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一、社会折现率社会折现率,是指费用效益分析中用来作为基准的资金收益率。它是从动态和国民经济全局的角度评价项目经济效益的一个重要参数。人们无论从事何种经济活动都需要一定的时间,而且投入和产出在时间上往往是不一致的。在经济活动中,厂商首先必须拥有或借贷到一笔资金,用来购买各种生产要素投入生产或经营活动,在经过一定时间之后,投入才陆续转化成产出,使厂商能收回原有资金
First, the social discount rate Social discount rate, refers to the cost benefit analysis used as a benchmark of the financial rate of return. It is an important parameter to evaluate the economic benefits of the project from the perspective of the dynamics and the overall national economy. It takes time for people to engage in any kind of economic activity, and their inputs and outputs tend to be inconsistent in time. In economic activities, firms must first possess or lend a sum of money to purchase various kinds of factors of production and put them into production or business activities. After a certain period of time, investment will be gradually transformed into output so that manufacturers can recover their original funds