اثر نوع گونه گیاهی و عملیات اصلاح مرتع بر ظرفیت تثبیت کربن مراتع بوته‌زار دهاقان، استان اصفهان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس پژوهشی بخش تحقیقات حفاظت خاک و آبخیزداری، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان اصفهان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اصفهان، ایران

2 دانشیار، پژوهشکده حفاظت خاک و آبخیزداری، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

    افزایش انتشار گازهای گلخانه‌ای در قرن گذشته منجر به بهم ریختن تعادل طبیعی چرخه کربن و افزایش نگرانی شده است. ازاین‌رو، این پژوهش با هدف ارزیابی نوع گونه‌های گیاهی مرتعی بومی و دست‌کاشت در پروژه‌های بیولوژیکی اصلاح مرتع بر ظرفیت تثبیت کربن در مراتع بوته‌زار شهرستان دهاقان انجام شد. بدین‌منظور دو پروژه بیولوژیک شامل بذرکاری ردیفی گیاه آگروپایرون (Agropyron trichophorum) با سابقه 17 سال در مراتع بوته‌زار گلیسار و کپه‌کاری جاشیر (Prangos ferulacea) با سابقه 10 سال در مراتع بوته‌زار آستانه سفلی بررسی شد. برای انجام تحقیق نمونه‌برداری از سایت‌های مطالعاتی و شاهد در بهار 1392 انجام شد. آزمایش‌های تعیین انباشت کربن برای نمونه‌های گیاهی و لاشبرگ به روش احتراق و برای نمونه‌های خاک به روش واکی-بلاک انجام شد و میزان ذخیره کربن در هریک از مناطق مورد ارزیابی قرار گرفت. نتایج پژوهش نشان داد که طی مدت اجرای پروژه‌های اصلاح مرتع، انباشت کربنی در نتیجه عملیات بیولوژیکی بذرکاری ردیفی آگروپایرون در منطقه گلیسار 4/37 تن در هکتار (به‌طور متوسط 2/2 تن در هکتار در سال) و در نتیجه کپه‌کاری جاشیر انباشت کربنی در منطقه آستانه 1/10 تن در هکتار (به‌طور متوسط 01/1 تن در هکتار در سال) نسبت به مناطق شاهد افزایش داشته است. به‌طورکلی می‌توان بیان کرد که پروژه بذرکاری ردیفی آگروپایرون از لحاظ افزایش تثبیت کربن موفق‌تر از کپه‌کاری جاشیر بوده است. همچنین نتایج پژوهش نشان داد که گونه‌هایAstragalus verus و Bromus tomentellus نیز ظرفیت بالایی از نظر تثبیت کربن نسبت به بسیاری از گونه‌های مرتعی در پروژه‌های اصلاح مرتع دارند.

کلیدواژه‌ها


عنوان مقاله [English]

The impacts of plant species and rangeland practices on the carbon sequestration capacity (Case study: Dehaghan watershed, Isfahan province)

نویسندگان [English]

  • Vahid Chitsaz 1
  • Yahya Parvizi 2
1 Senior Research Expert, Soil Conservation and Watershed Management Research Department, Isfahan, Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran
2 Associate Professor, Soil Conservation and Watershed Management Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
چکیده [English]

The increase in greenhouse gases emission over the last century has led to perturbation in the carbon cycle and has increased concerns. Therefore, the present study evaluated rangeland biological rehabilitation practices with native and cultivated plant species on carbon sequestration in Dehaghan region bushlands. For this purpose, two biological projects, including seeding Agropyron trichophorum in the Glisar region with a 17-year-old record and pit-seeding of Prangos ferulacea with a 10-year-old record in the Astane Sefla region were evaluated. Soil and plant sampling was carried out in the spring of 2013. Afterward, the carbon concentrations in soil and plant samples were evaluated based on Walkley black and Combustion Methods, respectively. Results also showed that the carbon sequestration capacity in the seeding of A. trichophorum in the Glisar region and pit-seeding of P. ferulacea in the Astane Sefla region has increased to 37.4 (on average 2.2 ton/ha/year) and 10.1 (in average 1.01 ton/ha/year) comparing to control region, respectively. In general, A. trichophorum seeding project has been more successful than P. ferulacea pit-seeding in terms of increasing carbon stabilization. The results also showed that Astragalus verus and Bromus tomentellus species have a high potential for carbon stabilization compared to many rangeland species in rangeland improvement projects.

کلیدواژه‌ها [English]

  • Rangeland planting
  • biological practices
  • carbon concentration
  • Agropyron sp
  • Prangos sp
  • Abdi, N., Maddah Arefi, H. and Zahedi Amiri, G.H., 2008. Estimation of carbon sequestration in Astragalus rangelands of Markazi province (Case study: Malmir rangeland in Shazand region). Iranian Journal of Range and Desert Research, 15(2): 269-282 (In Persian with English summary).
  • Ariapour, A., Mehrabi, H.R. and Dehpahlevan, A., 2016. The impacts of rangeland projects on rangeland produces, condition and tendency (Case Study: Nahavand, Khezel Rangelands). Iranian Journal of Rangeland, 10(2): 1-10 (In Persian).
  • Burck, J., Marten, F. and Bals, C., 2014. The Climate Change Performance Index (CCPI) 2014: A comparison of the 58 top CO2 emitting nations. Climate Action Network Europe. Brussels, Belgium, pp: 29.
  • Chitsaz, V., Eskandari, Z.A., Salehpour, S. and Matboe Riahi, M.R., 2013. Determination of the effects and potential of watershed management biological practices on carbon sequestration for climate change mitigation (Isfahan). Press, Soil Conservation and Watershed Management Institute, 85p (In Persian with English summary).
  • Energy Information Administration (EIA), 2006. International Energy Outlook 2006. http://www.eia.doe.gov/oiaf/ieo/index.html
  • Eskandari-Shahraki, A., Kiani, B. and Iranmanesh, Y., 2016. Effects of different landuse types on soil organic carbon storage. Iranian Journal of Forest and Poplar Research, 24(3): 379-389. (In Persian with English summary)
  • , 2016. Hunger, poverty and climate change: the challenges today and tomorrow
  • Figueroa, J.D., Fout, T., Plasynski, S., McIlvried, H. and Srivastava, R.D., 2008. Advances in CO2 capture technology—the US Department of Energy's Carbon Sequestration Program. International journal of greenhouse gas control, 2(1): 9-20.
  • Gheitury, M., Parvizi Y., Heshmati, M. and Ahmadi, M., 2018. Comparing the effects of different rangeland utilization on carbon sequestration in Kermanshah Province, Iran. Iranian Journal of Range and Desert Research, 25(1): 44-53 (In Persian with English summary).
  • Gheitury, M., Heshmati, M. and Parvizi Y., 2019. Evaluating the effect of tropical range management on the development of soil properties and carbon stores (Case Study: south of Ghasreshirin in Kermanshah province). Geography and Sustainability of Environment, 8 (3): 1-12. (In Persian with English summary)
  • Hajabbasi, M.A., Besalatpour, A. and Melali, A.R., 2008. Impacts of converting rangelands to cultivated land on physical and chemical properties of soils in west and southwest of Isfahan. Iranian Journal of Water and Soil Science, 11(42): 525:534 (In Persian with English summary).
  • Heidari, P., Hojati, S., Enayatizamir, N. and Rayatpisheh, A., 2017. Effects of land use change on C stock and some biological characteristics of soils in parts of Rakaat watershed, east of Khuzestan province. Iranian Journal of Range and Desert Research, 24(1): 181-192. (In Persian with English summary)
  • IPCC, IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, 2019.
  • Joneidi, H., Nazari, Z., Karami, P. and Gholinejad, B., 2014. The impact of rangelands conversion to dry-farming on the loss of organic carbon and nitrogen of soil in the vicinity of Sanandaj. Journal of Environmental Erosion Research, 4(3): 19-32. (In Persian with English summary)
  • Lal, R., 2008. The role of soil organic matter in the global Carbon cycle. Soil and Environment Pollution, 116: 353–362.
  • Marsaglia, G., Tsang, W.W. and Wang, J., 2003. Evaluating kolmogorov’s distribution. Journal of statistical software, 8(18): 1-4.
  • McLauchlan, K., 2006. The nature and longevity of agricultural impacts on soil carbon and nutrients: a review. Ecosystems, 9(8): 1364-1382.
  • Naseri, S., 2020, Investigating the effect of biomechanical operations on carbon stocks and sequestration in the Kardeh basin. Iranian Journal of Range and Desert Research, 27(4): 716-729 (In Persian with English summary).
  • Niknahad, H., Aghtabye, A. and Akbarlou, M., 2018. Effects of grazing exclusure on some soil properties erodibility and carbon sequestration (Case study: Bozdaghin rangelands, North Khorasan, Iran). Iranian Journal of Range and Desert Research, 24(4): 708-718 (In Persian with English summary).
  • Pahlavan Yali, Z., Zarrinkafsh, M. and Moeini, A., 2016. Quantitative estimation of soil carbon sequestration in three land use types (Orchard, Paddy Rice and Forest) in a part of Ramsar lands, northern Iran. Iranian Journal of Water and Soil, 30(3): 758-768 (In Persian with English summary).
  • Parvizi, Y., Gheituri, M., Bayat, R., Shadmani, A.R. and Partovi, A., 2018. Carbon sequestration potential of different range planting practices in different geographical areas of the country. Iranian Journal of Range and Desert Research, 25(2): 310-323 (In Persian with English summary).
  • Rabiei, M., 2016. Measurement and assessment of rangeland. Press, Payame Noor Uinversity, 250p (In Persian).
  • Ruxton, G. D., 2006. The unequal variance t-test is an underused alternative to Student's t-test and the Mann–Whitney U test. Behavioral Ecology, 17(4): 688-690.
  • Walkley, A. and Black, I.A., 1934. An examination of the Degtjareff method for determining soil organicmatter, and a proposed modification of the chromicacid titration method.Journal of Soil Science, 37:29–38.
  • Zahedi, S., 2018. Investigation the impacts of mechanical range and watershed management operations on carbon sequestration in Gav-dareh watershed, Kurdistan province. Iranian Journal of Watershed Management Research, 10(18): 47-55 (In Persian with English summary).