scholarly journals Glacial Change and Its Hydrological Response in Three Inland River Basins in the Qilian Mountains, Western China

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2213
Author(s):  
Guohua Liu ◽  
Rensheng Chen ◽  
Kailu Li
Keyword(s):  
River Basin ◽  
Water Resource ◽  
Water Resource Management ◽  
Large Scale ◽  
Water Security ◽  
River Basins ◽  
Western China ◽  
Heihe River ◽  
Glacial Meltwater ◽  
Inland River

Glacial changes have great effects on regional water security because they are an important component of glacierized basin runoff. However, these impacts have not yet been integrated and evaluated in the arid/semiarid inland river basins of western China. Based on the degree-day glacier model, glacier changes and their hydrologic effects were studied in 12 subbasins in the Shiyang River basin (SYRB), Heihe River basin (HHRB) and Shule River basin (SLRB). The results showed that the glacier area of each subbasin decreased by 16.7–61.7% from 1965 to 2020. By the end of this century, the glacier areas in the three basins will be reduced by 64.4%, 72.0% and 83.4% under the three climate scenarios, and subbasin glaciers will disappear completely after the 2070s even under RCP2.6. Glacial runoff in all subbasins showed a decreasing–increasing–decreasing trend, with peak runoff experienced in 11 subbasins during 1965~2020. The contribution of glacial meltwater to total runoff in the basin ranged from 1.3% to 46.8% in the past, and it will decrease in the future due to increasing precipitation and decreasing glacial meltwater. However, the scale differences in glacier runoff are significant when aggregated over the region/basin/subbasin. This suggests that the results of large-scale generalization may be misleading for subbasin glacier water resource evaluations. Therefore, the hydrological effects of glaciers should be studied more in subbasins to provide an accurate reference for practical water resource management.

Water Poverty Index in the Inland River Basins of Hexi Corridor, Gansu Province

2013 ◽  
Vol 864-867 ◽  
pp. 2371-2375 ◽  
Author(s):  
Yan Hui Pan ◽  
Chun Jie Gu ◽  
Jin Zhu Ma ◽  
Tian Shu Zhang ◽  
Hui Zhang
Keyword(s):  
River Basin ◽  
Water Resource Management ◽  
Water Security ◽  
River Basins ◽  
Gansu Province ◽  
Evaluation Framework ◽  
Poverty Index ◽  
Inland River ◽  
Water Poverty Index ◽  
Basin Scale

Since the economic development and environment deteriorating, water security has become an increasingly serious problem in the world. A number of regions are suffering water scarcity and pollution. The Water Poverty Index (WPI) could provide a standardized evaluation framework for the utilization and development of water resources in a certain region. This article based on the calculation of WPI, analyzed the components of WPI at basin scale, and calculated the WPI at Shule river basin, Shiyang river basin and Heihe River Basin, thereby, identified the water security and find out the main problems of water resource management and utilization in the three inland river basins in Gansu corridor.

scholarly journals Assessment of spatial and temporal patterns of green and blue water flows under natural conditions in inland river basins in Northwest China

2012 ◽  
Vol 16 (8) ◽  
pp. 2859-2870 ◽  
Author(s):  
C. F. Zang ◽  
J. Liu ◽  
M. van der Velde ◽  
F. Kraxner
Keyword(s):  
River Basin ◽  
River Basins ◽  
Heihe River Basin ◽  
Green Water ◽  
Heihe River ◽  
Blue Water ◽  
Natural Conditions ◽  
Water Flows ◽  
Inland River ◽  
Green And Blue Water

Abstract. In arid and semi-arid regions freshwater resources have become scarcer with increasing demands from socio-economic development and population growth. Until recently, water research and management has mainly focused on blue water but ignored green water. Furthermore, in data poor regions hydrological flows under natural conditions are poorly characterised but are a prerequisite to inform future water resources management. Here we report on spatial and temporal patterns of both blue and green water flows that can be expected under natural conditions as simulated by the Soil and Water Assessment Tool (SWAT) for the Heihe river basin, the second largest inland river basin in Northwest China. Calibration and validation at two hydrological stations show good performance of the SWAT model in modelling hydrological processes. The total green and blue water flows were 22.05–25.51 billion m3 in the 2000s for the Heihe river basin. Blue water flows are larger in upstream sub-basins than in downstream sub-basins mainly due to high precipitation and a large amount of snow and melting water in upstream. Green water flows are distributed more homogeneously among different sub-basins. The green water coefficient was 87%–89% in the 2000s for the entire river basin, varying from around 80%–90% in up- and mid-stream sub-basins to above 90% in downstream sub-basins. This is much higher than reported green water coefficients in many other river basins. The spatial patterns of green water coefficients were closely linked to dominant land covers (e.g. snow cover upstream and desert downstream) and climate conditions (e.g. high precipitation upstream and low precipitation downstream). There are no clear consistent historical trends of change in green and blue water flows and the green water coefficient at both the river basin and sub-basin levels. This study provides insights into green and blue water endowments under natural conditions for the entire Heihe river basin at the sub-basin level. The results are helpful to benchmark the natural flows of water in the basin as part of improved water resources management in the inland river basins of China.

scholarly journals Identification of Water Scarcity and Providing Solutions for Adapting to Climate Changes in the Heihe River Basin of China

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Xiangzheng Deng ◽  
Chunhong Zhao
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Water Resource ◽  
Water Scarcity ◽  
Water Resource Management ◽  
Optimal Allocation ◽  
Water Productivity ◽  
Heihe River Basin ◽  
Heihe River ◽  
The Heihe River Basin

In ecologically fragile areas with arid climate, such as the Heihe River Basin in northwestern China, sustainable social and economic development depends largely on the availability and sustainable uses of water resource. However, there is more and more serious water resource shortage and decrease of water productivity in Heihe River Basin under the influence of climate change and human activities. This paper attempts to identify the severe water scarcity under climate change and presents possible solutions for sustainable development in Heihe River Basin. Three problems that intervened land use changes, water resource, the relevant policies and institutions in Heihe River basin were identified, including (1) water scarcity along with serious contradiction between water supply and demand, (2) irrational water consumption structure along with low efficiency, and (3) deficient systems and institutions of water resource management along with unreasonable water allocation scheme. In this sense, we focused on reviewing the state of knowledge, institutions, and successful practices to cope with water scarcity at a regional extent. Possible solutions for dealing with water scarcity are explored and presented from three perspectives: (1) scientific researches needed by scientists, (2) management and institution formulation needed by governments, and (3) water resource optimal allocation by the manager at all administrative levels.

scholarly journals Integrated study of the water–ecosystem–economy in the Heihe River Basin

2014 ◽  
Vol 1 (3) ◽  
pp. 413-428 ◽  
Author(s):  
Guodong Cheng ◽  
Xin Li ◽  
Wenzhi Zhao ◽  
Zhongmin Xu ◽  
Qi Feng ◽  
...  
Keyword(s):  
River Basin ◽  
Management Practices ◽  
River Basins ◽  
River Basin Management ◽  
Heihe River Basin ◽  
Water Diversion ◽  
Heihe River ◽  
Inland River ◽  
Water Ecosystem ◽  
The Heihe River Basin

AbstractThe ecological water diversion project in the Heihe River Basin is the first successful case in China in which the ecological systems in a river basin have been rescued. This project serves as a valuable example for the management of ecosystems in other inland river basins. This paper reviews the integrated studies of the water–ecosystem–economy relationship in the Heihe River Basin and concludes that sustainable development in inland river basins requires the basin to be considered as a whole, with the relationships between the upstream, midstream and downstream areas of the basin coordinated appropriately. Successful development in these basins will be reflected in an improved output per cubic meter of water and the implementation of integrated river basin management practices.

scholarly journals Hydrological calibration and validation of the MGB-IPH model for water resource management in the upper Teles Pires River basin in the Amazon-Cerrado ecotone in Brazil

2019 ◽  
Vol 49 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Riene Filgueiras de OLIVEIRA ◽  
Cornélio Alberto ZOLIN ◽  
Daniel de Castro VICTORIA ◽  
Tarcio Rocha LOPES ◽  
Laurimar Gonçalves VENDRUSCULO ◽  
...  
Keyword(s):  
Resource Management ◽  
River Basin ◽  
Water Resource ◽  
Water Resource Management ◽  
Large Scale ◽  
Model Performance ◽  
Resource Assessment ◽  
Distributed Hydrological Model ◽  
Statistical Parameters ◽  
Mato Grosso

ABSTRACT The upper Teles Pires River basin is located in the Brazilian agriculture frontier in the north of Mato Grosso state and has experienced significant changes in land use and cover, which can cause major changes in its hydrological dynamics. Climatic and hydrologic data are scarce in the region, which poses uncertainties in the decision-making process aiming at the sustainable management of water resources in this strategic area. The aim of this study was to evaluate the performance of the Large-Scale Distributed Hydrological Model (MGB-IPH) to assess water availability of the upper Teles Pires basin and support water resource management in the Amazon-Cerrado ecotone. The MGB-IPH model was calibrated and validated using data from three streamflow stations available in the basin. In order to verify the model performance, the Nash-Sutcliffe (NS) and the PBIAS statistical parameters were applied. Our results show that, by using the MGB-IPH model with generally available data, the maximum and minimum flow regimes can be successfully assessed in the upper Teles Pires basin. The continuity curves of daily flow simulated by the model showed a good fit with the observed flow. Overall, the results demonstrated the applicability of the MGB-IPH model for water resource assessment and management in the basin.

scholarly journals Assessment of spatial and temporal patterns of green and blue water flows in inland river basins in Northwest China

2012 ◽  
Vol 9 (3) ◽  
pp. 3311-3338 ◽  
Author(s):  
C. F. Zang ◽  
J. Liu ◽  
M. van der Velde ◽  
F. Kraxner
Keyword(s):  
River Basin ◽  
River Basins ◽  
Heihe River Basin ◽  
Green Water ◽  
Heihe River ◽  
Blue Water ◽  
Spatial And Temporal Patterns ◽  
Water Flows ◽  
Inland River ◽  
Green And Blue Water

Abstract. In arid and semi-arid regions freshwater resources have become scarcer with increasing demands from socio-economic development and population growth. Until recently, water research and management in these has mainly focused on blue water but ignored green water. Here we report on spatial and temporal patterns of both blue and green water flows simulated by the Soil and Water Assessment Tool (SWAT) for the Heihe river basin, the second largest inland river basin in Northwest China. Calibration and validation at two hydrological stations show good performance of the SWAT model in modelling hydrological processes. The total green and blue water flows were 22.09 billion m3 in the 2000s for the Heihe river basin. Blue water flows are larger in upstream sub-basins than in downstream sub-basins mainly due to high precipitation and large areas of glaciers in upstream. Green water flows are distributed more homogeneously among different sub-basins. The green water coefficient was 88.0% in the 2000s for the entire river basin, varying from around 80–90% in up- and mid-stream sub-basins to above 95% in downstream sub-basins. This is much higher than reported green water coefficient in many other river basins. The spatial patterns of green water coefficient were closely linked to dominant land covers (e.g. glaciers in upstream and desert in downstream) and climate conditions (e.g. high precipitation in upstream and low precipitation in downstream). There are no clear consistent historical trends of change in green and blue water flows and green water coefficient at both the river basin and sub-basin levels. This study provides insights into green and blue water endowments for the entire Heihe river basin at sub-basin level. The results are helpful for formulating reasonable water policies to improve water resources management in the inland river basins of China.

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