ANALYSING THE RELATIONSHIP BETWEEN DISTRIBUTION OF PLANT COMMUNITIES AND CLIMATIC AND PHYSIOGRAPHIC FACTORS USING CLASSIFICATION AND ORDINATION METHODS IN RINEH RANGELANDS

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JAFARIAN JELOUDAR Z.; ARZANI HOSSEIN; JAFARI MOHAMMAD; ZAHEDI AMIRI GH.A.D.; AZARNIVAND H.

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Journal: Journal of Rangeland Year:2008 | Volume:2 | Issue:2 Page(s): 125-140

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Title

ANALYSING THE RELATIONSHIP BETWEEN DISTRIBUTION OF PLANT COMMUNITIES AND CLIMATIC AND PHYSIOGRAPHIC FACTORS USING CLASSIFICATION AND ORDINATION METHODS IN RINEH RANGELANDS

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Keywords

RINEH RANGELANDSQ3

ORDINATIONQ2

CLASSIFICATIONQ2

MULTIVARIATE ANALYSISQ2

CLIMATIC FACTORSQ2

PHYSIOGRAPHIC FACTORSQ2

Abstract

This study originally aimed to assess the relationship between vegetation and environmental factors (climatic and physiographic) in order to find the most effective factors separating vegetation types in Rineh Rangeland. Random Equal-stratified sampling procedure was used for vegetation sampling. 10-20 quadrates were randomly sampled in each homogenous unit. Floristic list, density and canopy cover percentage were determined in each quadrate. Elevation, slop and aspect were physiographical factors. Mean minimum temperature, mean maximum temperature, mean daily temperature, mean relative humidity, month and annual precipitation and freezing days were selected for analysis. Any gaps in the data were estimated by correlation and normal ratio methods. In order to find effective analysis, a range of methods were used including both CLASSIFICATION included CA and TWINSPANM CLASSIFICATION and ORDINATION techniques (PCA, DCA, and CCA). The TWINSPAN CLASSIFICATION of the 75 samples sites have resulted in ten groups. Using PCA 99.348 % of variance was accounted using the first three principal components. DCA axis 1 showed significant correlations with CLIMATIC FACTORS and elevation, this suggest that DCA axis 1 represented climatic and elevation factors gradients. CCA analysis explained 16% of the cumulative variances. This result suggest that other factors affect vegetation such as soil and biological factors then should be studied in future researches.

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APA: Copy

JAFARIAN JELOUDAR, Z., ARZANI, HOSSEIN, JAFARI, MOHAMMAD, ZAHEDI AMIRI, GH.A.D., & AZARNIVAND, H.. (2008). ANALYSING THE RELATIONSHIP BETWEEN DISTRIBUTION OF PLANT COMMUNITIES AND CLIMATIC AND PHYSIOGRAPHIC FACTORS USING CLASSIFICATION AND ORDINATION METHODS IN RINEH RANGELANDS. RANGELAND, 2(2), 125-140. SID. https://sid.ir/paper/136454/en

Vancouver: Copy

JAFARIAN JELOUDAR Z., ARZANI HOSSEIN, JAFARI MOHAMMAD, ZAHEDI AMIRI GH.A.D., AZARNIVAND H.. ANALYSING THE RELATIONSHIP BETWEEN DISTRIBUTION OF PLANT COMMUNITIES AND CLIMATIC AND PHYSIOGRAPHIC FACTORS USING CLASSIFICATION AND ORDINATION METHODS IN RINEH RANGELANDS. RANGELAND[Internet]. 2008;2(2):125-140. Available from: https://sid.ir/paper/136454/en

IEEE: Copy

Z. JAFARIAN JELOUDAR, HOSSEIN ARZANI, MOHAMMAD JAFARI, GH.A.D. ZAHEDI AMIRI, and H. AZARNIVAND, “ANALYSING THE RELATIONSHIP BETWEEN DISTRIBUTION OF PLANT COMMUNITIES AND CLIMATIC AND PHYSIOGRAPHIC FACTORS USING CLASSIFICATION AND ORDINATION METHODS IN RINEH RANGELANDS,” RANGELAND, vol. 2, no. 2, pp. 125–140, 2008, [Online]. Available: https://sid.ir/paper/136454/en

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