Assessment of eco-economic effects of urban water system connectivity project

Abstract

As one of the large ecological infrastructures, urban water system connectivity project is an important part of urban ecosystem construction. It has a variety of effects, such as conserving biodiversity, enriching urban landscape and increasing land value. It is helpful for the scienti c planning and construction of the project to systematically evaluate the effects. However, due to the complex and various effects of urban water system connectivity project, there is no complete effect system and quantitative method. In this paper, the composition and mechanism of positive and negative effects of ecological economics of urban water system connectivity project were deeply analyzed to improve the composition system of eco-economic effects. At the same time, the emergy theory was used to put forward the quanti cation method of ecoeconomic effect system. Taking the urban water system connectivity project in Xuchang as an example, it's ecological, social and economic effects were evaluated. The result showed that the average eco-economic effect of the project is 57.8 million dollars/year. Economic effect and ecological effect are signi cant, 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. It showed that the water system connectivity project in Xuchang can promote the economic development of the surrounding areas and create a good ecological environment, which will bring huge eco-economic effect to the region.

Identification and Optimization Strategy for the Ecological Security Pattern in Henan Province Based on Matching the Supply and Demand of Ecosystem Services

“…In this study, we chose water conservation, carbon sequestration and oxygen release, and habitat quality based on the following consid-erations. First, the importance of these three services to human survival and development, climate change mitigation, and biodiversity maintenance has been demonstrated in many studies [40]. Second, cultivated land accounts for 45.35% of the total area in Henan Province, and the self-sufficiency rate of food production exceeds 150%.…”

Distribution Characteristics of Drought Resistance and Disaster Reduction Capability and the Identification of Key Factors—A Case Study of a Typical Area in the Yun–Gui Plateau, China

“…2 and the 14th Five-Year Water Development Plan for Guizhou. The focus should be on projects that promote connectivity within river and lake systems, thereby enhancing the pattern of water resource allocation and improving the capacity to combat water and drought disasters [53]. Furthermore, in addition to further improving basin and regional water networks and water engineering projects, there should be a strong emphasis on the development of infrastructure to enhance drought resistance.…”