Effect of species frequency in identification of ecological patterns in Jamand district, Nowshahr

Document Type : Scientific article

Authors

1 Ph.D. Student of Forestry, Faculty of Natural Resources, Urmia University, Urmia, I.R. Iran.

2 Associate professor, Forestry department, Faculty of Natural Resources, Urmia University, Urmia

3 Associated Professor, Department of Forestry, Urmia University, Urmia, I.R. Iran.

4 Assistant Professor, Forestry department, Faculty of Natural Resources, University of Tarbiat Modarres, Nour, I.R. Iran

Abstract

This study was performed in order to investigate the effect of deleting rare species and common species in compartment No.317 (managed forest) and No.318 (control forest) of Jamand district of Golband forest in Mazandaran (Noshahr). For this purpose, random-systematic sampling method with regular grid of 100×200 m was used to locate samples. The plot size was 400 m2 considering to tree and shrub species and in the center of each main plot, one 100 m2 subplot was set up for herb species. Estimate of percent cover of each plant species recorded using of Braun-Blanquet scale. DCA and NMDS ordination used and the results were compared by Procrust analysis.The results illustrated that deleting  the rare species data had a little effect on output of ordination, although excluding of common species can change significantly output of ordination, and correlation between the raw data and removed common species is low. Generally, it can be concluded that the removal of rare species without losing too much information is a way to prevent probable errors but common species which have so much information should be retained.

Keywords

Forest Research and Development
Volume 3, Issue 4
March 2018
Pages 317-328

Files

Share

How to cite

Statistics