生态产品价值实现政策的文本挖掘与量化评价

Text mining and quantitative evaluation of existing policies on ecological product value realization can provide decision-making suggestions for subsequent policy design,adjustment,improvement and updating.This study utilizes social network analysis and keyword clustering to conduct text mining on 1,367 policies on the realization of ecological product value issued between 2010 and 2024,clarifies the inter-governmental relations among the policy issuing bodies,the overall effectiveness strength of the existing policies,and the common characteristics of the policy texts,and constructs an evaluation index system for ecological product value realization policies based on the PMC index model,which consists of 9 first-level and 42 second-level variables,and takes 12 typical policies as the quantitative evaluation samples.Based on the PMC index model,we constructed an evaluation index system of ecological product value realization policies,including 9 first-level variables and 42 second-level variables,and used 12 typical policies as quantitative evaluation samples.The results show that:(1)In the overall relationship network,national-level policy issuers are centered on the People's Bank of China,the State Administration for Market Supervision and Regulation,the Ministry of Finance,and the Ministry of Natural Resources;provincial-level policies are centered on the people's governments and forestry and grassland departments at their own levels;and prefecture and municipal policies are centered on the forestry and grassland departments and natural resources departments at their own levels.Among them,provincial policies have the closest inter-governmental relationship.(2)The types of policy documents issued at different levels are all based on working documents,and the intensity of policy effectiveness is characterized by obvious stages,with the provincial level having the highest average intensity of policy effectiveness and the county level the lowest.(3)The existing relevant policies collectively reflect that the realization of ecological product value is closely related to ecological construction,environmental protection,resource utilization,industrial development,and mechanism and system construction,and involves green and high-quality development,incentives and constraints and value realization,ecological product production,supply and guarantee,water ecology and environment issues,territorial space optimization,and forms of realization.From the 12 policy samples selected,the existing policies for realizing the value of ecological products basically meet the requirements for applicability,but there is still much room for improvement,with an overall PMC index mean value of 5.73 and an average rating of"acceptable".There is heterogeneity in the evaluation grades of the policy samples at different levels and in different regions,with the overall performance as follows:prefecture and municipal level＞national level＞county level＞provincial level,and East＞Central＞West.China's policy on realizing the value of ecological products performs well in terms of policy focus,incentive approach,policy structure and role direction,and needs to be supplemented and improved in terms of special areas,policy objectives and policy nature.