Study on fuzzy comprehensive evaluation on benefits of local public investment

The purpose of local public investment is to serve the people, so the social and environmental benefits are the measure of public investment benefit and the basic starting point of the evaluation on local public investment. In this paper, fuzzy mathematics theory was used. for the comprehensive evaluation on the social, environmental and economic benefits of Land Fund expenditure in Shenzhen, and the evaluation process was improved in order to evaluate the benefits more objectively and effectively. The calculation result showed that the proportion changes of direct and indirect benefits have little influence on total evaluation result; weight and evaluation grade of the social benefit were the highest in 3 types of benefits, the result accords with the purpose of the social benefit; weight and evaluation grade of municipal engineering were the highest, accessory facility-the lowest, the result showed that the accessory facility construction of Shenzhen was in the relatively backward condition.