scholarly journals Investigating Hydrological Variability in the Wuding River Basin: Implications for Water Resources Management under the Water–Human-Coupled Environment

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 184
Author(s):  
Chiheng Dang ◽  
Hongbo Zhang ◽  
Vijay P. Singh ◽  
Yinghao Yu ◽  
Shuting Shao

Understanding and quantifying changes in hydrological systems due to human interference are critical for the implementation of adaptive management of global water resources in the changing environment. To explore the implications of hydrological variations for water resources management, the Wuding River Basin (WRB) in the Loess Plateau, China, was selected as a case study. Based on the Budyko-type equation with a time-varying parameter n, a human-induced water–energy balance (HWEB) model was proposed to investigate the hydrological variability in the WRB. The investigation showed that runoff continuously reduced by 0.424 mm/a during 1975–2010, with weakly reducing precipitation and increasing groundwater exploitation causing a decrease in groundwater storage at a rate of 1.07 mm/a, and actual evapotranspiration accounting for more than 90% of precipitation having an insignificantly decreasing trend with a rate of 0.53 mm/a under climate change (decrease) and human impact (increase). Attribution analysis indicated that human-induced underlying surface condition change played a dominant role in runoff reduction by driving an increase in actual evapotranspiration, and that mainly impacted the overall decrease in runoff compounded by climate change during the entire period. It is suggested that reducing the watershed evapotranspiration and controlling groundwater exploitation should receive greater attention in future basin management.

2012 ◽  
Vol 19 (1) ◽  
pp. 107-120 ◽  
Author(s):  
Wang Xiao-jun ◽  
Zhang Jian-yun ◽  
Wang Jian-hua ◽  
He Rui-min ◽  
Amgad ElMahdi ◽  
...  

2021 ◽  
pp. 49-55
Author(s):  
Balzhan Amanbaeva ◽  
Ermekkul Zhaparkulova ◽  
Mustafa Mustafayev ◽  
Josef Mosiej

The article presents the method of water resources management in the Asa river basin and indicators of water intake, water supply and assessment of water quality. Water is an economically important resource that determines the sustainability of a country’s development. New trends show that water issues are becoming more complex with other sectors, including agriculture, energy, industry, transport, and communications, as well as with social sectors: education, environment, and healthcare, rural or regional development. The rational use of water resources, as well as the protection of water resources and access to drinking water are an important priority for the world community. The Republic of Kazakhstan is no exception, since the deficit of water resources is growing every year. Today’s global challenges, especially climate change and population growth, are making the situation even more worrisome. Climate change is caused by dynamic processes on Earth, external influences such as fluctuations in the intensity of sunlight, and recent human activities. Consequently, in the conditions of Kazakhstan, where water resources are limited, and irrigation develops in various natural and climatic zones, further intensification of irrigated agriculture can be carried out through the development of environmentally friendly integrated technologies, ecological and reclamation management of water and land resources, ensuring a decrease in the amount of unproductive losses of irrigation water, as well as protection of water and land resources from pollution by collector-waste waters, leaching of organic substances and nutrients, the rate of salt accumulation in the root layer and the rate of alkalization and alkalinization processes. This approach is predetermined by the fact that the existing methods of water resources management inevitably lead to large losses of irrigation water for infiltration, discharge and evaporation, the value of which reaches 60–70% of the water intake.


2018 ◽  
Vol 246 ◽  
pp. 01018
Author(s):  
Zhiming Liu ◽  
Yongqiang Wang ◽  
Jin Chen ◽  
Jijun Xu ◽  
Shaokun He

River flows would be influenced greatly by climate change, which may cause further stress on water resources management by altering the quantity and distribution of runoff. In this paper, taking the Hanjiang River basin for instance, projections of precipitation and temperature are generated from two GCMs under RCP8.5 scenario, an extreme condition. Then the outputs are statistically downscaled and corrected by the daily bias correction method, a hybrid method of combining the daily translation and the local intensity scaling method. The VIC distributed hydrological model is used for the runoff simulation. Results show that the projections of two GCMs consistent with each other. There is a general increase in the annual mean precipitation and temperature in the Hanjiang River Basin in the future period (2021-2099), and the annual mean runoff of the Danjiangkou reservoir increases significantly compared with historical period (1980-2010). However, the annual runoff variability would increase the flood control pressure in wet season, aggravate the conflict between power generation and water supply in dry season despite increasing the water supply capacity in storage season.


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