Investigation on Environmental Factors Influencing Water Erosion (case study:Taleghan basin, Varkesh subbasin)
author
Abstract:
The purpose of current study is to investigate the effects of some of environmental factors on erosion value, to find the most important governing factors and the relation between erosion of working units and environmental factors (soil characteristics, slope, aspect, elevation, lithology, geomorphology faces and vegetation cover percentage). Working units map was prepared using geomorphology method. This map was derived by overlaying slop, aspect, elevation, lithology and geomorphology faces maps. In order to study plant cover random-systematic sampling in each working unit was conducted in 10 plots. Regarding the species type and distribution the area of each plot was determined based on the minimal area method. Canopy cover of species was determined in each plot. Furthermore, 5 profiles were sampled within the working units to study soil characteristics in 0-50 cm depth. Subsequently, the texture, percent of lime, organic matter, gravel, pH and EC were measured. Erosion value was determined in each working unit using E.P.M. method. Statistical analysis was done using the Principal Components Analysis (PCA) through PC-ORD4 software program. The results showed that among environmental factors, vegetation cover, lime percentage, face and organic matter as the first set of factors determine the change in erosion value by 33.99% while the second set of factors, including loam, stone resistance and clay percentage play contributes to the change by 17.295%. These two sets of factors altogether explain 51.288% of erosion value variation in Varkesh basin.
similar resources
an investigation on influencing factors on tourists shopping attitude of iranian handmade carpet in isfahan
چکیده ندارد.
15 صفحه اولThe Study of Effect of Vegetation Cover Factor on the Water Erosion Case Study: Razin Basin
One of the important parameters, that reduce negative influence of the other known parameters, is cover vegetation. In this study were estimated cover vegetation influence in soil erosion of Razin basin in Kermanshah province that is our study area. The first step is preparation map of NDVI obtained & category of cover vegetation by the Landsat TM data. Then Revised Universal Soil Loss Equation...
full textEnvironmental Factors Influencing Epidemic Cholera
Dear Sir: We have concerns with the recent publication by Jutla and colleagues, which aims to describe the environmental factors influencing epidemic cholera. 1 Regarding cholera in Haiti, the authors challenged the findings of many studies showing that the epidemic likely originated from the importation of toxi-genic Vibrio cholerae by Nepalese peacekeepers in October 2010. 2–5 Instead, they a...
full textDenitrification and environmental factors influencing nitrate removal in Guaymas Basin hydrothermally altered sediments
We measured potential nitrate removal and denitrification rates in hydrothermally altered sediments inhabited by Beggiatoa mats and adjacent brown oil stained sediments from the Guaymas Basin, Gulf of California. Sediments with Beggiatoa maintained slightly higher rates of potential denitrification than did brown sediments at 31.2 ± 12.1 versus 21.9 ± 1.4 µM N day(-1), respectively. In contrast...
full textSoil Erosion Model Implication (Case Stady: Minab Basin)
Soil erosion is an inevitable phenomenon that additive erosion caused Soil degradation. Additive Soil erosion is one of the major obstacles to achieve the development of agriculture and natural resources. Thus, knowledge of the status and trends of soil erosion and sediment production in the watersheds is one of the most important tools for planning and decision-making. Models are the most popu...
full textMy Resources
Journal title
volume 1 issue 4
pages 108- 123
publication date 2012-03
By following a journal you will be notified via email when a new issue of this journal is published.
No Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023