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 scientific 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 quantification method of eco-economic 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 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. 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.

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Experimenting Transition to Sustainable Urban Drainage Systems – Identifying Constraints and Unintended Processes in a Tropical Highly Urbanized Watershed

10.20944/preprints202011.0680.v1 ◽

2020 ◽

Author(s):

Fernando Chapa ◽

María Pérez ◽

Jochen Hack

Keyword(s):

Green Infrastructure ◽

Water Cycle ◽

Learning Experience ◽

Water System ◽

Urban Environments ◽

Urban Systems ◽

Urban Water ◽

Negative Effects ◽

Urban Water System ◽

Local Decision

Green Infrastructure promotes the use of natural functions and processes as potential solutions to reduce negative effects derived from anthropocentric interventions such as urbanization. In cities of Latin America, for example, the need for more nature-sound infrastructure is evident due to its degree of urbanization and degradation of ecosystems, as well as the alteration of the local water cycle. In this study, an experimental approach for implementation of a prototype is presented. The experiment took place in a highly urbanized watershed located in the Metropolitan Area of Costa Rica. Initially, understanding the characteristics of the study area at different scales was achieved by applying the Urban Water System Transition Framework to identify the existing level of development of the urban water infrastructure, and potential future stages. Subsequently, preferences related to spatial locations and technologies were identified from different local decision-makers. Those insights were adopted to identify a potential area for implementation of the prototype. The experiment consisted on an adaptation of the local sewer to act as a temporal reservoir to reduce the effects derived from rapid generation of stormwater runoff. Unexpected events, not considered initially in the design, are reported in this study as a means to identify necessary adaptations of the methodology. Our study shows from an experimental learning-experience that the relation between different actors advocating for such technologies influences the implementation and operation of non-conventional technologies. Furthermore, the perception of security associated to green spaces was found as a key driver to increase the willingness of residents to modify their urban environments. In consequence, those aspects should be carefully considered as factors of designs of engineering elements when they are related to complex socio-ecological urban systems.

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Study on Ecological Effect of Urban Landscape Water in Jinan, Shandong Province

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.826 ◽

2014 ◽

Vol 675-677 ◽

pp. 826-829

Author(s):

Qiao Yi Xu ◽

Wei Ping Wang ◽

Hai Yan Deng

Keyword(s):

Land Surface ◽

Urban Landscape ◽

Regional Climate ◽

Water System ◽

Ecological Effect ◽

Urban Water System ◽

Landscape Water ◽

Research Findings ◽

The Impact ◽

Urban Landscape Water

As an important part of urban water system, urban landscape water plays a significant role in the improvement of urban ecological effect, such as adjusting regional climate, increasing water vapor content and reducing urban heat land effect. At present, the pattern of landscape water has a lot of research findings, but quantitative analysis of the impact on ecological function of urban landscape water is too little. This paper took hydrologic station upstream in Huangtaiqiao in Jinan city as study area and respectively compared ecological effect of landscape water with land surface on adjusting regional temperature from two periods of annual and summer evaporation. The result shows that landscape water does better in this aspect. So it is essential to pay extraordinary attention to reasonably planning landscape water of land use in the future in order to give full play to its ecological effect.

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A Study on the Strategy of Constructing Urban Water System in North Cold City - A Case Study of Dolon-Nuur Town, Inner Mongolia

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.507.576 ◽

2014 ◽

Vol 507 ◽

pp. 576-581

Author(s):

Li Hua Rong ◽

Hui Fen Lv

Keyword(s):

Flood Control ◽

Urban Landscape ◽

Water System ◽

Water Structure ◽

Urban Water ◽

Special Effects ◽

Urban Water System ◽

Use Of Resources ◽

Human And Nature ◽

And Function

Urban water system is the lifeblood of urban development and it has special effects in the urban landscape structure and function. In urban Planning and construction, water system should be carefully constructed under the water decides urban concept and the principles of overall coordination, ecological priority and local characteristics to realize the harmony of human and nature. The master plan of Dolon-nuur Town discusses the strategy of constructing urban water system in north winter city, and put forward to build perfect urban water structure, rich waterfront function, pay attention to flood control and detention, conform the monsoon, waterfront greening collocation, make full use of resources of ice and snow and avoid the pollution, in view of the cold city features.

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The Construction of Xi'an Urban Overall Water Environment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.374-377.238 ◽

2011 ◽

Vol 374-377 ◽

pp. 238-241

Author(s):

Dong Yu

Keyword(s):

Tang Dynasty ◽

Urban Landscape ◽

Water Environment ◽

Water System ◽

Living Environment ◽

Water Diversion ◽

Urban Water ◽

Metabolic Pattern ◽

Planning Strategy ◽

Urban Water System

The natural features and patterns of "Eight water Chang'an" is one of important symbols of the Tang Dynasty Culture,This paper discusses from the urban planning level the necessity of constructing the " Chang'an eight water" and its basic principles and methods, explores ways and means to achieve the objective from two levels of the long-term planning strategy and the gradual implementation.The paper propose in the course of restoration "Chang'an eight water" urban landscape basal, an overall planning must be developed from the perspective of urban water environment to change the linear metabolic pattern, and to construct the urban water system recirculating network.With the existing situation of urban water environment, trying to solve on-site problems of urban rain, sewage purification from the self-circulation. Considering the integrated relations among urban water catchment, water storage, water diversion projects and making them penetration with each other, from the point to surface progressively recovering the city "metabolic function" as a basic ecological node to improve the urban living environment.

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Urban Water System Dynamics and Conflict Resolution

Urban Water Engineering and Management ◽

10.1201/b15857-11 ◽

2010 ◽

pp. 427-461

Keyword(s):

Conflict Resolution ◽

System Dynamics ◽

Water System ◽

Urban Water ◽

Urban Water System

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Managing Apparent Loss and Real Loss from the Nexus Perspective Using System Dynamics

Water ◽

10.3390/w14020231 ◽

2022 ◽

Vol 14 (2) ◽

pp. 231

Author(s):

Seo Hyung Choi ◽

Bongwoo Shin ◽

Eunher Shin

Keyword(s):

System Dynamics ◽

Water Loss ◽

Management Strategies ◽

Water System ◽

Economic Feasibility ◽

Water Utilities ◽

Urban Water ◽

Water Losses ◽

Urban Water System ◽

Apparent Loss

When water utilities establish water loss control programs, they traditionally focus on apparent loss rather than real loss when considering economic feasibility in the water sector. There is an urgent need for new management approaches that can address complex relationships and ensure the sustainability of natural resources among different sectors. This study suggests a novel approach for water utilities to manage water losses from the water-energy (WE) Nexus perspective. The Nexus model uses system dynamics to simulate twelve scenarios with the differing status of water loss and energy intensities. This analysis identifies real loss as one of the main causes of resource waste and an essential factor from the Nexus perspective. It also demonstrates that the energy intensity of each process in the urban water system has a significant impact on resource use and transfer. The consumption and movement of resources can be quantified in each process involved in the urban water system to distinguish central and vulnerable processes. This study suggests that the Nexus approach can strongly contribute to quantifying the use and movement of resources between water and energy sectors and the strategic formulation of sustainable and systematic water loss management strategies from the Nexus perspective.

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Stress-Testing Framework for Urban Water Systems: A Source to Tap Approach for Stochastic Resilience Assessment

Water ◽

10.3390/w14020154 ◽

2022 ◽

Vol 14 (2) ◽

pp. 154

Author(s):

Dionysios Nikolopoulos ◽

Panagiotis Kossieris ◽

Ioannis Tsoukalas ◽

Christos Makropoulos

Keyword(s):

Water Distribution ◽

Stress Testing ◽

Water Cycle ◽

Water System ◽

Operating Conditions ◽

Distribution Model ◽

Generation Model ◽

Urban Water ◽

Testing Framework ◽

Urban Water System

Optimizing the design and operation of an Urban Water System (UWS) faces significant challenges over its lifespan to account for the uncertainties of important stressors that arise from population growth rates, climate change factors, or shifting demand patterns. The analysis of a UWS’s performance across interdependent subsystems benefits from a multi-model approach where different designs are tested against a variety of metrics and in different times scales for each subsystem. In this work, we present a stress-testing framework for UWSs that assesses the system’s resilience, i.e., the degree to which a UWS continues to perform under progressively increasing disturbance (deviation from normal operating conditions). The framework is underpinned by a modeling chain that covers the entire water cycle, in a source-to-tap manner, coupling a water resources management model, a hydraulic water distribution model, and a water demand generation model. An additional stochastic simulation module enables the representation and modeling of uncertainty throughout the water cycle. We demonstrate the framework by “stress-testing” a synthetic UWS case study with an ensemble of scenarios whose parameters are stochastically changing within the UWS simulation timeframe and quantify the uncertainty in the estimation of the system’s resilience.

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