价值核算体系融合物质流分析的沱江流域生态系统生产总值分配研究

Study on Distribution of Tuojiang River Basin Gross Ecosystem Product by Value Accounting System Combined with Material Flow Analysis

【目的】探究2018—2019年沱江流域生态系统生产总值(gross ecosystem product,GEP)变化特征,为流域生态补偿机制设计提供参考。【方法】利用GEP核算体系融合物质流分析开展流域城市的GEP分配,揭示流域GEP的变化特征。【结果】(1)2018年和2019年沱江流域GEP分别为4120.21亿元和4477.67亿元,其中,气候调节服务价值和文化服务价值贡献最大,二者累积贡献分别为2468.99亿元和2721.14亿元,占比分别达59.9%和60.8%;(2)流域内成都的GEP总量最大,2018年和2019年分别为1484.87亿元和1589.17亿元;泸州的GEP总量最小,分别为150.59亿元和168.48亿元,但其涨幅最高,达11.9%;(3)2018年,内江生态价值溢出最多,达427.68亿元,但2019年减少至99.76亿元;成都生态价值溢出的增量最大,从2018年的192.15亿元增加至2019年的329.49亿元;泸州由生态价值外溢转为生态价值消耗,从2018年的74.93亿元减少至2019年的-4.95亿元,由受偿主体转变为补偿主体。【结论】流域GEP因上下游生态服务供需关系呈现出价值流动特征,其变化主要受生态流量变化、政策激励和产业结构调整等影响。

[Purpose]To investigate the changes of gross ecosystem product(GEP)in Tuojiang River Basin from 2018 to 2019,providing insight into design of the ecological compensation mechanism.[Methods]GEP accounting system combined with material flow analysis was used to implement GEP allocation for river basin affiliated cities,and reveal its temporal variation.[Results]1)The GEP of Tuojiang River Basin from 2018 and 2019 was 412.021 billion yuan and 447.767 billion yuan,respectively,in which climate regulation service value and cultural service value contributed the most,their cumulative contribution was 246.899 billion yuan and 272.114 billion yuan from 2018 to 2019,accounting for 59.9%and 60.8%,respectively.2)The GEP of Chengdu was the largest in the basin,with 148.487 billion yuan and 158.917 billion yuan in 2018 and 2019,respectively,whilst the GEP in Luzhou was the smallest,with 15.059 billion yuan and 16.848 billion yuan,respectively.However,the GEP increase regarding Luzhou was the highest,reaching 11.9%.3)Neijiang exported the most(42.768 billion yuan)GEP to the basin in 2018,but it decreased to 9.976 billion yuan in 2019.Cheng-du had the largest increase in its GEP supply,from 19.215 billion yuan in 2018 to 32.949 billion yuan in 2019.Luzhou had changed from GEP supply to GEP consumption,from 7.493 billion yuan in 2018 reducing to−0.495 billion yuan in 2019,from the indemnified subject to the compensation subject.[Conclusion]Due to the supply and demand relationship between upstream and downstream in the river basin,GEP shows the characteristics of value flow,and its associated changes are mainly af-fected by ecological flow,policy incentives and industrial structure adjustment.