Volume 10, Issue 20 (11-2022)
Ecol Iran For 2022, 10(20): 88-98 |
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Hesami R, Shabanian N, amohammadi samani K. (2022). Species and Functional Diversity of Pollarded (Galajar) and Less Disturbed Area in the Northern Zagros Forests. Ecol Iran For. 10(20), 88-98. doi:10.52547/ifej.10.20.88
URL: http://ifej.sanru.ac.ir/article-1-462-en.html
URL: http://ifej.sanru.ac.ir/article-1-462-en.html
1- In Master Forestry science and engineering, Department of Forestry, Faculty of Natural Resources, University of Kurdistan, Sanandaj, I.R. Iran
2- Department of Forestry, Faculty of Natural Resources, University of Kurdistan, The Center for Research and Development of Northern Zagros Forestry, Sanandaj, I.R. Iran
2- Department of Forestry, Faculty of Natural Resources, University of Kurdistan, The Center for Research and Development of Northern Zagros Forestry, Sanandaj, I.R. Iran
Abstract: (2435 Views)
Extended Abstract
Introduction and Objective: Biodiversity is considered as an important indicator in the study of health and sustainability of natural ecosystems. This investigation was aimed to study of species and functional diversity of grass cover in the north Zagross forests.
Materials and Methods: 32 sample plots with an area of 300 square meters were taken from less disturbed areas and as well as 30 sample plots in the pollarded (Galajar) areas using the minimal area. Some functional characteristics of plants including leaf dry weight, specific leaf area, plant life form, chorology, total plant height and root system were studied. In order to study of chemical and physical properties of soil the soil samples were taken at a depth of 0-10 cm from the center and four corners of the plots as well as. Four environmental variables including potassium content, sand percentage, rock protrusion percentage and geographical direction were selected by forward selection analysis
Results: The results showed that the two groups of Cemetery and Galajar area are well distinguished from each other based on species composition. Evaluation of the effect of environmental and soil variables on the species and functional diversity based on Redundancy analysis (RDA), showed that functional homogeneity is significantly different from the homogeneity estimation index. The classification results showed the distinctiveness of Galajar and less disturbed areas as two separate groups. Soil potassium content and sand percentage were lower in Galajar while bedrock protrusion was higher.
Conclusion: In General, it can be said that the density, species and functional diversity of vegetation in Galajar were lower than less disturbed areas. According to the fact that species diversity is less in the Pollarded area(Galajar) than less disturbed areas, it is suggested that less disturbed forests be considered as a management model.
Introduction and Objective: Biodiversity is considered as an important indicator in the study of health and sustainability of natural ecosystems. This investigation was aimed to study of species and functional diversity of grass cover in the north Zagross forests.
Materials and Methods: 32 sample plots with an area of 300 square meters were taken from less disturbed areas and as well as 30 sample plots in the pollarded (Galajar) areas using the minimal area. Some functional characteristics of plants including leaf dry weight, specific leaf area, plant life form, chorology, total plant height and root system were studied. In order to study of chemical and physical properties of soil the soil samples were taken at a depth of 0-10 cm from the center and four corners of the plots as well as. Four environmental variables including potassium content, sand percentage, rock protrusion percentage and geographical direction were selected by forward selection analysis
Results: The results showed that the two groups of Cemetery and Galajar area are well distinguished from each other based on species composition. Evaluation of the effect of environmental and soil variables on the species and functional diversity based on Redundancy analysis (RDA), showed that functional homogeneity is significantly different from the homogeneity estimation index. The classification results showed the distinctiveness of Galajar and less disturbed areas as two separate groups. Soil potassium content and sand percentage were lower in Galajar while bedrock protrusion was higher.
Conclusion: In General, it can be said that the density, species and functional diversity of vegetation in Galajar were lower than less disturbed areas. According to the fact that species diversity is less in the Pollarded area(Galajar) than less disturbed areas, it is suggested that less disturbed forests be considered as a management model.
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