نتایج جستجو برای: flora of iran
تعداد نتایج: 21176042 فیلتر نتایج به سال:
In this research, the study of "Flora Seyfe Lake (Kırşehir) Nature Protection Area", which is doctoral thesis author, was used. one important wetlands due to ecosystem characteristics it carries.By evaluating 874 plant samples collected in research area, 65 families, 237 genera, 383 species, 3 subspecies and 2 varieties were determined. The total number taxa 388. 52 species are endemic Turkey. ...
In the framework of floristic and vegetation studies of different parts of the Hyrcanian region of northern Iran, Lepidium virginicum L. (Brassicaceae) is reported here for the first time for the flora of Iran. Along with a distribution map for the species, an identification key is provided for the nine annual or biennial species of Lepidium, already reported from Iran.
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
it is not possible to understand developments of a country’s culture and civilization without knowing his believes and myths. whether it is north or south, east or west, planes or mountains, sahara or deserts, here in iran every corner includes valuable and precious treasures which are known all over the world, and cultural – historical objects which are found here adorn all well known museums...
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
forest reserves are one of the most important approaches in ecosystem management in iran. in order to determine the effects of reserve management on plants diversity (woody plants and ground flora) in three zones (core zone, buffer zone, and transmission zone of chamhesar pear forest reserve), we mapped land form units. then 18 main sampling units (20×50=1000 m2) distributed randomly were chose...
Cotoneaster Medik. is an important and taxonomically complex group due to numerous variable forms. Therefore, it interesting object for taxonomical studies. Five new records, including transcaucasicus Pojark., C. minutus G. Klotz, afghanicus aitchisonii K. Schneid., ellipticus Hort ex Loudon are identified the first time from Iran. Moreover, meyeri Pojark. insignis reported second Flora of Iran...
the purpose of the research is to examine if integrating cooperative learning into vocabulary learning helps to increase word recognition of students in an elementary school in iran. it tries to investigate whether cooperative learning approach enables students to improve their language learning. this research used stad (students team achievement division) as a cooperative model in this study. ...
سیانوباکتری های تولیدکننده هتروسیت گروه ویژه ای از پروکاریوت های فتوسنتزکننده هستند که قادرند نیتروژن اتمسفری را تثبیت کنند و در مزارع برنج به فراوانی یافت می شوند. هدف از این مطالعه خالص سازی و شناسایی سیانوباکتری های مزارع برنج ناحیه کلات نادری از استان خراسان رضوی است. در راستای نیل به این هدف، فلور جلبکی 4 ایستگاه واقع در این ناحیه مورد بررسی قرار گرفت و در مجموع 30 تاکسون شناسایی شد. گونه ...
گونه artemisia sieberi besser در مناطق وسیعی از استپهای ایران گسترش دارد. تاکنون نظریات مختلفی در مورد نام artemisia استپهای ایران بیان شده است. برخی از محققین عقیده دارند که نمونه های موجود در ایرانa. sieberi می باشند و برخی نیز بر این باورند که این نمونه ها a. herba-alba هستند. مطالعات فیتوشیمیایی 34 جمعیت این گونه از ایران و نمونه های artemisia herba-alba از اسپانیا و a. sieberi از فلسطین ت...
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