Abstract
As one of the large ecological infrastructures, the urban water system connectivity (UWSC) project is an important part of urban ecosystem construction. It is helpful for the scientific planning and construction of the project to systematically evaluate the effects. However, due to the complex and various effects of UWSC project, there is no complete effect system and quantitative method. Against this backdrop, the composition and mechanism of positive and negative effects of ecological economics of UWSC project were deeply analyzed to improve the composition system of eco-economic effects in this study. At the same time, the emergy theory was used to put forward the quantification method of eco-economic effect system. Taking the UWSC project in Xuchang as an example, its ecological, social, and economic effects were evaluated. The result showed that the average eco-economic effect of the project is 49.97 million dollars/year. Economic effect and ecological effect are significant, accounting for 82.49% and 15.89% of total effect, respectively. This study can provide reference for comprehensive and unified assessment of eco-economic effects of UWSC project.
Highlights
As one of the large ecological infrastructures, urban water system connectivity project is an important part of urban ecosystem construction
Economic effect and ecological effect are significant, accounting for 88.83% and 9.77% of total effect, respectively. The former is mainly due to land value increment, and the latter is principally owing to biodiversity conservation
River system is the carrier of water resources, the component of ecological environment and the foundation of economic and social development (Olaj et al 2012)
Summary
River system is the carrier of water resources, the component of ecological environment and the foundation of economic and social development (Olaj et al 2012). As an urban open space, urban water system connectivity project has eco-economic effects, such as improving water quality, providing recreational places and increasing the value of real estate (Anderson and West 2006; Brander and Koetse 2011). It can provide good resources and ecological environment for urban development. The advantages and disadvantages of the urban water system connectivity project can be objectively assessed by analyzing and quantifying the ecological, social and economic effects of the project, so as to carry out scientific and reasonable planning and construction of the project and realize the sustainable development of the city (Grizzetti et al 2016)
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