.<br />Results: Based on the results, the highest carbon dioxide emissions were observed for fodder corn in autumn with an average of 3 g / m2 / day and the lowest emissions for pastures in autumn with an average of 0.25 g / m2 / day. For methane gas, the results showed that forage corn in the two autumn seasons had the highest gas emissions with an average of 3 g / m2 / day and the lowest emissions for pastures in autumn with an average of 1.03 g / m2 / day. Objectives: In recent years, the increased of greenhouse gases due to agricultural activities has been significant. The purpose of this study is to investigate the extent of carbon dioxide and methane emissions in agricultural lands of Semnan province and Bastam region, including: apricots, grapes, wheat, barley, corn, forage and pastures.<br />Materials and Methods: For this purpose, soil samples were taken from a depth of 0-30 cm. Soil properties including salinity, pH, percentage of sand, silt and clay, organic matter, total nitrogen, phosphorus, potassium and calcium carbonate were measured. Closed static chambers were used for gas sampling and in each cultivated and used product, 3 to 5 points and total of 31 points were selected. Finally, the amount of greenhouse gas, global warming potential and environmental costs were calculated.<br />Results: Based on the results, the highest carbon dioxide emissions were observed for fodder corn in autumn with an average of 3 g / m2 / day and the lowest emissions for pastures in autumn with an average of 0.25 g / m2 / day. For methane gas, the results showed that forage corn in the two autumn seasons had the highest gas emissions with an average of 3 g / m2 / day and the lowest emissions for pastures in autumn with an average of 1.03 g / m2 / day. https://sustainagriculture.tabrizu.ac.ir/article_16254_70199de532ca7f9236f8cc420a20e3ac.pdf