Investigating Seasonal Changes and the Impact of Rangeland Restoration Measures on Carbon Dioxide Emissions (Case Study: Sardasht Rangelands, Zeidon, Behbahan Township)

جغرافیا و مخاطرات محیطی

Article 6, Volume 13, Issue 3 - Serial Number 51, November 2024, Pages 129-149   

Document Type: Research Article

DOI: 10.22067/geoeh.2023.84546.1415

Authors

Zahra Kharadmehr¹; Sara Farazmand^{* 2}; Saheb Khordehbin³

¹Master& Degree in Rangeland and Watershed Management, Department of Rangeland and Watershed Management, Faculty of Natural Resources, Khatam Al Anbia Behbehan University of Technology, Behbehan, Iran.

²Assistant Professor, Department of Rangeland and Watershed Management, Faculty of Natural Resources, Behbehan Khatam Alanbia University of Technology, Behbehan, Iran.

³PhD in Soil Science, Khatam Al Anbia University of Technology, Behbahan, Iran.

Abstract

Carbon dioxide is one of the most important gases in the atmosphere contributing to global warming. However, the impact of restoration efforts on carbon emissions and carbon sequestration has received little investigation in many regions of the world. In this context, the present study was conducted in the mountainous area of Zeidon, Behbahan township, to examine the effects of restoration measures on soil carbon emissions.
To achieve this goal, three specific zones were selected: a control area (without rehabilitation), an area with shrub planting, and a contour furrow area. In each of these zones, four 100-meter transects were established. Along each transect, carbon emission measurements were taken from four designated plots using alkaline traps and the closed chamber method. Measurements were conducted in the summer, autumn, and winter seasons to assess seasonal variations in carbon emissions.
The findings revealed that carbon emissions from the untreated pasture were significantly higher than those from the shrub planting and contour furrow treatments. The control treatment exhibited the highest carbon emission rate of 1.15 grams per square meter per day, while the shrub planting treatment showed the lowest rate of 0.42 grams per square meter per day. No significant difference in carbon emissions was observed between the shrub planting and contour furrow treatments.
Seasonal analysis showed that carbon emissions were higher in summer compared to autumn and winter, with an average of 0.9 grams per square meter per day in summer and 0.55 grams per square meter per day in winter. In the control treatment, no significant seasonal variation in carbon emissions was detected. However, in the shrub planting treatment, carbon emissions exhibited a significant difference between summer and autumn compared to winter. Similarly, in the contour furrow treatment, emissions were significantly higher in summer than in autumn and winter.
The study also identified a significant positive relationship between temperature and carbon emissions in the shrub planting and contour furrow treatments, where an increase in temperature led to an increase in carbon emissions. However, no significant relationship was found between humidity and carbon emissions.
Overall, the results suggest that restoration practices such as shrub planting and contour furrowing can effectively reduce soil carbon emissions, thereby supporting efforts to mitigate atmospheric carbon dioxide levels and contributing to environmental management strategies.

Keywords

Soil Carbon Emissions; Restoration Measures; Contour Furrow; Shrub Planting; Seasonal Variation; Behbahan City

References

Abdalla, K., Mutema, M., Chivenge, P., Everson, C., & Chaplot, V. (2018). Grassland degradation significantly enhances soil CO₂ emission. Catena, 167, 284-292. https://doi.org/10.1016/j.catena.2018.05.010

Abdalla, K., Mutema, M., Chivenge, P., Everson, C., & Chaplot, V. (2022). Grassland rehabilitation significantly increases soil carbon stocks by reducing net soil CO2 emissions. Soil Use and Management, 38(2), 1250-1265. https://doi.org/10.1111/sum.12790   

Bilgen, S. (2014). Structure and environmental impact of global energy consumption. Renewable and Sustainable Energy Reviews, 38, 890-902. https://doi.org/10.1016/j.rser.2014.07.004 

Bogner, J. E., Spokas, K. A., & Chanton, J. P. (2011). Seasonal greenhouse gas emissions (methane, carbon dioxide, nitrous oxide) from engineered landfills: Daily, intermediate, and final California cover soils. Journal of environmental quality, 40(3), 1010-1020. https://doi.org/10.2134/jeq2010.0407

Booker, K., Huntsinger, L., Bartolome, J. W., Sayre, N. F., & Stewart, W. (2013). What can ecological science tell us about opportunities for carbon sequestration on arid rangelands in the United States?. Global Environmental Change, 23(1), 240-251. https://doi.org/10.1016/j.gloenvcha.2012.10.001

Brown, J., Angerer, J., Salley, S. W. Blaisdell, R., & Stuth, J. W. (2010). Improving Estimate of Rangeland Carbon Sequestration Potential in the US Southwest. Rangeland Ecology & Management, 63(1), 147-154. https://doi.org/10.2111/08-089.1

Conant, R. T., Cerri, C. E. P., Osborne, B. B., & Paustian, K. (2017). Grassland management impacts on soil carbon stocks: a new synthesis. Ecological Applications, 27(2), 662-668. https://doi.org/10.1002/eap.1473

Dean, C., Wardell-Johnson, G. W., & Harper, R. J. (2012). Carbon management of commercial rangelands in Australia: major pools and fluxes. Agriculture, Ecosystems & Environment, 148, 44-64. https://doi.org/10.1016/j.agee.2011.11.011

Gupta, N., Kukal, S. S., Bawa, S. S., & Dhaliwal, G. S. (2009). Soil organic carbon and aggregation under poplar based agroforestry system in relation to tree age and soil type. Agroforestry Systems 76, 27-35.

IPCC. (2014). Climate Change 2013 – The Physical Science Basis: Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press. http://dx.doi.org/10.1017/CBO9781107415324

Kamali, N., Siroosi, H., & Sadeghipour, A. (2020). Impacts of wind erosion and seasonal changes on soil carbon dioxide emission in southwestern Iran. Journal of Arid Land, 12,  690-700. https://doi.org/10.1007/s40333-020-0018-5

Leifeld, J., Ammann, C., Neftel, A., & Fuhrer, J. (2011). A comparison of repeated soil inventory and carbon flux budget to detect soil carbon stock changes after conversion from cropland to grasslands. Global Change Biology, 17(11), 3366-3375. https://doi.org/10.1111/j.1365-2486.2011.02471.x

Li, Y., Dong, S., Liu, S., Zhou, H., Gao, Q., Cao, G., … & Zhao, H. (2015). Seasonal changes of CO₂, CH4 and N2O fluxes in different types of alpine grassland in the Qinghai-Tibetan Plateau of China. Soil Biology and Biochemistry, 80, 306-314. https://doi.org/10.1016/j.soilbio.2014.10.026

Liptzin, D., Williams, M. W., Helmig, D., Seok, B., Filippa, G., Chowanski, K., & Hueber, J. (2009). Process-level controls on CO2 fluxes from a seasonally snow-covered subalpine meadow soil, Niwot Ridge, Colorado, Biogeochemistry, 95, 151–166. https://doi:10.1007/s10533-009-9303-2

Merbold, L., Steinlin, C., & Hagedorn, F. (2013). Winter greenhouse gas fluxes (CO2, CH4 and N2O) from a subalpine grassland, Biogeosciences, 10, 3185–3203. https://doi.org/10.5194/bg-10-3185-2013 

Nian, V., Chou, S. K., Su, B., & Bauly, J. (2014). Life cycle analysis on carbon emissions from power generation – The nuclear energy example. Applied Energy, 118, 68-82. https://doi.org/10.1016/j.apenergy.2013.12.015 

Rey, A., Pegoraro, E., Oyonarte, C., Were, A., Escribano, P., & Raimundo, J. (2011). Impact of land degradation on soil respiration in a steppe (Stipa tenacissima L.) semi-arid ecosystem in the SE of Spain. Soil Biology and Biochemistry, 43(2), 393-403. https://doi.org/10.1016/j.soilbio.2010.11.007

Romero-Uribe, H. M., López-Portillo, J., Reverchon, F., & Hernández, M. E. (2022). Effect of degradation of a black mangrove forest on seasonal greenhouse gas emissions. Environmental Science and Pollution Research, 29, 11951-11965. https://doi.org/10.1007/s11356-021-16597-1

Sadeghipour, A., Kamali, N. & Joneidi, H. (2013). Effects of rangeland mechanical reclamation activities on seasonal and monthly carbon emission (Case study: Sorkhe, Semnan province). Rangeland, 7(3), 222-229. [In Persian]

Schindlbacher, A. , Zechmeister-Boltenstern, S., Glatzel, G., & Jandl, R. (2007). Winter soil respiration from an Austrian mountain forest. Agricultural and Forest Meteorology,146, 205–215. https://doi.org/10.1016/j.agrformet.2007.06.001

Subak, S. (2000). Agricultural soil carbon accumulation in North America: considerations for climate policy. Global Environmental Change, 10(3), 185-195. https://doi.org/10.1016/S0959-3780(00)00026-1   

Traoré, S., Ouattara, K., Ilstedt, U., Schmidt, M., Thiombiano, A., Malmer, A., & Nyberg, G. (2015). Effect of land degradation on carbon and nitrogen pools in two soil types of a semi-arid landscape in West Africa. Geoderma, 241, 330-338. http://dx.doi.org/10.1016/j.geoderma.2014.11.027

Yu, H., Li, Y., Oshunsanya, S. O., Are, K. S., Geng, Y., Saggar, S., & Liu, W.) 2019(. Re-introduction of light grazing reduces soil erosion and soil respiration in a converted grassland on the Loess Plateau, China. Agriculture, Ecosystems & Environment, 280, 43-52. https://doi.org/10.1016/j.agee.2019.04.020