Simulation Study on the Different Policies of Jiangsu Province for a Dynamic Balance of Water Resources under the Water–Energy–Food Nexus

In order to promote the efficient use of resources and the sustainable development of the economy in Jiangsu Province, it is particularly important to ease the contradiction between water supply and demand on the basis of realizing the coordinated development of the water–energy–food (WEF) nexus. With the aim of a dynamic balance of water resources, this paper used system dynamics (SD) to build a WEF nexus SD model that focused on studying the specific supply-and-demand mechanism of water resources in each subsystem. Then, Jiangsu Province was taken as an example to perform simulation research on the regional water dynamic balance to explore effective policies for increasing water supply and decreasing water demand. The results showed that the imbalance of water resources will remain severe in the next few years. To relieve the imbalance, it will be helpful to promote the energy utilization of straw, improve the irrigation efficiency, adjust the crop planting structure, and require residents to strictly follow the water quota. An important advancement in this study is the simulation of the water resources supply-and-demand mechanism in each subsystem from the perspective of the WEF nexus.

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The gap of water supply—Demand and its driving factors: From water footprint view in Huaihe River Basin

PLoS ONE ◽

10.1371/journal.pone.0247604 ◽

2021 ◽

Vol 16 (3) ◽

pp. e0247604

Author(s):

Min An ◽

Lijuan Fan ◽

Jin Huang ◽

Wenjing Yang ◽

Hailin Wu ◽

...

Keyword(s):

Water Resources ◽

Water Supply ◽

River Basin ◽

Optimal Allocation ◽

Water Footprint ◽

Supply And Demand ◽

Jiangsu Province ◽

Driving Factors ◽

Huaihe River Basin ◽

Huaihe River

Climate change, population growth, the development of industrialization and urbanization are increasing the demand for water resources, but the water pollution is reducing the limited water supply. In recent years, the gap between water supply and demand which shows water scarcity situation is becoming more serious. Clear knowing this gap and its main driving factors could help us to put forward water protection measures correctly. We take the data of Huaihe River Basin from 2001 to 2016 as an example and use ecological water footprint to describe the demand, with the water carrying capacity representing the supply. We analyze the water supply-demand situation of Huaihe River Basin and its five provinces from footprint view in time and space. Then we apply the Logarithmic Mean Divisia Index model to analyze the driving factors of the ecological water footprint. The results show that: (1) the supply and demand balance of Huaihe River Basin was only achieved in year 2003 and 2005. There is also a large difference between Jiangsu province and other provinces in Huaihe River basin, most years in Jiangsu province per capital ecological footprint of water is more than 1 hm2/person except the years of 2003, 2015, and 2016. But other provinces are all less than 1 hm2/person. (2) Through the decomposition of water demand drivers, we concluded that economic development is the most important factor, with an annual contribution of more than 60%. Our study provides countermeasures and suggestions for the management and optimal allocation of water resources in Huaihe River Basin, and also provides reference for the formulation of water-saving policies in the world.

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Study on the streamflow compensation characteristics of reservoirs in Luanhe River Basin based on Copula function

Water Science & Technology Water Supply ◽

10.2166/ws.2021.380 ◽

2021 ◽

Author(s):

Fang Wan ◽

Lingfeng Xiao ◽

Qihui Chai ◽

Li Li

Keyword(s):

Water Resources ◽

Water Supply ◽

River Basin ◽

Rapid Development ◽

Supply And Demand ◽

Copula Function ◽

Efficient Utilization ◽

Mutual Compensation ◽

Luanhe River Basin ◽

Yuqiao Reservoir

Abstract With the rapid development of economy and society, the contradiction between supply and demand of water resources is increasing. Efficient utilization and allocation of limited water resources are one of the main means to solve the above contradictions. In this paper, the multidimensional joint distribution of natural streamflow series in reservoirs is constructed by introducing the mixed Copula function, and the probability of wet and dry encounters between natural streamflow is analyzed. Luan River is located in the northeastern part of Hebei Province, China, taking the group of Panjiakou Reservoir, Douhe Reservoir and Yuqiao Reservoir in the downstream of Luan River Basin as an example, the probabilities of synchronous and asynchronous abundance and depletion of inflow from the reservoirs are calculated. The results show that the probability of natural streamflow series between reservoirs is 61.14% for wetness and dryness asynchronous, which has certain mutual compensation ability. Therefore, it is necessary to minimize the risk of water supply security in Tianjin, Tangshan and other cities, and strengthen the optimal joint water supply scheduling of reservoirs. The research results are reasonable and reliable, which can provide reference for water supply operation of other basins.

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Dynamic Model of a Sustainable Water Resources Utilization System with Coupled Water Quality and Quantity in Tianjin City

Sustainability ◽

10.3390/su12104254 ◽

2020 ◽

Vol 12 (10) ◽

pp. 4254

Author(s):

Yutong Tian ◽

Chunhui Li ◽

Yujun Yi ◽

Xuan Wang ◽

Anping Shu

Keyword(s):

Water Quality ◽

Water Resources ◽

Water Supply ◽

Supply And Demand ◽

Sustainable Use ◽

Social Economy ◽

Using Data ◽

Water Quality And Quantity ◽

Sustainable Water Resources ◽

Water Resources Utilization

With the development of industrial and agricultural production and the social economy, the demand for water resources has gradually increased. In this paper, based on the principles of system dynamics, a sustainable water resources utilization model with coupled water quality and quantity is established using STELLA software to assess the sustainable use of water resources. The model includes two modules: a water supply module and a water quality module. The water supply module includes four sub-systems: economy, population, water supply, and water demand. The water quality module consists of an environmental sub-system. The model is suitable for Tianjin, where water resources are scarce. Calibration is performed using data from 2013–2016, and verification is performed using data from 2017. The simulation results are good. In order to compare the sustainable use of water resources in different development scenarios in Tianjin for 2025, a sensitivity analysis is performed for each variable, and four decision variables are selected to establish four water resources use scenarios (Scenarios 1–4). The results show that, compared with scenario 1, water shortages in scenarios 2 and 3 are delayed. Scenario 4, with stable economic growth and environmental consideration, can effectively resolve the contradiction between water supply and demand in the future, and is more conducive to the improvement of water quality. Finally, based on the above research, measures to solve water resources problems are proposed, in order to provide a reference for the sustainable use of water resources and optimization of water resources allocation in Tianjin.

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Simulation of Water Resources Carrying Capacity in Xiong’an New Area Based on System Dynamics Model

Water ◽

10.3390/w11051085 ◽

2019 ◽

Vol 11 (5) ◽

pp. 1085 ◽

Cited By ~ 2

Author(s):

Boyang Sun ◽

Xiaohua Yang

Keyword(s):

Water Resources ◽

Water Supply ◽

System Dynamics ◽

Carrying Capacity ◽

Environmental Governance ◽

Supply And Demand ◽

Groundwater Overdraft ◽

Water Resources Carrying Capacity ◽

Water Supply And Demand ◽

Regional Water

In order to comprehensively evaluate the water resources carrying capacity in Xiong’an New Area, a system dynamics (SD) model was established to evaluate the regional water resources carrying capacity, for which several scenarios were designed: the original development scenario, the accelerated industrialization scenario, the environmental governance scenario, and the optimization development scenario. The results show that, compared with the original development scenario, the water resources carrying capacity in Xiong’an New Area can be improved in other scenarios, but a water supply and demand gap will be generated due to the lack of groundwater overdraft and a water transfer project. In 2026, under the accelerated industrialization scenario, the population carrying capacity will be 2.652 million, and the water supply and demand gap will be 1.13 × 108 m3; under the environmental governance scenario, the population carrying capacity will be 2.36 million, and the water supply and demand gap will be 0.44 × 108 m3; under the optimal development scenario, the population carrying capacity will be 2.654 million, and since the supply of water resources will be greater than the demand, there will not be a gap between supply and demand, making it the most feasible scenario to effectively alleviate the tension between industry restructuring, environmental management, and water resources development and utilization. The findings of this study can provide reference and decision support for optimizing regional water resources allocation and enhancing water resources carrying capacity in Xiong’an New Area.

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A study of multi-objective dynamic water resources allocation modeling of Huai River

Water Science & Technology Water Supply ◽

10.2166/ws.2015.037 ◽

2015 ◽

Vol 15 (4) ◽

pp. 817-824 ◽

Cited By ~ 3

Author(s):

Jing Peng ◽

Ximin Yuan ◽

Lan Qi ◽

Qiliang Li

Keyword(s):

Water Resources ◽

Dynamic Balance ◽

Supply And Demand ◽

Low Flow ◽

Resources Allocation ◽

Time Interval ◽

Water Resources Allocation ◽

Allocation Model ◽

Multi Objective ◽

Huai River

Water resources supply and demand has become a serious problem. Water resources allocation is usually a multi-objective problem, and has been of concern for many researchers. In the north of China, the lack of water resources in the Huai River Basin has handicapped the development of the economy, especially badly in the low-flow period. So it is necessary to study water resources allocation in this area. In this paper, a multi-objective dynamic water resources allocation model has been developed. The developed model took the overall satisfaction of water users in a time interval as the objective function, applied an improved simplex method to solve the calculation, considered the overall users' satisfaction variation with time, and followed the principle that the variation of the system satisfaction within adjacent periods of time must be minimal. The established model was then applied to the Huai River, for the present situation (2010), short-term (2020) and long-term (2030) planning timeframes. From the calculation results, the overall satisfaction in late May and mid September in 2030 was 0.65 and 0.70. After using the model allocation optimization, the overall satisfaction was improved, increasing to 0.78 and 0.79, respectively, thus achieving the dynamic balance optimization of water resources allocation in time and space. This model can provide useful decision support in water resources allocation, when it is used to alleviate water shortages occurring in the low-flow period.

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Analysis on Water Resources Supply and Demand Balance of Rural Land Remediation Project in Baishan City, Jilin Province

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.295-298.2132 ◽

2013 ◽

Vol 295-298 ◽

pp. 2132-2137

Author(s):

Xiao Ling Xu ◽

Xu Feng Liang ◽

Xiu Juan Liang ◽

Chang Lai Xiao

Keyword(s):

Water Resources ◽

Water Supply ◽

Water Availability ◽

Water Demand ◽

Influence Factor ◽

Supply And Demand ◽

Rural Land ◽

Project Area ◽

Groundwater Availability ◽

Relevant Calculation

Water resources are an important influence factor of land remediation. As support of food production, analysis of water resources supply and demand balance is an important part and technical support of the construction. According to some relevant calculation formulas on water resources assessment, after forecast of water demand and the calculation of water supply, in the project area of the demonstration construction of whole rural land remediation in Baishan City, the average water availability for many years is 8990.1 thousand m3 each year, in which surface water availability is 7210.6 thousand m3, groundwater availability is 1579.4 thousand m3. Water demand is 5552.4 thousand m3 in 2015, in which water demand for life 4165.2 thousand m3; water demand for agricultural irrigation is 1387.2 thousand m3. Water supply is more than water demand; the results show that there is a slight surplus of water resources in the region. The basic supply-demand balance can be achieved in conditions of the design of water supply project in the project area.

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Research of Energy Utilization Policies from Restaurant Kitchen Refuse

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.848.338 ◽

2013 ◽

Vol 848 ◽

pp. 338-341

Author(s):

Yuan Bo Wang ◽

Kai Li Chen

Keyword(s):

Energy Production ◽

Great Part ◽

Clean Energy ◽

Municipal Waste ◽

Energy Utilization ◽

Research Progress ◽

Coordinated Development ◽

Use Of Resources ◽

Recycling Economy

Restaurant kitchen refuse is usually discharged from families, schools, dining rooms and restaurants. A great part of municipal waste is kitchen garbage. Using to restaurant kitchen refuse produce energy could not only decrease pollution and obtain clean energy, but also develop recycling economy with most efficient use of resources and minimal contamination of the environment. Treatment of restaurant kitchen refuses and research progress of energy production from restaurant kitchen refuse are reviewed. Production of biodiesel and methane from restaurant kitchen refuse is introduced. This paper presents related policies and suggestions to develop energy production from restaurant kitchen refuse, so as to push ahead with coordinated development of the economy and environment.

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Correlation between Grain Production and the Water Supply in Yunnan

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.501-504.1977 ◽

2014 ◽

Vol 501-504 ◽

pp. 1977-1980

Author(s):

Jian Xiong Wang ◽

Pan Li

Keyword(s):

Water Resources ◽

Water Supply ◽

Water Conservation ◽

Food Production ◽

Supply And Demand ◽

Grain Production ◽

Agricultural Water ◽

Regional Food ◽

Agricultural Water Use ◽

Stable Yield

In recent years in yunnan province grain production increase in volatility,The high and stable yield of grain without good irrigation. Agriculture is water conservation, Industrial and agricultural water use ratio is about 1:4 in China, the main contradiction of supply and demand of water resources in agriculture.Due to other reasons, agricultural water supply reliability will be further reduced.In the case of agricultural water situation has deteriorated, in order to ensure and enlarge the scale of regional food production,urgently needs to research and develop to solve the contradictory between food production and supply of water resources in this area.

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