Climate changes and their impacts on water resources in semiarid regions: a case study of the Wei River basin, China

2012 ◽  
Vol 27 (26) ◽  
pp. 3852-3863 ◽  
Author(s):  
Guangju Zhao ◽  
Xingmin Mu ◽  
Peng Tian ◽  
Fei Wang ◽  
Peng Gao
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Climate Changes ◽  
Semiarid Regions ◽  
The Wei River Basin ◽  
Wei River Basin ◽  
Wei River

scholarly journals Precipitation Trends and Alteration in Wei River Basin: Implication for Water Resources Management in the Transitional Zone between Plain and Loess Plateau, China

Water ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2407
Author(s):  
Li ◽  
Zhang ◽  
Gong ◽  
Wei ◽  
Yang
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Resources Management ◽  
Loess Plateau ◽  
Critical Role ◽  
Transitional Zone ◽  
Resources Management ◽  
The Wei River Basin ◽  
Wei River Basin ◽  
Wei River

Precipitation plays a critical role in water resources management, and trend changes and alterations thereof are crucial to regional or basin water security, disaster prevention, and ecological restoration under a changing environment. In order to explore the implications of precipitation variation for water resources management, taking the Wei River Basin (a transitional zone between the Guanzhong Plain and Loess Plateau) as an example, this paper proposes an index system, namely the index of precipitation alteration (IPA), to evaluate changes in precipitation and investigate their potential influence on water resources management. The system includes 17 indicators gained from observed daily rainfall, involving some structural precipitation indicators describing the precipitation patterns and some functional precipitation indicators influencing utilization of watershed water resources. Non-parametric Mann-Kendall (MK) statistical test is employed to identify the IPA trend change, and range of variability approach is used to evaluate the variation of IPA. The analysis results in Wei River Basin show that IPA varies with different spatial and temporal distributions. Overall, although the annual total precipitation declined in the study area, the frequency of extreme events was increased during 1955–2012. In the face of severe climate change patterns, it is necessary to establish the precipitation index to evaluate the change of precipitation and to provide useful information for future precipitation assessments.

scholarly journals Simulation of blue and green water resources in the Wei River basin, China

2014 ◽  
Vol 364 ◽  
pp. 486-491 ◽  
Author(s):  
Z. Xu ◽  
D. Zuo
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Flow ◽  
Yellow River ◽  
Water Storage ◽  
Green Water ◽  
Blue Water ◽  
The Wei River Basin ◽  
Wei River Basin ◽  
Wei River

Abstract. The Wei River is the largest tributary of the Yellow River in China and it is suffering from water scarcity and water pollution. In order to quantify the amount of water resources in the study area, a hydrological modelling approach was applied by using SWAT (Soil and Water Assessment Tool), calibrated and validated with SUFI-2 (Sequential Uncertainty Fitting program) based on river discharge in the Wei River basin (WRB). Sensitivity and uncertainty analyses were also performed to improve the model performance. Water resources components of blue water flow, green water flow and green water storage were estimated at the HRU (Hydrological Response Unit) scales. Water resources in HRUs were also aggregated to sub-basins, river catchments, and then city/region scales for further analysis. The results showed that most parts of the WRB experienced a decrease in blue water resources between the 1960s and 2000s, with a minimum value in the 1990s. The decrease is particularly significant in the most southern part of the WRB (Guanzhong Plain), one of the most important grain production basements in China. Variations of green water flow and green water storage were relatively small on the spatial and temporal dimensions. This study provides strategic information for optimal utilization of water resources and planning of cultivating seasons in the Wei River basin.

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