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Solid Earth An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/se-2017-20
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
10 Mar 2017
Review status
This discussion paper is under review for the journal Solid Earth (SE).
Simulating Carbon Sequestration using Cellular Automata and land use assessment; Case of: Karaj City, Iran
Ali Khatibi1, Sharareh Pourebrahim1, and Mazlin Mokhtar2 1Department of Environmental Sciences, Faculty of Natural Resources, University of Tehran, Iran
2Institute for Environment and Development (LESTARI), National University Malaysia (UKM), 43300, Malaysia
Abstract. In this study, in the city of Karaj five classes of land use-cover including residential, agriculture, rangeland, forest and barren areas were considered and randomly in each class a total of 20 points were selected and vegetation and soil samples were taken. In plant samples, the amount of carbon sequestration was determined by calculating the amount of organic carbon by dry weight and in soil samples, the amount of carbon sequestration was determined by using Walleky and Black method, too. For each area, the average value of carbon sequestration of samples was introduced as carbon sequestration index of that class. Average values for each category were determined as an indicator of carbon sequestration of that class and then by using the DINAMICA EGO software a simulation was conducted using cellular automata approach to simulate changes in the classes of land use-cover in the city of Karaj. Finally, by using carbon sequestration index and the results of the simulation, changes in carbon sequestration in each class were calculated. On this basis, it was found that in the 15-year period from 2014 to 2029, not considering the residential class as the effective use of carbon sequestration, the greatest amount of carbon sequestration was found in the agricultural class and the lowest carbon sequestration was found in barren area. Also, agriculture class will be faced with the huge reduction of carbon sequestration, because of expansion of the residential area.

Citation: Khatibi, A., Pourebrahim, S., and Mokhtar, M.: Simulating Carbon Sequestration using Cellular Automata and land use assessment; Case of: Karaj City, Iran, Solid Earth Discuss., https://doi.org/10.5194/se-2017-20, in review, 2017.
Ali Khatibi et al.
Ali Khatibi et al.
Ali Khatibi et al.

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Short summary
The speed of land use changes is much higher than in the past, which led to many changes in the environment and ecological processes. These changes cause some changes in the climate, the amount of pollution and biodiversity. Monitoring and modeling historical situation of the region can be used to anticipate the negative effects of these changes in order to protect resources. Agriculture class will be faced with the huge reduction of carbon sequestration, because of expansion of the residential.
The speed of land use changes is much higher than in the past, which led to many changes in the...
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