Salarian, F., Ghorbani, J., Safaeian, N. (2013). Vegetation changes under exclosure and livestock grazing in Chahar Bagh rangelands in Golestan province. , 20(1), 115-129. doi: 10.22092/ijrdr.2013.2987
Fatemeh Salarian; Jamshid Ghorbani; Nosrat Allah Safaeian. "Vegetation changes under exclosure and livestock grazing in Chahar Bagh rangelands in Golestan province". , 20, 1, 2013, 115-129. doi: 10.22092/ijrdr.2013.2987
Salarian, F., Ghorbani, J., Safaeian, N. (2013). 'Vegetation changes under exclosure and livestock grazing in Chahar Bagh rangelands in Golestan province', , 20(1), pp. 115-129. doi: 10.22092/ijrdr.2013.2987
Salarian, F., Ghorbani, J., Safaeian, N. Vegetation changes under exclosure and livestock grazing in Chahar Bagh rangelands in Golestan province. , 2013; 20(1): 115-129. doi: 10.22092/ijrdr.2013.2987

Vegetation changes under exclosure and livestock grazing in Chahar Bagh rangelands in Golestan province

تحقیقات مرتع و بیابان ایران
Article 9, Volume 20, Issue 1, June 2013, Pages 115-129    PDF (231.96 K)
Document Type: Research Paper
DOI: 10.22092/ijrdr.2013.2987
Authors
Fatemeh Salarian1; Jamshid Ghorbani* 2; Nosrat Allah Safaeian3
1M.Sc. in Range Management, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
2Assistant Professor, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
3Professor, Faculty of Natural Resources, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran
Abstract
Grazing animals affect rangeland vegetation structure and function directly and indirectly. These effects can be assessed in exclosures. In this study, the vegetation composition and some vegetation indices (functional groups, biomass, species diversity and richness) were compared in an exclosure (livestock excluded for about 10 years) and grazed areas in Chahar Bagh rangeland in Golestan province. The percentage of canopy cover, stone and gravel, bare ground, litter and the biomass were estimated in quadrates of 1 m2. Results showed that there were 34 species common in both areas while 7 and 11 species were restricted to exclosure and grazed areas, respectively. Results of t-test showed that exclosure significantly increased the percentage of canopy cover of some desirable species such as Agropyron intermedium, A. trichophorum, Festuca ovina. Also, the percentage of canopy cover of hemicryptophyte, grasses, forbs, and perennials significantly increased in exclosure area. Moreover, Simpson diversity index and species number significantly increased in exclosure. The biomass of grasses and total biomass also significantly increased from grazed area to exclosure. According to the results, exclosure for less than ten years could cause some changes in vegetation of this rangeland.
Keywords
Grazing; richness and diversity; biomass; Functional Groups
Statistics
Article View: 5,205
PDF Download: 5,018


counter
Journal management system. designed by sinaweb