Evaluation of water security: an integrated approach applied in Wuhan urban agglomeration, China

2012 ◽  
Vol 66 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Dongguo Shao ◽  
Fengshun Yang ◽  
Chun Xiao ◽  
Xuezhi Tan
Keyword(s):  
Flood Control ◽  
Evaluation Model ◽  
Water Environment ◽  
Rank Correlation ◽  
Water Security ◽  
Integrated Approach ◽  
Urban Agglomeration ◽  
State Of Water ◽  
Wuhan Urban Agglomeration ◽  
Good Agreement

To evaluate water security, the Water Resources Sustainability Evaluation Model has been developed. The model employs four criteria (economic development, flood control security, water supply security, and water environment security) and has 22 indicators, integrating them using their relative weights. The model is applied to evaluate the water security of Wuhan urban agglomeration, China. The values of the indicators are normalized using the exponential efficacy functions based on the law of diminishing marginal utility. The evaluation results show that, overall, the state of water security in Wuhan urban agglomeration is good, which is in good agreement with the true situation. The comparison between the results of the model and other three evaluation methods by the Spearman coefficient of rank correlation verifies the science and reliability of the developed model. Consequently, it is concluded that the model can be an effective tool for evaluating the states of water security and provide a basis on which to create policies for improving inadequacies in water security.

scholarly journals A Framework for Assessing Water Security and the Water–Energy–Food Nexus—The Case of Finland

2019 ◽  
Vol 11 (10) ◽  
pp. 2900 ◽  
Author(s):  
Mika Marttunen ◽  
Jyri Mustajoki ◽  
Suvi Sojamo ◽  
Lauri Ahopelto ◽  
Marko Keskinen
Keyword(s):  
Environmental Sustainability ◽  
Water Environment ◽  
Water Security ◽  
Well Being ◽  
The State ◽  
Security Assessment ◽  
Stability Functions ◽  
State Of Water ◽  
The Stability ◽  
Water Issues

Water security demands guaranteeing economic, social and environmental sustainability and simultaneously addressing the diversity of risks and threats related to water. Various frameworks have been suggested to support water security assessment. They are typically based on indexes enabling national comparisons; these may, however, oversimplify complex and often contested water issues. We developed a structured and systemic way to assess water security and its future trends via a participatory process. The framework establishes a criteria hierarchy for water security, consisting of four main themes: the state of the water environment; human health and well-being; the sustainability of livelihoods; and the stability, functions and responsibility of society. The framework further enables the analysis of relationships between the water security criteria as well as between water, energy and food security. The framework was applied to a national water security assessment of Finland in 2018 and 2030. Our experience indicates that using the framework collaboratively with stakeholders provides a meaningful way to improve understanding and to facilitate discussion about the state of water security and the actions needed for its improvement.

scholarly journals Identification of regional water security issues in China, using a novel water security comprehensive evaluation model

2020 ◽  
Vol 51 (5) ◽  
pp. 854-866
Author(s):  
Jiping Yao ◽  
Guoqiang Wang ◽  
Baolin Xue ◽  
Gang Xie ◽  
Yanbo Peng
Keyword(s):  
Flood Control ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Water Security ◽  
Ecological Security ◽  
Security Issues ◽  
Comprehensive Evaluation Model ◽  
Security Index ◽  
Regional Water ◽  
Resource Security

Abstract In order to solve regional water security issues, such as shortage of water resources, the aggravation of water pollution, the destruction of the ecological environment, etc., this study proposed the flood control security index, resource security index and ecological security index, respectively, according to the construction principle of human development index. Based on the above security indexes, a novel water security comprehensive evaluation model is established by combining the coupling coordination degree model and the state space model. The proposed model has the advantage of simple operation and fast data speed, which is convenient for water security evaluation in different periods and regions. Taking China as an example, the water security conditions were evaluated from 2007 to 2016 for 31 provincial-level administrative regions in China, including flood control security index, resource security index, ecological security index and water security level of each region, and the specific problems of water security in each region were obtained. The evaluation results are consistent with the actual situation in each region, which provides the scientific basis for the local government authorities to formulate the corresponding regional water security policy.

scholarly journals Construction of rural water ecological civilization index system in China

2020 ◽  
Vol 15 (3) ◽  
pp. 797-806
Author(s):  
Yanbin Li ◽  
Hongxing Li ◽  
Daoxi Li ◽  
Zezhong Zhang ◽  
Ya Feng
Keyword(s):  
Index System ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Water Environment ◽  
Water Security ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Analysis Model ◽  
Ecological Civilization ◽  
Rural Water

Abstract Water ecological civilization is an important component and basic guarantee of ecological civilization. With the comprehensive development of ecological civilization in China, the practice of water ecological civilization village construction has been carried out one after another. The establishment of an evaluation index system of rural water ecological civilization is an important step in the construction of rural water ecological civilization from the theoretical stage to the practical application stage. Based on China's rural water conditions, this study constructed an evaluation index system, including 21 evaluation indicators of seven subsystems: water security, water environment, water ecology, water management, water landscape, water culture, and regional characteristic indicators. The indicator weights are determined by the analytic hierarchy process, a set-pair analysis model is established, and typical rural were selected for instance verification. The results show that the evaluation index system of rural water ecological civilization is reasonable, and the comprehensive evaluation model is also feasible.

scholarly journals Quantifying the Contribution of Agricultural and Urban Non-Point Source Pollutant Loads in Watershed with Urban Agglomeration

Water ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1385
Author(s):  
Min Zong ◽  
Yuanman Hu ◽  
Miao Liu ◽  
Chunlin Li ◽  
Cong Wang ◽  
...  
Keyword(s):  
Point Source ◽  
Urban Areas ◽  
Assessment Tool ◽  
Water Environment ◽  
Integrated Approach ◽  
Urban Agglomeration ◽  
Watershed Scale ◽  
Event Mean Concentration ◽  
Urban Catchment ◽  
Nps Pollution

Urban agglomeration is a new characteristic of the Chinese urbanization process, and most of the urban agglomeration is located in the same watershed. Thus, urban non-point source (NPS) pollution, especially the characteristic pollutants in urban areas, aggravates NPS pollution at the watershed scale. Many agricultural studies have been performed at the watershed scale; however, few studies have provided a study framework for estimating the urban NPS pollution in an urban catchment. In this study, an integrated approach for estimating agricultural and urban NPS pollution in an urban agglomeration watershed was proposed by coupling the Soil and Water Assessment Tool (SWAT), the event mean concentration (EMC) method and the Storm Water Management Model (SWMM). The Hun-Taizi River watershed, which contains a typical urban agglomeration and is located in northeastern China, was chosen as the study case. The results indicated that the per unit areas of total nitrogen (TN) and total phosphorus (TP) in the built-up area simulated by the EMC method were 11.9% and 23 times higher than the values simulated by the SWAT. The SWAT greatly underestimated the nutrient yield in the built-up area. This integrated method could provide guidance for water environment management plans considering agricultural and urban NPS pollution in an urban catchment.

scholarly journals The model and simulation of low impact development of the sponge airport, China

2019 ◽  
Vol 20 (2) ◽  
pp. 383-394 ◽  
Author(s):  
Jing Peng ◽  
Jiayi Ouyang ◽  
Lei Yu ◽  
Xinchen Wu
Keyword(s):  
Flood Control ◽  
Low Impact Development ◽  
Water Environment ◽  
Drainage System ◽  
Practical Significance ◽  
International Airport ◽  
Model And Simulation ◽  
Impervious Area ◽  
Before And After ◽  
Airport Runway

Abstract Recently urban waterlogging problems have become more and more serious, and the construction of an airport runway makes the impervious area of the airport high, which leads to the deterioration of the water environment and frequent waterlogging disasters. It is of great significance to design and construct the sponge airport with low impact development (LID) facilities. In this paper, we take catchment N1 of Beijing Daxing International Airport as a case study. The LID facilities are designed and the runoff process of a heavy rainfall in catchment N1 is simulated before and after the implementation of LID facilities. The results show that the total amount of surface runoff, the number of overflow junctions and full-flow conduits of the rainwater drainage system in catchment N1 of Beijing Daxing International Airport are significantly reduced after the implementation of the LID facilities. Therefore, the application of LID facilities has greatly improved the ability of the airport to remove rainwater and effectively alleviated the risk of waterlogging in the airport flight area. This study provides theoretical support for airport designers and managers to solve flood control and rainwater drainage problems and has vital practical significance.

scholarly journals Objectives and Indexes for Implementation of Sponge Cities—A Case Study of Changzhou City, China

Water ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 623 ◽  
Author(s):  
Zhengzhao Li ◽  
Mingjing Dong ◽  
Tony Wong ◽  
Jianbin Wang ◽  
Alagarasan Kumar ◽  
...  
Keyword(s):  
Water Quality ◽  
Flood Control ◽  
Water Security ◽  
Utilization Efficiency ◽  
Sustainable Urban Development ◽  
City Development ◽  
Lake Water Quality ◽  
Local Conditions ◽  
Sponge City ◽  
The City

This paper presents a framework of objectives and indexes for sponge cities implementation in China. The proposed objectives and indexes aims to reflect whether the city is in accord with the sponge city. Different cities have different objectives and indexes as each city has its own geologic and hydrogeological conditions. Therefore, the main problems (e.g., water security and flood risks) in the central urban area of Changzhou city, China were evaluated scientifically. According to the local conditions, four objectives and eleven indexes have been made as a standard to estimate the sponge city and set a goal for the city development to reach the goal of sustainable urban development. The strategy of process control was implemented to improve the standard of urban drainage and flood control facilities, regulate total runoff and reduce storm peak flow, and the ecological monitoring of the function of the rivers and lakes. The objectives of sponge cities include water security, water quality improvement, healthy water ecosystems, and water utilization efficiency. Urban flood prevention capacity, river and lake water quality compliance, and annual runoff control are the key objectives to encourage the use of non-conventional water resources.

scholarly journals Research on Water Environment Regulation of Artificial Playground Lake Interconnected Yangtze River

2018 ◽  
Vol 15 (10) ◽  
pp. 2110 ◽  
Author(s):  
Weiwei Song ◽  
Xingqian Fu ◽  
Yong Pang ◽  
Dahao Song ◽  
Qing Xu ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Yangtze River ◽  
Flood Control ◽  
Numerical Models ◽  
Rapid Development ◽  
Control Level ◽  
Water Environment ◽  
Water Diversion ◽  
Coupled Models

With the rapid development of China, water pollution is still a serious problem despite implementation of control measures. Reasonable water environment management measures are very important for improving water quality and controlling eutrophication. In this study, the coupled models of hydrodynamics, water quality, and eutrophication were used to predict artificial Playground Lake water quality in the Zhenjiang, China. Recommended “unilateral” and “bilateral” river numerical models were constructed to simulate the water quality in the Playground Lake without or with water diversion by pump, sluice and push pump. Under “unilateral” and “bilateral” river layouts, total nitrogen and total phosphorus meet the landscape water requirement through water diversion. Tourist season in spring and summer and its suitable temperature result in heavier eutrophication, while winter is lighter. Under pumping condition, water quality and eutrophication of “unilateral” river is better than “bilateral” rivers. Under sluice diversion, the central landscape lake of “unilateral river” is not smooth, and water quality and eutrophication is inferior to the “bilateral”. When the water level exceeds the flood control level (4.1 m), priority 1 is launched to discharge water from the Playground Lake. During operation of playground, when water level is less than the minimum level (3.3 m), priority 2 is turned on for pumping diversion or sluice diversion to Playground Lake. After opening the Yangtze river diversion channel sluice, priority 3 is launched for sluice diversion to the Playground Lake. When the temperature is less than 15 °C, from 15 °C to 25 °C and higher than 25 °C, the water quality can be maintained for 15 days, 10 days and 7 days, respectively. Corresponding to the conditions of different priority levels, reasonable choices of scheduling measures under different conditions to improve the water quality and control eutrophication of the Playground Lake. This article is relevant for the environmental management of the artificial Playground Lake, and similar lakes elsewhere.

The Perceived State of Water Security in the Sekhukhune District Municipality and the eThekwini Metropolitan Municipality

2018 ◽  
pp. 73-134 ◽  
Author(s):  
Richard Meissner ◽  
Maronel Steyn ◽  
Inga Jacobs-Mata ◽  
Elliot Moyo ◽  
Justinus Shadung ◽  
...  
Keyword(s):  
Water Security ◽  
State Of Water
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