Abstract:

Global climate warming resulted from greenhouse gas emission already has attracted more and more attentions from governments and the public all over the world.At present,the status of greenhouse effect from large freshwater reservoirs in global climate warming became a debated issue in the academic community around the world gradually.The previous studies showed that some reservoirs for hydroelectronic generation or other purposes in Canada,U.S.A,Brazil and other counties would release additional greenhouse gas(CO2 and CH4)into atmosphere due to the inundation of soil and vegetation in reservoir area as a result of the construction and impoundment of reservoir.In this paper,an overview of greenhouse effect of reservoir on the global warming was addressed in order to understand the advances in greenhouse gas researches at home and abroad.It should be illustrated that some key issues,including observation of reservoirs greenhouse effect,case studies,the inner mechanism,emission processes and main influence factor of greenhouse gas from reservoirs,wese discussed and summarized for the sake of obtaining more information about the emission of greenhouse gas from freshwater reservoirs and providing constructive guide for hydroelectronic development in China.〖