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With the rapid development of China 's cities , a growing number of environmental problems , ecological problems, economic problems attendant . Green roof for the comprehensive utilization of land , to ease the tension in the urban land and make a strong contribution to building sustainable conservation-oriented society , is a strategy worthy of promotion . Promote the development of green roof need to improve policy guidance , technical support and economic support for the actual situation of China 's current lack of related policies has become a bottleneck to block the development of green roof . Therefore, an effective strategy to draw the international community has conducted successful experiments to study the environment of China 's policy , put forward a set of green roof development of public policy system to adapt our today 's national conditions , is an important and urgent task . This study is divided into three sections : What is the green roof ? How to green roof ? , And departure from a policy point of view , the study of the development means and the direction of development of the domestic and international green roof . First, the article simply summarizes the basic knowledge and basic conditions of the construction of housing greening , explores the origins and development of the green roof course ; followed by the analysis of the economic, environmental , ecological , and social aspects of the benefits of the green roof , prove the development the urgency and importance of the green roof ; then , through the development of national and local urban green roof is better in Germany , the United States, Japan and other international policy research , summed up the general development strategy without geographical and cultural constraints , and compared with the existing norms guide , the lack of comparative study of China 's relevant policies and norms ; Finally, the combination of China 's laws and regulations specific to the analysis and investigation of civil willingness to integrate the green roof public set suitable for China's national conditions . development strategy , to withstand the carrier and , depending on the social , corresponding guidance .
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