Maryam NAEIMI; Parvane Ashouri; Farhad Khaksarian; Samira Zandifar; Masoud Mohammad aliha
Abstract
Degradation of the Earth's biodiversity has resulted in damage that in many cases is irreparable to humans. The purpose of the present study is to determine the boundaries and environment of the proprietary and medicinal species of Kozal Damavandi (Diplotaenia damavandica Mozaffarian, Hedge & Lamond). ...
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Degradation of the Earth's biodiversity has resulted in damage that in many cases is irreparable to humans. The purpose of the present study is to determine the boundaries and environment of the proprietary and medicinal species of Kozal Damavandi (Diplotaenia damavandica Mozaffarian, Hedge & Lamond). This plant has received a lot of attention due to the presence of special effective compounds that have therapeutic effects on most skin complications. For this purpose, a habitat map was first prepared with local visits and previous reports. Then, its environment including physiography, accompanying species, lithology, soil and water resources characteristics were studied. The results showed that this plant species grows at the altitude of 2400 to 3600 meters above sea level, with a slope of above 60% and an altitude of above 35ᵒ 40’. Lithological study of the habitat area in dense areas shows the thick green tuffs, Jeirood foundation, shale, and dark sandstone. Also, in terms of soil science, there were significant differences between the examined parameters of K, P, and SO4, while regarding the water resources the significant parameters are Cl and NO3. Investigating the deterioration of vegetation also showed that the highest coverage density in the region was in 2014. The results of the present study will be used to determine the limiting factors of the habitat and to investigate the possibility of the growth of this exclusive species.
Massoud Borhani; rahele sadeghzade
Abstract
. This bulb root plant has essential oil with medicinal property. The great need for this product has led to a large harvest of its bulbs from the rangelands, which has significantly reduced its stands in recent years. The aim of this research is to determine the vegetative characteristics of Allium ...
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. This bulb root plant has essential oil with medicinal property. The great need for this product has led to a large harvest of its bulbs from the rangelands, which has significantly reduced its stands in recent years. The aim of this research is to determine the vegetative characteristics of Allium hirtifolium in Isfahan province. For this purpose, The presence of the plant was determined using field studies of 1395, and the ecological characteristics including topographic(elevation and slope), meteorology (rainfall, temperature, and climatic classes) and soil (Texture, salinity and acidity) were determined. Also using logistic regression model, the main factors influencing the presence of the species were identified. This species occur mainly in Astragalus community. The results showed that the highest presence of the species is in cold semi-arid climate with an average annual rainfall of 300 to 500 mm and an average annual temperature of 11 to 14 ° C. In terms of topographic factors, the species presence is mostly at altitudes between 2400 and 3000 meters above sea level and slopes of more than 20 percent. In terms of soil parameters, this plant is mainly in medium soil texture with a pH of 7 to 8 and an electrical conductivity of zero to 4 dsi Siemens / m. The logistic regression model showed that the two factors of elevation and precipitation had the most effect on presence of species.on species presence showed that topographic and rainfall factors had the most effect on species presence.
