Bahmanyar, Muhammad Ali

Jalilvand, Hamid

Tamartash, Reza

Tatian, Mohammadreza

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Investigation of Affecting Some Climatic Factors on Distribution of Plant Societies in Eastern Alborz (IR‐Iran) Mohammadreza Tatian Azad University, Iran Muhammad Ali Bahmanyar Sari Agricultural Sciences and Natural Resources University, Iran Reza Tamartash Sari Agricultural Sciences and Natural Resources University, Iran Hamid Jalilvand Sari Agricultural Sciences and Natural Resources University, Iran Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/8-1/37 The 21st International Grassland Congress / 8th International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅰ 　 瞯 ]905　 瞯Grasslands/Rangelands Resources and Ecology ——— Climate Change and Impact on Grasslands/RangelandsInvestigation of affecting some climatic factors on distribution of plant societies in EasternAlborz ( IR‐Iran)Mohammadrez a Tatian 倡 1 , Muhammad A li Bahmanyar2 , Rez a Tamartash2 , H amid Jalilv and21 Post G raduate S tudent o f Range Management ( Ph .D .) , Science and Research Unit o f Tehran ( A z ad University ) ,2 Faculty Members o f A griculture and Natural Resources o f Sari University倡 E‐mail : mr ＿ t979＠ yahoo .com , Sari , Maz andaran Prov ince , P .O . Box : ＃ 737 , IR‐I ranKey words : Temperature , precipitation , plant societies , Alborz MountainIntroduction Climatic elements determine plant communities in each area , wherever important plant characteristics such asdistribution , diversity and density are affected by climatic factors and different ecosystems are formed by these parameters . Infact , condition of vegetation in nature is affected from climatic factors and understanding of relationship between plant andclimatic factors is important step in ecological management of rangeland ecosystems especially diverse mountain rangelands .Height effect moisture and temperature change which are the most important factors of distribution of plant associations ( Songet al . , ２００６) . The climatic factors with affection on soil moisture control changes of plant communities ( Knapp et al . , ２００２) .Plant communities due to affectability of climatic variations such as temperature and precipitation are created ecological plantgroups of trees , bushy trees , shrubs and grasses ( Taghipour , ２００５ ) . This research was done in order to recognizing andunderstanding of natural models between climatic factors and vegetation to determine ecological plant groups in mountainrangelands of eastern Alborz .Materials and methods Mountain rangelands of eastern Alborz are located in Mazandaran Province in north of IR‐Iran . Plantcommunities were identified by floristic‐physiognomic method and were named based on dominant species . Sampling was doneby randomized method . Data analysis was done with SAS statistical program and analysis of variance was done in completelyrandomized design with important degree factor of dominant species of plant communities .Results and discussion The results of vegetation study showed five plant communities as follows : １ . Festucaov ina‐Stip a barbatawith associate species such as : Brumes tomentellus , B . tectorum , A gropy ron elongatum , Melica persic ; ２ . Stipa barbata‐Festuca ov ina with associate species such as : B . tomentellus , A . elengatum . A . cristatum , Hordeum glaucum ; ３ .A cantholimon p terostegium‐ A stragalus gossy p inus , w ith associate species such as : A stragalus brachystachys , Verbascumthapsus , Thymus caucasicus , A canthophy lum p terostegium , ４ . Onobrychis cornuta‐A canthophy llum p terostegium withassociate species such as : Teucrium polium , Phlomis herba‐venti , A stragalus aureus , and ５ . Rosa iberica‐Loniceraf loribunda with associate species such as : Juniperus communis , 　 Berberis integerrima , Cerasus pseudop rostrata , J . sabina .Some study showed that distribution of grasses and shrubs is related to their humid needs in rangeland ecosystems ( Jafari etal . , ２００１ ; Song et al . , ２００６) . Also , the study of Walker et al (２００５ ) showed that with increased of temperature , vegetationcover percentage and height of grass and shrub forms have .ReferencesJafari , M . , Bagheri , M .H . , Ghanadha , M .R . , Arzani , H . , ２００１ . Investigation of interactions of soil physicochemicalproperties and dominant plants in location of Qom . I ranian Journal o f Natural Resources ５５(１ ) : ９５‐１０５ ( In persian) .Knapp , A .k . , Fay , P .A . , Blair , J .M . , Collins , S .L . , Smith , M .D . , Carlisle , J .D . , Harper , C .W . , Danner , B .T . ,Lett , M .S . , McCarron , J .K . , ２００２ . Rainfall variability , carbon cycling , and plant species diversity in a mesic Grassland .Science ２９８ , ２２０２‐ ２２０５ .Song , A . , Liu , S . , Shi , Z . , Dong , L . , ２００６ . Quantitative classification and ordination of sub alpine meadow in WolongNature Reserve . Applied Ecology ７ (７) : １１７４‐ １１７８ .Taghipur , A . , ２００５ . Effect of environmental factors on distribution of range plants in Hezargarib region of Behshahr . MScThesis , University o f A gricultural Sciences and Natural Resources o f Gorgan , １１７pp ( In Persian) .Walker , M .D . , ２００５ . Plant community responses to experimental warming across the tundra biome . PNA S , １０３ (５) : １９４２‐１９４６ .

Investigation of Affecting Some Climatic Factors on Distribution of Plant Societies in Eastern Alborz (IR‐Iran)

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Investigation of Affecting Some Climatic Factors on Distribution of Plant Societies in Eastern Alborz (IR‐Iran)

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