【摘要】 屋顶绿化的成本高是屋顶绿化推广的主要阻碍因素。根据国外的实践经验,采用政府补贴的形式进行解决,然而补贴是否充分,能否有效地促进屋顶绿化的建设还有待解决。文章通过对北京市屋顶绿化的建设成本和效益的全寿命周期分析,并且考虑资金时间价值和通货膨胀的影响,采用经济学的方法说明北京市现行的补贴政策不充分,不能有效地推进屋顶绿化的建设。同时,给出一个最低的合理补贴值。更多还原

【Abstract】 The high cost of green roof is a major obstructive factor to promote green roof. According to practical experience abroad, use the form of government subsidies to resolve it, but it is yet to be resolved whether subsidy is adequacy, and can effectively promote the construction of green roofs. Based on life-cycle cost and benefits analysis of green roofs in Beijing, this article takes into account the time value of money and the effect of inflation, and uses the methods of economics to prove that Beijing’s current subsidy policy is not sufficient and can not effectively promote the construction of green roofs. Meanwhile, it gives a reasonable and minimum subsidy.更多还原