This dissertation discusses two main points: one is the function mechanism and economic effects of green barriers (hereafter calls GBs); the other is the challenges of LDCs and the relevant countermeasures. According to the argumentation, GBs take effects by means of market admittance limitation and industry competitiveness. Basing on economic supply and demand theory and elasticity theory, GBs have influence on import countries by "green-tax effect" and "market admittance limitation effect". Moreover, by analyzing "Prisoner's Dilemma" in game theory, the paper elaborates the necessity and feasibility of international cooperation. Now, LDCs are still facing two big problems: exporting goods limited by GBs increase continuously and the transfer of polluting industries remains possible. Therefore, LDCs must adopt both macro and micro strategies so as to promote social sustainable development effectively.JEL classification: F18...
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