[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 1, Issue 3 ((Volume 1 - No. 3 - Autumn 2013) - Article Numbers: 7 Article(s) 2013) ::
PEC 2013, 1(3): 105-118 Back to browse issues page
Study of grazing intensities on plant species richness and diversity indices for preserving the ecosystems of Taftan’s rangelands
Masoud Rigi *, Akbar Fakhireh2
Zaboul University , masood.rigi57@yahoo.com
2- Department of Natural Resources, Gonbad Kavous University, Gonbad
Abstract:   (4448 Views)
The comprehensive conservation of rangeland ecosystems depends on their management which is based on protection and maintenance of diversity. This comprehensive management does not take place except by studying and measuring species diversity. Therefore, it is necessory to be aware of the destructive factors in ecosystem, these factors cause shelter and biomass destruction, thus decreasing species diversity. It seems that one of destructive physical pressures on rangeland leading to the decrease of diversity and vegetation elements, is livestock overgrazing. This research was done so as to investigate the effect of various grazing intensities on vegetation diversity in Taftan rangelands. To do this, three sites including heavy grazing, light grazing and 8 years – conserved areas were selected. In each site a number of samples were determined by using statistical method. In addition, 7 transects and 42 plots overall with random – systematic method were established. In the next step, the species names and numbers were recorded. Then Margalef and Menhinick richness index, Shannon-Wiener, hill 1 and hill 2 were calculated and statistical comparison was done in SPSS 19. The results pointed out that there were significant difference in the terms of richness and species diversity at %1 level for various grazing intensities. Moreover, Tukey-test showed that species richness between conservation area and light grazing area between conservation area and heavy grazing area and also between light grazing and heavy grazing areas in 1% level were significant. Shannon-Wiener and Hill 2 indices demonestrated significant difference at 1% level among all grazing intensities. The highest species richness and diversity were in light grazing.
Keywords: Grazing intensity, Species richness, Diversity, Taftan
Full-Text [PDF 430 kb]   (1454 Downloads)    
Type of Study: Research | Subject: Special
Received: 2013/06/18 | Accepted: 2014/01/11 | Published: 2014/07/11
References
1. A plan on management of Forest Resource in West Taftan. 2001. Department of Natural Resources and Watershed Sistan and Baluchestan, 194 p (In Persian).
2. Assadian G., Akbarzadeh, M. Sadeghimanesh, R. 2009. Investing of variations under grazing and conversation,s condition in gain rangelands. Iranian Journal of Range and Desert Research, No. 3, autumn, pp: 343-352 (In Persian).
3. Azarnivand H. Zare Chahuky, M.A. 2008. Improving the Rangelands. Tehran University.
4. Bastin Gn., Ludwig J.A., Eager R.W., Liedloff A.C., Andision R.T., Cobiac M.D.2003. Vegetation changes in a semiarid tropical savanna, northern Australia:1972-2002. The Rangeland Journal, 25(1):3-19.
5. Ejtehadi H., Ghoreyshi alhosseini J., Akkafi H.R. 2002-2003. Comparison of numerical diversity indices in the two differently grazed sites in Torogh Basin,Mashhad, Iran. Iranian Journal of Biology, 13(3-4): 49-58, (In Persian).
6. Ejtehadi H., Sepehri A., Akkafy H.R. 2009. Methods for Measuring of Biodiversity. Ferdowsi University of Mashhad, (In Persian).
7. Gillen R.L., Mc. Collum F.T., Tate K.W., Hodges M.E. 1998. Tall grass prairie response to grazing system and stoking rate. Journal Range Management. 51:139-146.
8. Hendricks H.H., Bond W.J., Midgley J.J., Novellie P.A. 2005. Plant species richness and composition a long livestock grazing intensity gradients in a Namaqualand (South Africa) protected area, Journal of Plant Ecology, 176:19-33.
9. Jahantab A., Sepehri A., Hanafi M., Myrdylmy S.G. 2009. A comparison on diversity of rangelands in two piece: grazing and conserving of mountain ranges in central zagros. Iranian Journal of Range and Desert Research. 2:293-300 (In Persian).
10. Jouri M.H., Temzad B., Shokri M., Banihashemi B. 2009. Comparison of diversity and richness Indices for evaluation of mountain rangeland health (case study: rangelands of Javaherdeh of Ramsar). Journal of Rangeland, 2(4):344-356 (In Persian).
11. Mesdaqi, M. 2000. Investigation of Species richness and vegetative forms of the three levels of pasture utilization in semi steppe grassland Esteban northeast of Iran. Journal of Gorgan University of Agricultural Sciences and Natural Resources, 7:55-62pp (In Persian).
12. Mesdaqi M. 2010. Range Management in Iran. Emam Reza University. Pp.326.
13. Mc Cann K.S. 2000. The diversity-stability debate, Nature, 405:228-233.
14. Mligo C. 2006. Effect of grazing pressure on plant species composition and diversity in the semi-arid rangelands of Mbulu district, Tanzania, Agricultural Journal, 1(4):277-283.
15. Moghaddam M.R. 2000. Pasture and Rangelands, Tehran University.
16. Paryab A., Tavakoi, H., Gholami B. 2004. Trigonella subenervis autecology research in Khorasan. The 94' meeting of the forest and rangeland research institute.
17. Pyke D.A., Herrik J.E., Shanvar P., Pellant M. 2002. Rangeland health attributes and indicators for qualitative assessment. Journal of Range Management. 55:584-597.
18. ange Management Plan of Naroon, 1994. Department of Natural Resources and Watershed Sistan and Baluchestan, 69p.
19. Rigi M. 2005. A planning on Amodenderom sp. orgin in Khash region, the Department of Natural Resources and Watershed Sistan and Baluchestan, 85 p.
20. Rigi M., Pakzad A., Fakhireh A. 2012. Effects of crescent-like micro catchment on vegatation cover indexes. Rain Stvhabgyr Systems Conference. Mashhad.
21. Rigi M., Naruie A. 2007. A plan on desert management in Khash plant area, the Department of Natural Resources and Watershed Sistan and Baluchestan, 104 p.
22. Salami A., Zare H., Amini Eshkevari T., and Jafari B. 2007. Comparison of plant species diversity in the two grazed and ungrazed sites in Kohneh Lashak,Nowshahr, Journal of Pajouhesh & Sazandegi, 75:37-46 (In Persian).
23. Sharifi C., Shahmoradi A. 2009. Study of some ecological characteristics of Ararat grass species in Ardabil province. Journal of Pajouhesh & Sazandegi. (2):1-10(In Persian).
24. Smit D.A., Schmutz, E.M. 1975. Vegetative changes on protected versus grazed desert grassland ranges in Arizona. Journal of Range Management. 28(6):453-458.
25. Stodart L.A., Smith A.D. Box T.W. 1975. Range Management. 3rd Edition. New York: McGraw Hill. 532 p.
26. Tahmasebi C., Maqsudi M., Ebrahimi, M.A., Shahroki, A., Faal, M. 2011. Winter effect of grazing on the composition and diversity of the steppe regions Borujen Jvamgyahy. Journal of Range, Number IV, Pages 410-419 (In Persian).
27. Virginie B., Tessier M., Digaire F., Valery J.P., Gloaguen J.C., Lefure J.C. 2003.Sheep grazing as management tool in Western European saltmarshes. J.C.R.Boil., 1:148-157.
28. West N.E. 1993. Biodiversity of rangelands. Journal of Range Managment.46:2-13
29. Zamora J., Verdu J.R., Galant E. 2007. Species richness in Mediterranean,Biological Conservation. 134: 113-121.
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Rigi M, Fakhireh A. Study of grazing intensities on plant species richness and diversity indices for preserving the ecosystems of Taftan’s rangelands . PEC. 2013; 1 (3) :105-118
URL: http://pec.gonbad.ac.ir/article-1-73-en.html


Volume 1, Issue 3 ((Volume 1 - No. 3 - Autumn 2013) - Article Numbers: 7 Article(s) 2013) Back to browse issues page
مجله حفاظت زیست بوم گیاهان Journal of Plant Ecosystem Conservation
Persian site map - English site map - Created in 0.05 seconds with 32 queries by YEKTAWEB 4056