limitation of water resources in the earth has turned it as a valuable economic commodity. accordingly, the agricultural sector of which according to studies has the largest wasted water should be managed. therefore, it is advisable to use the application of methods and programming models such as the decision support system along with the abilities of gis in order to management of the water res...

abstract- inadequate water supply is the major problem for agriculture in arid and semi-arid regions. thus, effective management should be considered for water resources planning. in this research, a model was provided which is able to estimate optimal land and water allocation in the doroodzan irrigation network. optimal water management model was used at farm level to evaluate different defic...

according to the current state of water resources and the increasing demand for water, the supply of future needs will be faced with serious constraints. on the one hand, the failure to supply sometimes causes social and political problems. on the other hand, improper exploitation of water resources will lead to irreparable damages. therefore, the use of optimization models for the planning of ...

sustainable ecotourism is a nature oriented tourism that maintains a sound relationship with the natu-ral environment, and contributes to its conservation. ecological understanding is a prerequisite of sus-tainable ecotourism. nature conservation and ecotourism are interdependent. there should be a sym-biotic relationship between the two, in which, both derive sustainable benefits in a lengthy ...

introduction continuing environmental crisis, human was aware of the necessity for revising its method of dealing with the environment during the development. therefore, changing the development paradigm from classical to modern, sustainable development and environmental issues become major pillars of development and achieve sustainable development depends on the complete recognition of environ...