Popularizing path research on green roof project in China rural region: Cost-effectiveness assessment

In this paper cost-effectiveness assessment techniques were used to evaluate the economic impacts of the widespread emerging of new buildings being aim for green roof projects in a life-cycle scale on three typical rural building stocks. Results show contrast to traditional one the building with green roof bring out more economic benefits by providing a outstanding medium for building energy consumption decreasing, vegetable cultivating to its owner and that the economic benefits of green roof in its life-cycle scale are much bigger than the additional construction investment cost on converting traditional one to green roof building in every research region. After quantitative analysis of the cost-benefits of green roof project in rural region the currently hindering factors of popularizing the project are analyzed and countermeasures are proposed to guide green roof popularizing policy path.