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:: Volume 6, Issue 12 (12-2018) ::
PEC 2018, 6(12): 59-76 Back to browse issues page
Investigation of the effects of roads on the Persian oak forest ecosystems from the point view of the understory plant communities diversity and physico - chemical properties of soil
Farhad Ghasemi Aghbash * , Aziz ali Abdi2 , Mehdi Heidari3
Malayer University, Malayer University , ghasemifarhad@yahoo.com
2- Malayer University
3- Ilam university
Abstract:   (4202 Views)

Road construction in forest ecosystem makes changes in vegetation composition, biodiversity and soil characteristics. To investigate changes in plant communities due to road construction in Zagros forest ecosystem, two-kilometer of roads located in coppice with standard stand (in Bakool region, Lorestan province) was selected. Twelve transects were selected with different intervals of the road axis. To collect plant and soil samles, with intervals of 20, 50, and 100 meters from the road edge 72 plot 20×20 meter  were selected on each transects. Relationship of vegetation and soil properties investigated by using the canonical-correlation analysis (CCA). Furthermore, in order to group plant species two- way indicator species (TWINSPAN) analysis was used. Biodiversity was estimated by using the Simpson and Shannon – wiener diversity indices, Margalef and Menhinic indices and the Pilo index. Results showed that the species composition of sections close to the road was significantly different from the sections inside the forest and they were classified in two separate groups. Also, the results showed that the greatest amount of organic carbon, lime, saturation, potassium were seen at distance of 100 m in coppice and seed stand and also the greatest amount of absorbable phosphorous was seen at distance of 50 and 100 m in this stand. Likewise, the greatest amount of salinity, total nitrogen and bulk density were seen at distance of 20 and 50 m in coppice seed stand as well. Acording to the results, biodiversity indices showed that the greatest amount at distance of 100 m in both stands. The results of this study showed the negative impacts of road construction on the vegetation composition and physic-chemical properties of soil in this forest.

Keywords: : Species diversity, Forest roads, soil, Coppice stand, Zagros
Full-Text [PDF 263 kb]   (767 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/06/24 | Accepted: 2017/12/30 | Published: 2018/11/24
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Ghasemi Aghbash F, Abdi A A, Heidari M. Investigation of the effects of roads on the Persian oak forest ecosystems from the point view of the understory plant communities diversity and physico - chemical properties of soil. PEC 2018; 6 (12) :59-76
URL: http://pec.gonbad.ac.ir/article-1-348-en.html


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Volume 6, Issue 12 (12-2018) Back to browse issues page
مجله حفاظت زیست بوم گیاهان Journal of Plant Ecosystem Conservation
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