FLORISTIC COMPOSITION AND PLANT DIVERSITY UNDER DIFFERENT GRAZING INTENSITIES: CASE STUDY SEMI STEPPE RANGELAND, BAHARKISH, QUCHAN

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NIKAN M.; EJTEHADI H.; JANKJU M.; MEMARIANI F.; HASANPOUR H.; NOADOOST F.

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Journal: IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH Year:2012 | Volume:19 | Issue:2 (47) Page(s): 306-320

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Title

FLORISTIC COMPOSITION AND PLANT DIVERSITY UNDER DIFFERENT GRAZING INTENSITIES: CASE STUDY SEMI STEPPE RANGELAND, BAHARKISH, QUCHAN

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Keywords

FLORISTIC COMPOSITIONQ2

CHOROLOGYQ2

GRAZINGQ2

BIODIVERSITYQ2

QUCHAN AND IRANQ2

Abstract

Livestock GRAZING is one of the most influencing factors on the rangeland community structure and composition, which can also change the vegetation diversity. The main aim of this research was to survey the flora and plant BIODIVERSITY at three rangeland sites, being used under different GRAZING intensities, Baharkish, Quchan, Iran. Three sites were systematically selected along a spatial gradient of low, moderate and high GRAZING intensity, and 20 quadrates were randomly established within each site. Species composition, abundance and canopy cover were recorded within the quadrates. Simpson and Shannon diversity and Carmago and Smith & Wilson evenness indices were measured for each site. Floristic studies led to the identification of 156 plant species belonging to 34 families. The FLORISTIC COMPOSITION of the area was strongly dominated by the Irano-Touranian elements. Shannon and Simpson diversity indices were significantly higher under the moderate than the low and heavy GRAZING intensity sites and the lowest diversity was significantly recorded for the heavy GRAZING site. Evenness indices did not significantly differ between the low and moderate GRAZING sites, but it was significantly lower under the high GRAZING site. In conclusion, proper livestock GRAZING is necessary for preservation of species diversity in the semiarid rangelands, Moderate GRAZING maintained the species diversity while light and sever GRAZING reduced or even eliminated some sensitive plant species.

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APA: Copy

NIKAN, M., EJTEHADI, H., JANKJU, M., MEMARIANI, F., HASANPOUR, H., & NOADOOST, F.. (2012). FLORISTIC COMPOSITION AND PLANT DIVERSITY UNDER DIFFERENT GRAZING INTENSITIES: CASE STUDY SEMI STEPPE RANGELAND, BAHARKISH, QUCHAN. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, 19(2 (47)), 306-320. SID. https://sid.ir/paper/107283/en

Vancouver: Copy

NIKAN M., EJTEHADI H., JANKJU M., MEMARIANI F., HASANPOUR H., NOADOOST F.. FLORISTIC COMPOSITION AND PLANT DIVERSITY UNDER DIFFERENT GRAZING INTENSITIES: CASE STUDY SEMI STEPPE RANGELAND, BAHARKISH, QUCHAN. IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH[Internet]. 2012;19(2 (47)):306-320. Available from: https://sid.ir/paper/107283/en

IEEE: Copy

M. NIKAN, H. EJTEHADI, M. JANKJU, F. MEMARIANI, H. HASANPOUR, and F. NOADOOST, “FLORISTIC COMPOSITION AND PLANT DIVERSITY UNDER DIFFERENT GRAZING INTENSITIES: CASE STUDY SEMI STEPPE RANGELAND, BAHARKISH, QUCHAN,” IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH, vol. 19, no. 2 (47), pp. 306–320, 2012, [Online]. Available: https://sid.ir/paper/107283/en

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