Investigation of the physiognomic and ecological characteristics of the main vegetation in the mountainous grassland in western Gilan

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 284

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شناسه ملی سند علمی:

BIOCONF20_780

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

In Iran, less considered to environmental protection as a valuable natural source in the country due to the lack of comprehensive information on the present plant vegetation, especially mountain grassland, which have a high percentage of biodiversity. The existence of exclusive plant species and vegetation is a driving force for increasing the survival of the environment and living organisms, especially; the human. The present study was carried out to identify and investigate the physiognomic and ecologicalsimilarities between plant communities in the Masooleh rangeland and the identification of vegetation strips in the middle and the Alpine belt of this region. The present study was carried out to identify and investigate the physiognomic and ecological similarities between plant communities and identification of vegetation strips in the middle and the Alpine belt of the grasslands of Shah-Moalem mountain from Masooleh in Gilan province. Shah-Moalem mountainous area is located southwest of Masouleh city in Gilan province and is one of the highest peaks of the province (3058 meters above sea level), located on the common border between the three provinces of Gilan, Zanjan, and Ardebil. Data collection accomplished during 1396 and 1397. To better interpret and understand the distribution pattern of plants, the study of dominant vegetation coverages in the region by Scrolling in the field the analysis of the data extracted from the vegetation communities of the region caused the segregation of the mentioned communities Vegetation strips of the region were distinguished among communities based on physiognomic and ecological standard. Analysis of the effects of ecological factors in the environmental study showed that with increasing altitude, shrubs were converted into annual and perennial grasses. In this study, vegetation was divided into three belts. The first belt with ecotonic state and dominance of shrub species and high grass, the second belt and thorny cushion species and third belt that includes alpine plants and subalpine Which in terms of dominant species, has a completely different combination. Diagnostic species of this large group consists of several Persian Turanian elements, with a large distribution in the Alpine section and the mountain range. The most important feature of this region formation, the presence of Poaceae and tall plants with species of umbelliferous that growth with thorny cushion. Species such as koeleria cristata, Prangos uloptera, Bromus tomentellous and Melica persica play an important role in the physiognomy of this region. Long-term grazing can be the main causes for the dominance of thorny cushion species such as Astragalus, Acantholimon, Cousinia, Onobrychis cornuta.

نویسندگان

Sharyan Ghasemi Asli

Department Biology, Faculty of Science, University of Mazandaran,Iran

Ali Reza Naghnezhad

Department Biology, Faculty of Science, University of Mazandaran,Iran

Tahereh Sadat Aghajanzadeh

Department Biology, Faculty of Science, University of Mazandaran,Iran

Jürgen Dengler

Department of Biology, Zurich University of Applied Sciences,Switzerland