نتایج جستجو برای: ahar
تعداد نتایج: 146 فیلتر نتایج به سال:
Extended Abstract Cold and frost is one of the most important climatic parameters in the agricultural climate, and the damage caused by them reduces the possibility of producing many agricultural and horticultural products in vulnerable areas. Cold and frost is one of the climatic hazards that annually causes damage to various activities. The agricultural sector is the most important part of...
Drought is the most important natural disaster, due to its widespread and comprehensive short and long term consequences. Several meteorological drought indices have been offered to determine the features. These indices are generally calculated based on one or more climatic elements. Due to ease of calculation and use of available precipitation data, SPI index usually was calculated for any des...
Introduction Agriculture sector is actually known as an economic sector, as it is said that economic growth would be impossible in the absence of agriculture growth. Nowadays, by using accurate scientific researches as an inspiration source and investigating environment potentials and capabilities of every area we can achieve comprehensive agricultural development and principles. In this way...
1. introduction droughts are long-term phenomena that can affect large areas and cause severe downturn in economic and social activities. recognizing this phenomenon, its features and properties, knowledge of facilities, capabilities and talents of areas and providing short and long term solutions leads to the effort of the surface water resource managers to prepare for drought mitigation. the ...
doi: 10.5829/idosi.ijee.2015.06.01.08 bridges and roads). In the course of carrying out these activities, the environment is degraded and thereby damaging the ecosystem and the landscape, and offsetting the already fragile ecological balance [1]. Obviously, LUCC studies provide a great and significance information to strengthen the protection of land resources, determent unreasonable exploitati...
doi: 10.5829/idosi.ijee.2015.06.01.08 bridges and roads). In the course of carrying out these activities, the environment is degraded and thereby damaging the ecosystem and the landscape, and offsetting the already fragile ecological balance [1]. Obviously, LUCC studies provide a great and significance information to strengthen the protection of land resources, determent unreasonable exploitati...
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