Investigation of Plants Biological form and flora watershed ivar

Subject Areas :

حمید علی پور ¹ , آرش ملکیان ² , میرمسعود خیرخواه زرکش ³ , سعید قره چلو ⁴

1 - دانشگاه سمنان
2 - دانشکده منابع طبیعی دانشگاه تهران
3 - پژوهشکده حفاظت خاک و آبخیزداری تهران
4 - عضو هیئت علمی دانشگاه سمنان

Received: 2013-11-10 Accepted : 2015-01-26 Published : 2013-08-23

Keywords: Geographical distribution, life form, watershed ivar, Flora,

Abstract :

Floristic composition of the vegetation in the study of management and conservation of biodiversity is of particular importance. Maintenance, management, protection and rational utilization of rangeland ecosystems requires an understanding of all aspects of them. Also use of native plant species and the amount of people asking Khvshkhvarky animal species found in this region. Results indicate the general area was identified 109 plant species belonging to 24 plant dark. The largest plant families in terms of number of species, including 21 species Astracea, Poaceae with 15 species, Lamiaceae with 10 species, Caryophyllaceae and Brassicaceae, 6 species are. erms of Account Value Account Value forage species in the region, 23 are devoted to the most users. Based on the stability or longevity of 33 species of annual, biennial and 4 of 72 perennial species were identified in the region. 71 species form herbaceous broadleaf maximum vegetative growth form field into account. Rangeland class III palatability Terms of 95 species and 14 species with low values of the Range Class II values were averaged. The last point is that the results were due to high pressure on non-palatable pasture species in the region have therefore, management efforts should be made to prevent this process from being exposed to a variety of plant.