Abstract
To comprehend the present conditions and the influences of environmetal problems for the nation, it is important that the environmental policy makers widely collect information about environmental problems from the nation, manage that information, and provide them to push forward problem solution. But, the existing evaluation methods cannot appreciate information collection and provision in information policies enough. Therefore I thought about describing a role of each policy actor by information flowing structure in the basis by a policy network and social network analysis as an evaluation method of informational approaches. Making an Eco-mark an example, I clarified a characteristic by information exchange of each policy actor and problems of the information flowing by using the centrality analysis that network analysis includes.
