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Paper Information

Journal:   IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH   2005 , Volume 12 , Number 2 (19); Page(s) 167 To 188.
 
Paper: 

THE STUDY OF VEGETATION CHANGES IN ROUDSHUR EXCLOSURE

 
 
Author(s):  AKBARZADEH M.*
 
* RESEARCH INSTITUTE OF FORESTS AND RANGELANDS, TEHRAN, IRAN
 
Abstract: 

Study of vegetation changes of grazed and ungrazed rangelands is most important in range management programs. Vegetation changes were studied for twenty six years (1968-94) inside and outside of the exclosure in Roudshur rangelands. Measurements were made in permanent plots that has been established in study areas since 1968. Results showed that total canopy cover of perennial species increased about 20%, inside of the exclosure, during first six years of the study period. A lot of this increase related to shrubs and forbs but the grasses canopy cover was very low. The increasers (class II)in composition were high, but the decreasers (class I) were seldom. At the end of study period (1994), the cover of perennials increased 2.5 times, compared to initiation of study and a considerable of cover belonged to grasses, especially Stipa hohenackeriana. Shrubs decreasd from 90% to 60% in plant composition The desirable plants such as Astragals chaborasicus and Poa sinaica which were not in the firsrt six years period established and increased considerably. Invaders (class III) were very low. decreasers were not recorded outside in 1994, but were increased inside considerably. The large portion of vegetation composition was made of increasers, but their cover inside of exclosure was higher than outside. Salsola laricina and Stipa hohenackeriana cover was about 25 times more, inside of exclosure. However the Artemisia sieberi cover was lower inside than outside. Invaders were larger in outside than inside of the exclosure.

 
Keyword(s): STEPIC RANGELANDS, CANOPY COVER, PLANT COMPOSITION, EXCLOSURE, ROUDSHOUR
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

AKBARZADEH, M. (2005). THE STUDY OF VEGETATION CHANGES IN ROUDSHUR EXCLOSURE. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, 12(2 (19)), 167-188. https://www.sid.ir/en/journal/ViewPaper.aspx?id=105124



Vancouver: Copy

AKBARZADEH M.. THE STUDY OF VEGETATION CHANGES IN ROUDSHUR EXCLOSURE. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH. 2005 [cited 2021July27];12(2 (19)):167-188. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=105124



IEEE: Copy

AKBARZADEH, M., 2005. THE STUDY OF VEGETATION CHANGES IN ROUDSHUR EXCLOSURE. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, [online] 12(2 (19)), pp.167-188. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=105124.



 
 
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