scholarly journals The Impact of Multi-Projects on the Alteration of the Flow Regime in the Middle and Lower Course of the Hanjiang River, China

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2301
Author(s):  
Xin Yin ◽  
Jianyun Zhang ◽  
Jie Chen
Keyword(s):  
Water Resources ◽  
Flow Regime ◽  
Water Diversion ◽  
Water Resources Development ◽  
Natural Flow Regime ◽  
Cascade Reservoirs ◽  
Water Diversion Project ◽  
Natural Flow ◽  
North Water ◽  
Hanjiang River

A large number of water resources development projects have significantly changed the natural flow regime of the middle and lower reaches of the Hanjiang River, especially the Danjiangkou Reservoir, cascade reservoirs, the South-to-North Water Diversion Middle Line Project and their compensation projects, completed in 1973, 2000, and 2014, respectively. The daily streamflow data of three stations in the middle and lower mainstream of the Hanjiang River are divided into four periods corresponding to pre-impact (1954–1973), interim (1974–1999), transition (2000–2013) and post-impact (2014–2018). Eco-flow metrics and indicators of hydrologic alteration (IHA) were used to study the change of natural flow regime. The annual streamflow decreased gradually during the four periods. The construction of the Danjiangkou Reservoir increased streamflow, minimum flow value, and the number of reversals in the dry season along the middle and lower course of the Hanjiang River. Moreover, the dam reduced streamflow, maximum flow value, low pulse duration, and the rise and fall rates in the wet season. Additionally, the streamflow reduced corresponding to the completion of cascade reservoirs and the Middle Route of South-to-North Water Diversion Project. In particular, the streamflow decreased drastically from July to September, affected by the Middle Route of the South-to-North Water Diversion Project. Furthermore, the compensation projects, such as the Yangtze-Hanjiang Water Diversion Project, mitigate the reduction of streamflow from July to September in the downstream. The study provides insights into the ecological and economic benefits associated with water resources development and use in the mainstream of the middle and lower course of the Hanjiang River for the achievement of sustainable development in the region.

Beijing water resources and the south to north water diversion project

2005 ◽  
Vol 32 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Duan Wei
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Demand ◽  
Socioeconomic Development ◽  
Water Environment ◽  
Water Saving ◽  
Water Diversion ◽  
The South ◽  
Water Diversion Project ◽  
North Water

Beijing is located in a semiarid region, and water shortage is a common problem in the city. Along with the rapid increase in water demand, due to fast socioeconomic development and an increase in population, a shortage of water resources and a deterioration of the water environment have become obstacles to sustainable socioeconomic development in Beijing. In the long run, sustainable water resources management, water conservation, and completion of the south to north water diversion project will solve the problem. This paper introduces the water resources situation in Beijing; analyzes future water demand; and discusses the actions of water saving, nontraditional water resources exploitation, wetland construction, and water environment protection. The paper also explains the importance of the south to north water diversion project and the general layout of the water supply strategy, water distribution system, and methods to efficiently use the diverted water in Beijing.Key words: water resources, water supply, water saving, water recycling, water diversion.

scholarly journals China’s South-to-North Water Diversion Project Empowers Sustainable Water Resources System in the North

2019 ◽  
Vol 11 (13) ◽  
pp. 3735 ◽  
Author(s):  
Giri R. Kattel ◽  
Wenxiu Shang ◽  
Zhongjing Wang ◽  
John Langford
Keyword(s):  
Water Resources ◽  
Environmental Sustainability ◽  
Northern China ◽  
Water Diversion ◽  
Water Infrastructure ◽  
Water Shortages ◽  
Water Resources System ◽  
Goods And Services ◽  
Water Diversion Project ◽  
North Water

Global freshwaters are severely depleted. Provision of improved water infrastructure technologies and innovation can address challenges posed by water shortages to environmental sustainability. China’s South-to-North Water Diversion Project has generated extensive debates over sustainability of water resources system in the northern drier region, which faces severe water scarcity hindering ecosystems, agriculture, industries and livelihoods. Some arguments extend the views that large infrastructure projects can have negative implications for biodiversity conservation and ecosystem goods and services. However, this study strengthens the opposite view, as such projects would resolve increasing environmental challenges northern China has been facing over many decades due to severe water shortages. The project empowers connectivity among individuals, community, and organizations that the sustainability of goods and services such as energy, irrigation and water supply are perceived, and livelihoods and the standard of peoples’ living is improved. A resilient, robust and adaptive water infrastructure framework can overcome the challenges of water shortages by meeting a long term social, economic and environmental goals for water resources systems in northern China. Such framework can also identify the thresholds of change and the threats associated with environmental sustainability.

scholarly journals Drivers of spatial and temporal variability of streamflow in the Incomati River Basin

2014 ◽  
Vol 11 (7) ◽  
pp. 8879-8921
Author(s):  
A. M. L. Saraiva Okello ◽  
I. Masih ◽  
S. Uhlenbrook ◽  
G. W. P. Jewitt ◽  
P. van der Zaag ◽  
...  
Keyword(s):  
Land Use ◽  
Statistical Analysis ◽  
Water Resources ◽  
Flow Regime ◽  
Temporal Variability ◽  
Irrigated Agriculture ◽  
Spatial And Temporal Variability ◽  
Natural Flow Regime ◽  
Natural Flow

Abstract. The Incomati is a semi-arid trans-boundary river basin in southern Africa, with a high variability of streamflow and competing water demands from irrigated agriculture, energy, forestry and industries. These sectors compete with environmental flows and basic human water needs, resulting in a "stressed" water resources system. The impacts of these demands, relative to the natural flow regime, appear significant. However, despite being a relatively well-gauged basin in South Africa, the natural flow regime and its spatial and temporal variability are poorly understood and remain poorly described, resulting in a limited knowledge base for water resources planning and management decisions. Thus, there is an opportunity to improve water management, if it can be underpinned by a better scientific understanding of the drivers of streamflow availability and variability in the catchment. In this study, long-term rainfall and streamflow records were analysed. Statistical analysis, using annual anomalies, was conducted on 20 rainfall stations, for the period of 1950 to 2011. The Spearman Test was used to identify any trends in the records at annual and monthly time scales. The variability of rainfall across the basin was confirmed to be high, both intra- and inter-annually. The statistical analysis of rainfall data revealed no significant trend of increase or decrease for the studied period. Observed flow data from 33 gauges was screened and analyzed, using the Indicators of Hydrologic Alteration (IHA) approach. Long-term analyses were conducted to identify temporal/spatial variability and trends in streamflow records. Temporal variability was high, with the coefficient of variation of annual flows in the range of 1 to 3.6. Significant declining trends in October flows, and low flows indicators were also identified at most gauging stations of the Komati and Crocodile sub-catchments, however no trends were evident on the other parameters, including high flows. The trends were mapped, using GIS and were compared to historical and current land use. These results suggest that land use and flow regulation are larger drivers of temporal changes in the streamflow than climatic forces. Indeed, over the past 40 years, the areas under commercial forestry and irrigated agriculture have increased over four times.

scholarly journals Pricing Strategies for Competitive Water Supply Chains under Different Power Structures: An Application to the South-to-North Water Diversion Project in China

2018 ◽  
Vol 10 (8) ◽  
pp. 2892 ◽  
Author(s):  
Wenyi Du ◽  
Yubing Fan ◽  
Lina Yan
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Supply Chains ◽  
Water Diversion ◽  
Pricing Strategies ◽  
Power Structures ◽  
Competition Intensity ◽  
Water Diversion Project ◽  
North Water ◽  
Neutral Water

Under two different power structures, where the supplier and the distributor, respectively, are modeled as the leader, this paper studies water pricing strategies in two competing water resources supply chains. We assume that each water supply chain consists of a risk-neutral water supplier and a risk-neutral water distributor. We build different decision models for two competitive water resources supply chains, derive the optimal decision strategies for the water supply chain members, and analyze how competition intensity affects these decisions. Analytical results show that when the supplier is the leader, its water wholesale price is always higher than that when the distributor serves as the leader. On the other hand, the retail price and the two supply chains’ channel profits depend on the competition intensity, but are independent of the power structure. To illustrate the proposed models, we apply them to examine the water pricing strategies in the South-to-North Water Diversion Project in China. The results showed significant insights into the pricing strategies of water resources in different routes of this massive water diversion project.

scholarly journals An Emergency Operation Model in Upstream Pools of the Accident Pool of the Middle Route of South-to-North Water Diversion Project

2018 ◽  
Vol 246 ◽  
pp. 02007 ◽  
Author(s):  
Jin Quan ◽  
Hezhen Zheng ◽  
Siyu Cai ◽  
Yi Xu
Keyword(s):  
Water Resources ◽  
Emergency Operation ◽  
Water Diversion ◽  
Operation Model ◽  
Final State ◽  
State Of Emergency ◽  
Water Diversion Project ◽  
North Water

Considering the potential emergency accident in the Middle Route of South-to-North Water Diversion Project (MRP), previous studies required upstream pools of accident pool where accident occurs to maintain constant downstream level in the final state of emergency operation, which could cause large amount of abandoned water. In order to save water resources, an emergency operation model in upstream pools of the accident pool of the MRP was built, which allows downstream levels to rise by a certain amount in the final state, and can minimize the total abandoned water through allocating volumes in the upstream pools. This model could play an important role to determine reasonable emergency operation measures in the upstream pools.

IMPACT OF THE SOUTH-TO-NORTH WATER DIVERSION PROJECT ON GROUNDWATER RESOURCES: A CASE STUDY IN PINGGU BASIN, BEIJING, CHINA

2013 ◽  
Vol 12 (11) ◽  
pp. 2239-2247 ◽  
Author(s):  
Guomin Li ◽  
Haizhen Xu ◽  
Ming Li ◽  
Shouquan Zhang ◽  
Yanhui Dong ◽  
...  
Keyword(s):  
Groundwater Resources ◽  
Water Diversion ◽  
The South ◽  
Water Diversion Project ◽  
North Water ◽  
Beijing China
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