نتایج جستجو برای: chehel chai watershed
تعداد نتایج: 17019 فیلتر نتایج به سال:
اثر برخی ویژگیهای خاک بر تولید رواناب و هدررفت خاک در اراضی کشاورزی حوزه آبخیز چهلچای استان گلستان
Soil erosion is one of the most important factors affecting soil quantity and quality and is environmental problems in developing countries like Iran. It can have deteriorating effects on ecosystems. This research was carried out in farm lands of the Chehel-Chai watershed, Golestan province to investigate the effect of soil properties on runoff and soil loss. Runoff and soil loss were measured ...
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the aim of this study is assessing and mapping landslide susceptibility in watershed of semiarid mountain areas. saeedabad-chai watershd is located on the northwest of iran and the north of sahand mountain. this study is using bivariate statistical analysis (bsa), weights-of-evidence (woe),gis. the results of this assessment show that causative factors as slope (âwæ= + 3.965), landuse(âwæ...
the main purpose of the study is determination of the pollutants hazard potential as well as environmental vulnerability of qarah su river. first the most significant pollutant sources in the qarah su river watershed were identified and then accordingly the pollution hazard potential rate was calculated in universal ranking system model setting. then, by generalizing the algebraic sum of the re...
The main purpose of the study is determination of the pollutants hazard potential as well as environmental vulnerability of Qarah Su River. First the most significant pollutant sources in the Qarah Su river watershed were identified and then accordingly the pollution hazard potential rate was calculated in Universal Ranking System Model setting. Then, by generalizing the algebraic sum of the re...
Studying climate change impact on hydrological variables such as runoff has attracted more attention over recent years mainly due to the imposed imbalance in climate system by greenhouse gas emission. Hence, initially in this research, the trend and abrupt changes of hydro – climatic variables were studied using data mining approaches in 18 stations over 40 years (1972-2011) in Aji-Chai waters...
Watershed is a complex and dynamic system and is considered to be a planning and management unit. It is important to consider all technical, social, economic, physical, ecological and administrative dimensions in the process of planning and management of watersheds. Given the fact that there are complex interactions among these dimensions, implementing integrated watershed assessment and mana...
Determination of Spatial Pattern Woody Species using Point Analysis (Case Study: Chehel-tan Dehbakri Forest, Kerman Province)
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