Institute of Circular Economy, Beijing University of Technology, Beijing, China.
Center for Energy, Environment and Ecology Research, UR-BNU, Beijing Normal University, 100875, China.
Sci Total Environ. 2021 Nov 25;797:148817. doi: 10.1016/j.scitotenv.2021.148817. Epub 2021 Jul 1.
Research on the overall social, economic and environmental (SEE) impacts of water resources projects (WRP) has gradually attracted attention. However, the WRP-related indirect impacts as linked through various supply chains from a number of disaggregated sectors and their interactive relationship are rarely studied. Here in this study, under a general disaggregated input-output (IO) framework, a distributive Three Gorges Project input-output (DTGIO) model is developed to investigate the composite effects of Three Gorges Project (TGP) based on a disaggregated TGP-IO table for the Yangtze River economic belt (YREB). DTGIO model could facilitate exploring i) the interactions among key TGP-related effects from production and consumption sides; ii) the impacts of various TGP-induced changes on specific SEE sectors; iii) the detailed TGP water flow paths as induced by the final demand of each province in YREB. It is discovered that the TGP has the greatest impact on agriculture. Although the construction of the TGP submerged a large amount of land and adversely affected agriculture in the reservoir area, its effective flood control function can reduce flooding in the "land of fish and rice" and create favorable conditions for agricultural development. The connection between the TGP and the inner provinces of YREB is mainly realized by the hydropower generation sector. For the economic benefits of the TGP, the economic benefits of the investment of various sectors of the TGP are diversified, which should be adjusted according to the government's objectives. For the ecological effects of the TGP, the interaction of sectors (especially the irrigation service sector and hydropower generation sector on consumption side, and the hydropower generation sector and water supply sector on production side) should be valued and a sense of joint management for the relevant sectors of TGP should be established.
水资源项目（WRP）的社会、经济和环境（SEE）综合影响研究逐渐受到关注。然而，很少有研究关注 WRP 相关的间接影响，这些影响通过来自多个细分部门的各种供应链联系在一起，以及它们之间的互动关系。在本研究中，根据一般的细化投入产出（IO）框架，开发了三峡工程投入产出（DTGIO）模型，以基于长江经济带（YREB）的细化三峡工程投入产出表来研究三峡工程（TGP）的综合影响。DTGIO 模型可以促进探索：i）生产和消费方面的关键 TGP 相关效应之间的相互作用；ii）各种 TGP 诱发变化对特定 SEE 部门的影响；iii）YREB 中每个省份的最终需求引起的详细 TGP 水流路径。结果发现，TGP 对农业的影响最大。尽管 TGP 的建设淹没了大量土地，并对库区农业产生了不利影响，但它有效的防洪功能可以减少“鱼米之乡”的洪水泛滥，为农业发展创造有利条件。TGP 与 YREB 内部省份的联系主要通过水电发电部门实现。对于 TGP 的经济效益，TGP 各部门的投资经济效益多样化，应根据政府的目标进行调整。对于 TGP 的生态效益，应重视部门之间的相互作用（特别是消费侧的灌溉服务部门和水电发电部门，以及生产侧的水电发电部门和供水部门），并建立 TGP 相关部门的联合管理意识。
