نتایج جستجو برای: Volume runoff

تعداد نتایج: 328486  

Journal: :desert 2008
m. pajuohesh h. gh. refahi gh. r. zehtabian a. salehpour jam m. k. kianian

abstract in order to study the effect of super absorbent on runoff volume in slopes and various intensity of rainfall research was accomplish according to split – factorial blocks method with main treatment and two accessory treatments in three replicate . the main treatment consist of three dominant slopes (10 , 20 , 30 percent ) and accessory treatments consist of five levels of substance sup...

Journal: :اکو هیدرولوژی 0
محبوبه کیانی هرچگانی دانش ‏آموختۀ دکتری گروه مهندسی آبخیزداری، دانشکدۀ منابع ‏طبیعی، دانشگاه تربیت مدرّس سید حمیدرضا صادقی استاد گروه مهندسی آبخیزداری، دانشکده منابع ‏طبیعی، دانشگاه تربیت مدرّس حسین اسدی دانشیار گروه علوم خاک، دانشگاه تهران

investigation of inter-storm variability of runoff and soil loss characteristics helps experts and decision makes better understanding of hydrological response. however, this important has been less considered in the world, especially developing countries. the present study was therefore planned to evaluate the effect of different rainfall intensities and slopes on inter-storm variability of co...

خالدی درویشان, عبدالواحد, صادقی, سیدحمیدرضا, همایون فر, وفا,

Despite of soil disturbance, transfer to the laboratory and preparation inside the plots which themselves lead to lower validity of the results, the experimental study on runoff and erosion at plot scale with many research advantages are inevitable. However, there has been less attention to evaluate the effects of soil preparation on runoff and sediment variables. The present study was therefor...

Journal: Desert 2007
A. Salehpour Jam GH. Zehtabian H. Refahi M. Kianian M. Pajuohesh,

Abstract In order to study the effect of super absorbent on runoff volume in slopes and various intensity of rainfall research was accomplish according to split – factorial blocks method with main treatment and two accessory treatments in three replicate . the main treatment consist of three dominant slopes (10 , 20 , 30 percent ) and accessory treatments consist of five levels of substance su...

Journal: :international journal of advanced biological and biomedical research 2013
khabat khosravi haidar mirzai iman saleh

runoff estimation resulted from precipitation is the basis of more study in various develop and exploit design from water resource, then its measure and calculation due to environmental bottlenecks, always have a plenty problem. as a result of the importance of output runoff estimation and flood volume in watershed for the sake of country integrated watershed management in this study tried to 9...

ژورنال: علوم آب و خاک 2019

The using of soil conditioners to water and soil conservation is essential and also, the effect study of soil moisture on the soil conservation process and its role on changing runoff, soil erosion and sediment yield is necessary for understanding and simulating the hydrologic response of soil. Therefore, the present study was carried with the aim of investigating the effect of biochar with amo...

The most important factors affecting soil erosion and runoff include climate, soil erodibility, topography, vegetation cover and land management. In this article, an assessment of topography, slope and climate effects on the runoff production within marly lands in Zanjan province by using an artificial rain simulator. In this regard, by overlying slope, climate, and marly units of geological fo...

2016
James M. Gilbert Jennifer L. Jefferson

Hillslope scale runoff is generated as a result of interacting factors that include water influx rate, surface and subsurface properties, and antecedent saturation. Heterogeneity of these factors affects the existence and characteristics of runoff. This heterogeneity becomes an increasingly relevant consideration as hydrologic models are extended and employed to capture greater detail in runoff...

Journal: :Journal of environmental quality 2004
P D Gessel N C Hansen J F Moncrief M A Schmitt

Reducing the delivery of phosphorus (P) from land-applied manure to surface water is a priority in many watersheds. Manure application rate can be controlled to manage the risk of water quality degradation. The objective of this study was to evaluate how application rate of liquid swine manure affects the transport of sediment and P in runoff. Liquid swine manure was land-applied and incorporat...

جانی زاده, سعید, وفاخواه, مهدی,

     Prediction of flood peak discharge and runoff volume is one of the major challenges in the management of watersheds. The present study was carried out to estimate event flood peak discharge and runoff volume using artificial neural network (ANN) and adaptive neuro-fuzzy inference system (ANFIS) in Kasilian watershed, Iran. For this purpose, 15 rainfall characteristics were considered for 6...

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