جستجوی مقالات مرتبط با کلیدواژه "وتیورگراس" در نشریات گروه "آبخیزداری، بیابان، محیط زیست، مرتع"

The aims of this study were to evaluate the treatment efficiency and effectiveness of Vetiveria zizaniodesof two samples of unconventional water of Golgohar Mining and Industrial Company. The experimental samples were included mine wastewater and saline ground water. This research was conducted in a greenhouse at Central Water Research Laboratory of University of Tehran. This experiment was designed as Randomised Complete Block Design (RCBD) including two salinity levels with three replications during four weeks. Results showed that treatment efficiencies of Total Dissolved Solids (TDS) and Electrical Conductivity (EC) were equal 31.5 and 28.3 percentages for mine wastewater and 33 and 28 percentage for ground water on fourth week respectively. Also results indicated that among Cations and Anions, SO4 and K parameters have shown highest and lowest rates at the end of fourth week respectively. It concluded vetiver treatment system include valuable potential for unconventional water treatment.

Soil conservation projects are required in most parts of Iran due to the severe vegetation removal and accelerated soil erosion. Vegetation as a bio-engineering tool has been used for erosion and sediment control in many ecosystems around the world. Vetiver grass is a highly valuable bioengineering technique that offers various benefits to the ecosystems. This species can be used for soil erosion control in sensitive areas such as Loess of East Golestan province. This study aimed to study the effects of ecological factors on the survival of the species. The result of this study can be used as a guide to large-scale cultivation of Vetiver in the area. The effects of topographic factors (three elevation ranges, two slopes, and two different directions) on the survival and some vegetation characteristics of Vetiver cuttings were studied in the Kechik catchment. Factorial analysis of variance was used to evaluate the effects of altitude and direction on the species survival, and independent T test was also performed to study the effects of slop on the species characteristics. According to the results, topographic factors did not have any significant effects on survival of Vetiver grass in the Kechik catchment. The results indicated that the elevation ranges had significant effect on the mean of height, crown, and root length of Vetiver grass (p< 0.05), while other studied topographic factors did not have significant effects on the measured plant characteristics (p> 0.05).