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Abstract
Karkheh protected area due to natural potential target evaluating nature tourism to seriously address violations using multiple criteria evaluation method of spatial zoning capability of ecotourism in the study.In this regard, based on the different documentation libraries and scientific review articles, 23 were collected by index. In this study were tried all operations for the preparation, management and analysis of data and information on the Builder environment using the Arc GIS_10.5 software and techniques for network analysis process  (ANP) the areas prone to specify the nature of the evaluation and tourism. For this purpose, first, the factors affecting the process of nature tourism potential in the region and determine the required maps were prepared.Finally, using the linear combination weighting techniques (WLC) final maps user area for potential tourism development nature. The results of this study showed that 24 percent of the level region has the potential of appropriate floor (6287994 m²), 60 percent of the surface area has be medium (16162497 m²) and 16 percent of the surface area has be inappropriate (4400870 m²) for the development of the tourist nature of the user. Generally in the region of North-Eastern and central zones be more the direction of development of tourism of nature than the other zones.
 

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Dam construction and development projectshave serious effects on environmental parameters. Therefore, environmental risk assessment of the dam is one of the most important aspects of environmental risk management in these projects. The purpose of this study is to provide a new model for assessing the environmental risks of dams during the construction phase. To this end, after identifying environmental risks and using the EFMEA method, the RPN for each environmental aspect was calculated and classified. The VIKOR method was used to assess and prioritize identified environmental risks. The results show that in the EFMEA method and by comparing the calculated risks, the risk of pollution of the Balarood river with, RPN 125 is the first priority. In the VIKOR method, the risk of water pollution (high, medium, low) with weight (1,300, 1,000 and 0,700) was identified as the most important risk. In this paper, EFMEA and VIKOR methods are used to assess the environmental risk of the dam. The most important modified action to reduce environmental risks is the construction and completion of wastewater treatment plants for industrial units.