most of the environmental threates and resources depletion are direct consequences of human behavior, so altering the behavior could decrease environmental problems. in this regard, identification of the effective factors on behavior would be the first step. lake urmia as a public good, needs public contribution to prevent its more deterioration that could have serious impacts on social welfare...

the paper presents the case study of the current formation of a brazilian pit lake from an iron ore mining activity. the water used for the filling of the lake comes from rain, ground water and the complementary pumpage from a close river. at its final stage, which will be reached around year 2018, lake aguas claras will have a surface area of 0.67 km2 and the depth of 234 m, which will make it...

abstract irregular extraction from agricultural wells around parishan lake, moreover fall of groundwater surface and water salty, would affect the level of lake water and move lake water into wells. in this study we have evaluated the externalities of extraction from agricultural wells around the lake. therefore feedback effect is considered between agricultural activity around the lake and lev...