Survey of floristic, life form, chorology, and distribution of plants in Shah Moalem

Our knowledge about ecosystem has increased dramatically in recent decades, but our ability to control it has not been consistent with the pace of change. The general objectives of this scientific research, Grassland evaluation, and identification of variations in vegetation and the factors affecting them for planning and implementing the proper management of exploitation as well as documenting and describing the vegetation units of the mountainous region of Shah-Moalem in Gilan province. Mountain Shah Moalem is located in the mountain range of western Alborz and is one of the highest peaks of Guilan province whereas that is a hotspot of high biodiversity region in Alborz with a lot of endemic element. Studies like this make the importance of protecting natural habitats, biodiversity, and water and soil for these vulnerable areas more considerable. The Shah Moalem Mountain region is located in the geographical range from 37˚ 11 north and 48˚ 54 minutes east. The study was conducted during several transects in order to determine the floristic, biological and chorological features of Alpine and Semi-Alpine regions. Based on this, at first, using different available resources, different areas of Shah Moalem area were determined and then, in the selected areas, a field experiment was conducted during three elevation transects. During the growing season from 1396 to 1397, plant species were collected in the region and identified by sources, plant species list of the region was conducted. After analyzing the results of this study, the total number of plant specimens was determined about 178 species of vascular plants belonging to 47 families. During the investigation the largest families are Poaceae and Asteraceae and also the largest genera are Astragalus and Poa which constitute the dominant vegetation. Life form of the species was determined according to Rankier classification. Hemicryptophytes with 47% was the most dominant form and chameophytes and geophytes with 21% and 19% were considered the most important life forms of this region, respectively. The chorology of the region was determined that most of the elements belong to the Irano- Turanian zone with 47%. The comparison of the floristic features and the appearance of the vegetation in the mentioned area with the other regions provides an opportunity to elaborate and monitor the patterns, mechanisms and generalizations of the distinction between the intrinsic regional features.

کلیدواژه ها:

Shah-Moalem ، Floristic ، Vegetation ، Chorology ، Life form