Since the National Environmental Policy Act（NEPA）was implemented in the United States in 1970’s, the Environmental Impact Assessment (EIA) has become one of the major strong tools for protecting the environment after decades of development and applications. However, because of the limitations such as later timing of initiation, lower levels for applying, and different economic, social, and political situations, it was possible that the EIA could not function as expected. Thus, the Strategic Environmental Assessment (SEA) implemented and promoted in the international society was employed for solving those possible problems brought about by traditional EIA.

Strategic Environmental Assessment,SEA,EIA,PPPs