نتایج جستجو برای: arid and rainfall in arid and semi
تعداد نتایج: 21762861 فیلتر نتایج به سال:
Rainwater harvesting is one of the available, low-cost, and complementary methods for groundwater use, which is highly important in arid and semi-arid regions. The purpose of this study is to estimate the amount of water that can be extracted from the annual rainfall of Aryan Shahr for non-drinking purposes. In this study, in the first stage, the rainfall data of the Aryan Shahr climatology sta...
Role of governments in expansion of household rainwater harvesting systems: introduction to experiences of some countries Vahedberdi Sheikh Associate Prof, Gorgan University of Agricultural Sciences and Natural Resources Received: 2019/09 Accepted: 2020/01 Abstract Sustainable utilization and conservation of natural resources has a key importance in intelligent development. To attain sustain...
In arid and semi-arid countries such as Iran, which are always faced water supply problems in various sectors due to climate stress, the importance of surface runoff management in watersheds is becoming increasingly apparent. One of the components of water resources management in each region is the initiatives of people living in and around watersheds based on their indigenous and empirical kno...
in recent decades, neyshabour basin as a semi-arid climate has faced with dramatic increasing of groundwater withdrawal. so, water demand management is important in this basin. in this study, the effects of evapotranspiration and rainfall on groundwater fluctuations have been considered with 22 rain gage and evaporation gage station data during 1973-2006. the average amount of rainfall and evap...
Most of the rainfall in arid and semi-arid regions, which becomes runoff immediately after rainfall, eventually evaporates and becomes inaccessible. Harvesting water from impermeable rock surfaces and storage in reservoirs or aquifer feeding is an effective way to prevent evaporation losses in these areas. The purpose of this study is to model the amount of runoff in sub-basins with impermeable...
introduction various factors like climatic conditions, vegetation, soil properties, topography, time, plant residue quality and crop management strategies affect the decomposition rate of organic carbon (oc) and its residence time in soil. plant residue management concerns nutrients recycling, carbon recycling in ecosystems and the increasing co2 concentration in the atmosphere. plant residue d...
On July 17, 2003, the National Bureau of Economic Research announced that the United States economy had troughed in November 2001 following the peak in March 2001. This makes the 2001 recession one of the shortest in U.S. history being only eight months in length. Whereas business cycles are defined in terms of the overall economies the authors of this paper investigate whether this national re...
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