ظرفیت وزنی ذخایر کربن آلی خاک در ارتباط با تغییرات تنوع زیستی توده‌های طبیعی پارک جنگلی نور

نوع مقاله: علمی- پژوهشی

نویسنده

دکتری جنگل‌داری، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

 یکی از مهم‌ترین اصول مدیریت توسعه پاک، افزایش و یا حفظ موجودی ذخایر کربن آلی در اکوسیستم‌های طبیعی است. با توجه به این‌که حفظ تنوع زیستی نیز یکی از معیارهای اصلی توسعه پایدار محسوب می‌شود، پژوهش پیش‌رو در توده‌های طبیعی توسکا- انجیلی، پلت- انجیلی و اوجا- ممرز پارک جنگلی نور (مازندران) برای بررسی ارتباط بین مقادیر ترسیب کربن خاک و تنوع زیستی گیاهی انجام شد. هدف اصلی پژوهش این بود که آیا تغییرات تنوع زیستی گیاهی معرف مناسبی برای پایش صحیح ظرفیت وزنی ذخایر کربن خاک در جنگل مورد مطالعه محسوب می‌شود یا خیر. شاخص‌های رایج تنوع زیستی اشکوب‌های مختلف در قالب قطعه‌نمونه‌های 400 متر مربعی با پنج تکرار با توزیع کامل تصادفی در هر توده محاسبه شد و لایه‌های خاک (صفر تا 20 سانتی‌متری و 20 تا 40 سانتی‌متری) برای اندازه‌گیری کربن نمونه‌برداری شدند. نتایج حاکی از تغییرات معنی‌دار شاخص‌های تنوع زیستی پوشش‌های گیاهی در توده‌های مختلف بود. فقط غنای گونه‌ای و غلبه گونه‌ای اشکوب درختی در توده‌های مورد مطالعه تغییرات معنی‌داری نداشتند. نتایج نشان داد که در توده توسکا- انجیلی نسبت به توده‌های دیگر، به‌طور معنی‌داری ذخایر کربن آلی کمتری در افق‌های مختلف خاک وجود داشت، درصورتی‌که در توده پلت- انجیلی بیشترین ذخایر کربن آلی در افق‌های آلی و معدنی خاک وجود داشت. نتایج آزمون همبستگی پیرسون نشان داد که بین غلبه گونه‌ای پوشش درختی و ذخایر کربن لایه معدنی خاک ارتباط معنی‌داری وجود داشت که نشان می‌دهد تراکم جمعیت و پراکندگی درختان گونه‌های غالب توده در میزان ذخایر کربن لایه معدنی خاک تأثیرگذار بوده است. ظرفیت وزنی ذخایر کربن عمق‌های آلی و معدنی خاک با شاخص وفور و با شاخص یکنواختی پایلو فلور کف جنگل همبستگی معنی‌داری داشت. از این‌رو میزان پوشش و نحوه توزیع پایه‌های علفی در جنگل مورد مطالعه می‌تواند معرف ویژگی‌های مقادیر وزنی کربن ترسیب‌شده افق‌های مختلف خاک باشد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Potential weight of soil organic carbon pool in relation to variation of natural stands biodiversity in Noor Forest Park, Mazandaran province

نویسنده [English]

  • Ali Asqar Vahedi
Ph.D. Forestry, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
چکیده [English]

One of the most important principles of clean development management (CDM) is to maintain or increase organic carbon pool in the natural ecosystems. As keeping the biodiversity is one of the prominent criteria of sustainable development, this study was conducted to study the relationship between the amount of carbon sequestration and plant biodiversity in the natural stands of Alder-Ironwood (AI), Maple- Ironwood (MI) and Elm-Hornbeam (EH) in the Noor Forest Park, Mazandaran province. The main purpose was to see if variation of plant biodiversity represents the optimal monitoring of soil carbon stock in the studied forest. The common diversity indices related to the different plant storeys were calculated in the random distributed plots with 400 m2 and five repetitions in each stand. Furthermore, the 0- 20 and 20 – 40 cm soil depths were sampled in each stand to measure carbon factor. The results showed significant differences amongst the plant biodiversity indices of the studied stands. Only the index of species richness and species dominance of tree storey was not significantly different among the stands. As such, the findings showed that the AI stand had significantly less soil carbon stock in different soil layers compared to other stands; however, the soil organic carbon was significantly higher in the different soil depths in the MI stand. The results of Pearson’s correlation test showed a significant relationship between tree species dominance and mineral layer of soil carbon stock, implying that density and dispersion of dominant tree species in the stands prominently affect the carbon stock of the soil mineral layer. As such, the following results indicated that potential level of carbon pool of soil organic and mineral layers are significantly correlated with the abundance and evenness of herbal storey. Therefore, coverage and distribution of herbal species in the studied forest can be considered to represent the carbon pool weight in the different soil horizons.
 

کلیدواژه‌ها [English]

  • : Biodiversity
  • Carbon sequestration
  • clean development management
  • Noor forest park
  • tree and herbal coverage
- Cantarello, E., Newton, A.C. and Hill, R.A., 2011. Potential effects of future land-use change on regional carbon stocks in the UK. Environmental Science & Policy, 14: 40-52.

- Caparros, A. and Jacquemont, F., 2003. Conflicts between biodiversity and carbon sequestration programs: Economic and legal implications. Ecological Economics, 46: 143-157.

- Eshaghi Rad, J., Zahedi Amiri, G.H., Marvi Mohajer, M.R. and Matji, A., 2009. Relationship between vegetation and physical and chemical properties of soil in Fagetum communities (Case study: Kheiroudkenar forest). Iranian Journal of Forest and Poplar Research, 2: 175-187 (In Persian).

- Esmailzadeh, O. and Hoseini, S.M., 2012. Relationship between ecological species group and plant biodiversity indices in yew reserve of Afratakhteh. Iranian Journal of Environment Science, 43: 21-30 (In Persian).

- Faraji, F., Mataji, A., Babayi-Kafaki, S. and Vahedi, A., 2015. The relationship between plant diversity and above-ground biomass changes in Fagus orientalis L. forests (Case study: Hajikola-Tirankoli, Sari). Iranian Journal of Forest, 7(2): 151-165 (In Persian).

- Houghton, R.A., 2005. Aboveground forest biomass and the global carbon balance. Global Change Biology, 11: 945-958.

 - Jandl, R., Lindner, M., Vesterdal, L., Bauwens, B., Baritz, R., Hagedorn, F., Johnson, D.W., Minkkinen, K. and Byrne, K.A., 2007. How strongly can forest management influence soil carbon sequestration? Geoderma, 137: 253-268.

- Jimenez, J.J., Lal, R., Leblanc, H.A. and Russo, R.O., 2007. Soil organic carbon pool under native tree plantations in the Caribbean lowlands of Costa Rica. Forest Ecology and Management, 241: 134-144.

- Kirby, K.R. and Potvin, C., 2007. Variation in carbon storage among tree species: Implications for the management of a small-scale carbon sink project. Forest Ecology and Management, 246: 208-221.

- Koziell, I. and Swingland, I.R., 2002. Collateral Biodiversity Benefits Associated with ‘Free-market’ Approaches to Sustainable Land Use and Forestry Activities. In: Swingland, I.R. (Ed.). Capturing Carbon and Conserving Biodiversity: The Market Approach. Earthscan, London, 368p.

- Lal, R., 2005. Forest soils and carbon sequestration. Forest Ecology and Management, 220: 242-258.

- Leader-Williams, N., 2002. Animal Conservation, Carbon and Sustainability. In: Swingland, I.R. (Ed.). Capturing Carbon and Conserving Biodiversity: The Market Approach. Earthscan, London, 368pp.

- Mahmoudi Taleghani, E., Zahedi Amiri, G.H., Adeli, E. and Sagheb-Talebi, Kh., 2007. Assessment of carbon sequestration in soil layers of managed forest. Iranian Journal of Forest and Poplar Research, 15(3): 241-252 (In Persian).

- Mesdaghi, M., 2004. Plant Ecology. Jahad-e Daneshgahi Press, Mashhad, 187p (In Persian).

- Nave, L.E., Vance, E.D., Swanston, C.W. and Curtis, P.S., 2010. Harvest impacts on soil carbon storage in temperate forests. Forest Ecology and Management, 259: 857-866.

- Nguyen, H., Herbohn, J., Firn, J. and Lamb, D., 2012. Biodiversity-productivity relationships in small-scale mixed-species plantations using native species in Leyte province, Philippines. Forest Ecology and Management, 274: 81-90.

- Peichl, M. and Arain, M.A., 2006. Above-and belowground ecosystem biomass and carbon pools in an age-sequence of temperate pine plantation forests. Agricultural and Forest Meteorology, 140: 51-63.

- Peltoniemi, M., Thürig, E., Ogle, S., Palosuo, T., Schrumpf, M., Wutzler, T., Butterbach-Bahl, K., Chertov, O., Komarov, A., Mikhailov, A., Gärdenäs, A., Perry, C., Liski, J., Smith, P. and Mäkipää, R., 2007. Models in country scale carbon accounting of forest soils. Silva Fennica, 41(3): 575-602.

- Pourbabaei, H. and Dado, K.H., 2005. Species diversity of woody plants in the district No.1 forests, Kelardasht, Mazandaran province. Iranian Journal of Biology, 4: 307-322 (In Persian).

- Vahedi, A.A., 2017. Monitoring soil carbon pool in the Hyrcanian coastal plain forest of Iran: Artificial neural network application in comparison with developing traditional models. Catena, 152: 182-189.

- Vahedi, A.A. and Bijani-nejad, A., 2015. Variation within soil organic carbon pool in the forest-paddy field edges (Case study: Nour Forest Park). Iranian Journal of Forest and Poplar Research, 1: 104-116 (In Persian).

- Vahedi, A.A., Mataji, A. and Eshaghi Rad, J., 2014. Variation of soil organic carbon pool weight associated with plant biodiversity (Case study: Mixed-beech forests of Glandrood in Nour). Iranian Journal of Applied Ecology, 7: 1-11 (In Persian).

- Varamesh, S., Hosseini, S.M., Abdi, N. and Akbarinia, M., 2010. Increment of soil carbon sequestration due to forestation and its relation with some physical and chemical factors of soil. Iranian Journal of Forest, 1: 25-35 (In Persian).

- Wamelink, G.W.W., van Dobben, H.F., Mol-Dijkstra, J.P., Schouwenberg, E.P.A.G., Kros, J., de Vries, W. and Berendse, F., 2009. Effect of nitrogen deposition reduction on biodiversity and carbon sequestration. Forest Ecology and Management, 258: 1774-1779.

- Xiaonan, D., Xiaoke, W., Lu, F. and Zhiyun, O., 2008.Primary evaluation of carbon sequestration potential of wetlands in China. Acta Ecological Sinica, 28: 463-469.

- Zhu, B., Wang, X., Fang, W., Piao, S., Shen, H., Zhao, S. and Peng, C., 2010. Altitudinal changes in carbon storage of temperate forests on Mt Changbai, Northeast China. Journal of Plant Research, 123: 439-452.