Predicting Soil Organic Carbon as Affected by Climate Change Scenarios in the Natural Habitat of Halocnemum strobilaceum

Articles in Press

Document Type : Research Paper

Authors

1 Department of Natural Engineering, Malayer University, Malayer, Iran

2 Assistant prof, Department of Rangelands and watershed management, Malayer University, Malayer, Iran

3 Department of Arid and Mountainous Areas Revitalization, University of Tehran, Tehran, Iran

Abstract

Carbon sequestration is one of the ways to reduce the amount of carbon dioxide in the atmosphere and thereby reduce the negative consequences of climate change. In this research, the initial evaluation of the amount of carbon reserves in Halocnemum strobilaceum plant type in Mighan Arak desert and determining the validity of Rothamsted Carbon Model (RothC) as well as investigating future climate scenarios in estimating the changes in organic carbon stock were done. Sampling was done in the form of random-systematic design using 48 points in the topsoil. To evaluate the efficiency of the model, the coefficient of explanation (R2), correlation coefficient (r), root mean square error (RMSE) and also the efficiency index of the model implementation (PE) were used. The results showed that the highest and lowest amount of soil organic carbon in the habitats of this plant for each of the above scenarios, respectively, with the values of 19/1687, 20/0824, 20/0802 corresponding to the habitat of this plant in the west of Miqan desert and 9/7525, 10/2211, 10/22 tons per hectare in the south of Meyqan desert. Also, the results showed the reduction of all active carbon reserves, such as the reservoirs of degradable plant material, resistant plant material, microbial biomass, and soil humus organic matter equivalent to 14/167, 16/421, 13/976 and 1/91% respectively. It will decrease compared to the conditions of non-occurrence of climate change.

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Main Subjects

Iranian Journal of Soil and Water Research

Articles in Press, Accepted Manuscript
Available Online from 19 May 2025

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