mohammad javad ahmadi; Younes Asri; Tahereh Eftekhari
Volume 27, Issue 4 , December 2020, , Pages 702-711
Abstract
Diaphanoptera khorasanica is Iran's endemic species and vulnerable threat class. In this research, some of the vegetative and environmental characteristics of this species were studied in the Chalpo-e-Ataeiyeh habitat of Razavi khorassan and Hoindeh and Kajdarreh Sarigoul National Park in North Khorasan, ...
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Diaphanoptera khorasanica is Iran's endemic species and vulnerable threat class. In this research, some of the vegetative and environmental characteristics of this species were studied in the Chalpo-e-Ataeiyeh habitat of Razavi khorassan and Hoindeh and Kajdarreh Sarigoul National Park in North Khorasan, Iran. For sampling of D. khorasanica, 45 plots were arranged in a systematic - random method along 9 transects of 100 m for all three habitats. In each plot, the vegetative properties of this species were measured. In each habitat, three soil samples were randomly taken from the depth of 0-20 cm at the under of the plants, and some of their physical and chemical characteristics were measured. Climatic data of 10 years was extracted from synoptic stations of Kashmar and Esfarayn. After data collection, one way ANOVA was used to analyze vegetative and soil characteristics and Duncan's test was used to compare the means. The results showed that there was a significant difference between the three habitats in terms of crown cover and diameter of the thickest stem at 5% level, plant height and leaf length , density and length of the longest stem at 1% level, but the number of seedling and leaf width were not significantly different. Also, there was a significant difference between the habitats for all of soil characteristics (p < 0.01). The most important environmental factors affecting vegetative characteristics were determined using principal components analysis (PCA). The results showed that minimum absolute temperature, average minimum temperature of coldest month, annual rainfall, electrical conductivity, clay and direction of slope had the most effect on these characteristics, respectively. Also among the vegetative characteristics, length of the longest stem, plant height, crown cover, number of plants and diameter of the thickest stem had the most effect on environmental characteristics.
Nabi Ahsani; Jafar Oladi; Farhang Ghasriani; Mohammad Darvish
Volume 14, Issue 4 , February 2008, , Pages 539-558
Abstract
Kusalan range is a northwest-southeast mountain near Sarvabad, west of Kurdistan. The habitat includes a complex set of ecological functions and unique mountainous values such as Quercus forests, dense ranges, as well as various springs inside and around the region. So far, there was no study on the ...
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Kusalan range is a northwest-southeast mountain near Sarvabad, west of Kurdistan. The habitat includes a complex set of ecological functions and unique mountainous values such as Quercus forests, dense ranges, as well as various springs inside and around the region. So far, there was no study on the bioenvironmental habitat potential. This persuaded us to conduct a research on the habitat and ecosocial potentials according to IUCN categories using data bases like other literatures, 10 m2 panchromatic SPOT5 2005 data , expert opinions and field studies. Analysis of ecosocial and ecological bioenvironmental sources was implemented through a geographic information system (R2V, Arc/Info, Idrisi and Arc View). After qualitative and quantitative evaluation of various sources, land units were observed from overlaying maps of land form, soil categories, vegetation type, wildlife habitats, land use and conventional territory. Illustrated map show that about 70 percent of the area has a great conservational potential thus, the zonation process on the basis of IUCN definitions executed. The studied area was a habitat for 224 species of flora and 195 species of fauna classified as 5 categories: 29% core zone, 41% buffer zone, 14%expanded recreation zone, 3% intensive recreation zone and 14% cultural historical zone of Hawraman city and Pir-Shaliar annual ceremony and 13.2% reclamation zone including scientific, training values, virgin features and unique landscapes. Thus, Kusalan habitat worth to be introduced a national park (II) as a member of quadruplet national protected area in Iran. According to the results, GIS and RS approaches (hybrid interpretation of high resolution SPOT5 images) certainly can support determining and preparing bioenvironmental map sources in impracticable areas for conservational studies on IUCN criteria basis.