Farhad Veysei; Davod Akhzari
Volume 28, Issue 3 , October 2021, , Pages 424-434
Abstract
The aim of this study was to investigate the effect of Sufivand-manganese mine (located in Harsin city of Kermanshah province), on some soil characteristics, plant growth and some physiological traits of yellow milk-vetch (Astragalus parrowianus). Soil and plant samples of natural rangeland were taken ...
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The aim of this study was to investigate the effect of Sufivand-manganese mine (located in Harsin city of Kermanshah province), on some soil characteristics, plant growth and some physiological traits of yellow milk-vetch (Astragalus parrowianus). Soil and plant samples of natural rangeland were taken in May around Sufivand mine at different distances namely in the 100,500.1000,1500 and 2000 meters far from the mine respectively The statistical design of this project was performed based on a systematic random methodology in the five concentric circles around the Manganese mine. Six samples of soil and Astaragalus plant outside of manganese mine boundary (was not affected by mine) with the same edaphic and topographic conditions were sampled as a control treatment. The results of this project indicated that measured some physiological properties and plant growth were significantly affected by the distance from the Manganese mine. Hence, the maximum rate of root weight to canopy weight (0.85), transfer factor (1.9), root density factor (4) and proline content (0.8 μmol / g) were significantly observed at (p 0.05) compared to the control treatment at a distance of 100 meters from the mine. The minimum stem length (12 cm), total nitrogen content (3%), essential oil content (0.2%), catalase activity (0.45 Units/mg) and peroxidase activity (0.2 Units/mg) at 100 meters distance from the mine were significantly different from the control at (p 0.05). It is concluded that the closer distance to the mine the more hazard of manganese to the Rangeland plants.
Behnam Hamze
Volume 23, Issue 4 , March 2017, , Pages 876-892
Abstract
In this study, vegetation of the Bisotun Protected Area with an area of ca. 50,000 hectares in west of Iran, Kermanshah province, was studied. Samples of vegetation were collected using the Braun-Blanquet method where 66 réléves were taken from different habitats. To express the phytosociological ...
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In this study, vegetation of the Bisotun Protected Area with an area of ca. 50,000 hectares in west of Iran, Kermanshah province, was studied. Samples of vegetation were collected using the Braun-Blanquet method where 66 réléves were taken from different habitats. To express the phytosociological status of the site, data were analyzed by employing Analyse Factorielle des Correspondence (AFC) and Classification Ascendante Hiérarchique (CAH) methods using Anaphyto software. The results of phytosociological data analysis showed that there were 10 associations, three sub- associations and two communities in the area as follows: Lonicero nummulariifoliae-Aceretum cinerascentis (pistacietosum khinjuki, vicietosum variabilis, amygdaletosum orientalis), Trigonosciadio tuberosi-Feruletum haussknechtii, Prangetum pabulariae, Ferulago phialocarpae-Cruciatetum persicae, Pimpinello deverroidi-Astragaletum compacti, Astragaletum geminani, Quercetum persicae, Trifolietum scabro-pilularae, Trifolietum scabro-stdellati, Trifolio scabri-Avenetum fatuae, Trifolio scabri-Avenetum ludovicianae, Crataegetum aroniae, Amygdaletum arabicae, Bupleurum kurdicum community and Triticum boeoticum–Festuca ovina community. The establishment of the syntaxa is affected by altitude, exposure, slopes, and edaphic factors.
Seyedeh khadijeh Mahdavi; Mahshid Souri; Ahmad Choupanian
Volume 22, Issue 2 , August 2015, , Pages 289-297
Abstract
Increased concentration of carbon dioxide in the atmosphere is the main cause of climate change, having harmful effects for human beings. Reducing the amount of this gas by inhibiting industrial development and the use of artificial methods is not suitable due to the lack of economic justification. Therefore, ...
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Increased concentration of carbon dioxide in the atmosphere is the main cause of climate change, having harmful effects for human beings. Reducing the amount of this gas by inhibiting industrial development and the use of artificial methods is not suitable due to the lack of economic justification. Therefore, taking advantage of carbon storage potential in plant tissue and soil has attracted much attention in recent decades. According to the different climatic zones in the country, studying the carbon sequestration in each of these areas should be taken into consideration. Therefore, the potential of soil carbon sequestration in the mountain rangelands of Kermanshah Province was studied in three height classes and four aspects. Then, soil samples were taken from two depths of 0-30 cm and 30-60 cm in the habitats of Astragalus gossypinus and Astragalu sparrowianus. Soil organic carbon, bulk density, electrical conductivity, pH, moisture content and soil texture were measured in both soil depths. Stepwise regression results showed that soil parameters including texture, bulk density and pH, were the most important factors, affecting soil organic carbon. Based on the results of data analysis in a completely randomized factorial design, significant differences were observed for soil carbon sequestration among height classes and aspects at 1% level of significance. According to the results of mean comparisons based on SNK test, the highest amount of carbon sequestration was observed in the third height class and north aspect. Our results clearly showed that Astragalus parrowianus had a higher potential in soil carbon sequestration as compared to Astragalus gossypinus.