scholarly journals Water Productivity Mapping (WPM) Using Landsat ETM+ Data for the Irrigated Croplands of the Syrdarya River Basin in Central Asia

Sensors ◽  
2008 ◽  
Vol 8 (12) ◽  
pp. 8156-8180 ◽  
Author(s):  
Alexander Platonov ◽  
Prasad Thenkabail ◽  
Chandrashekhar Biradar ◽  
Xueliang Cai ◽  
Muralikrishna Gumma ◽  
...  
Keyword(s):  
Central Asia ◽  
River Basin ◽  
Water Productivity

scholarly journals Quantitative evaluation of the rainfall influence on streamflow in an inland mountainous river basin within Central Asia

2017 ◽  
Vol 63 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Congjian Sun ◽  
Yanjun Shen ◽  
Yaning Chen ◽  
Wei Chen ◽  
Weibo Liu ◽  
...  
Keyword(s):  
Central Asia ◽  
River Basin ◽  
Quantitative Evaluation ◽  
Mountainous River

scholarly journals Human and Natural Impacts on the Water Resources in the Syr Darya River Basin, Central Asia

2019 ◽  
Vol 11 (11) ◽  
pp. 3084 ◽  
Author(s):  
Shan Zou ◽  
Abuduwaili Jilili ◽  
Weili Duan ◽  
Philippe Maeyer ◽  
Tim de Voorde
Keyword(s):  
Water Resources ◽  
Central Asia ◽  
River Basin ◽  
River Discharge ◽  
Water Resource Management ◽  
Agricultural Land ◽  
Sharp Decline ◽  
Essential Information ◽  
Effective Water ◽  
Syr Darya

Water resources are increasingly under stress in Central Asia because downstream countries are highly dependent on upstream countries. Water is essential for irrigation and is becoming scarcer due to climate change and human activities. Based on 20 hydrological stations, this study firstly analyzed the annual and seasonal spatial–temporal changes of the river discharges, precipitation, and temperature in the Syr Darya River Basin and then the possible relationships between these factors were detected. Finally, the potential reasons for the river discharge variations have been discussed. The results show that the river discharges in the upper stream of the basin had significantly risen from 1930 to 2006, mainly due to the increase in temperature (approximately 0.3 °C per decade), which accelerated the melting of glaciers, while it decreased in the middle and lower regions due to the rising irrigation. In the middle of the basin, the expansion of the construction land (128.83 km2/year) and agricultural land (66.68 km2/year) from 1992 to 2015 has significantly augmented the water consumption. The operations of reservoirs and irrigation canals significantly intercepted the river discharge from the upper streams, causing a sharp decline in the river discharges in the middle and lower reaches of the Syr Darya River in 1973. The outcomes obtained from this study allowed us to understand the changes in the river discharges and provided essential information for effective water resource management in the Syr Darya River Basin.

scholarly journals Water Productivity Evaluation under Multi-GCM Projections of Climate Change in Oases of the Heihe River Basin, Northwest China

2019 ◽  
Vol 16 (10) ◽  
pp. 1706 ◽  
Author(s):  
Liu Liu ◽  
Zezhong Guo ◽  
Guanhua Huang ◽  
Ruotong Wang
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
River Basin ◽  
Water Productivity ◽  
Northwest China ◽  
Hexi Corridor ◽  
Heihe River Basin ◽  
Heihe River ◽  
Crop Water ◽  
The Heihe River Basin

As the second largest inland river basin situated in the middle of the Hexi Corridor, Northwest China, the Heihe River basin (HRB) has been facing a severe water shortage problem, which seriously restricts its green and sustainable development. The evaluation of climate change impact on water productivity inferred by crop yield and actual evapotranspiration is of significant importance for water-saving in agricultural regions. In this study, the multi-model projections of climate change under the three Representative Concentration Pathways emission scenarios (RCP2.6, RCP4.5, RCP8.5) were used to drive an agro-hydrological model to evaluate the crop water productivity in the middle irrigated oases of the HRB from 2021–2050. Compared with the water productivity simulation based on field experiments during 2012–2015, the projected water productivity in the two typical agricultural areas (Gaotai and Ganzhou) both exhibited an increasing trend in the future 30 years, which was mainly attributed to the significant decrease of the crop water consumption. The water productivity in the Gaotai area under the three RCP scenarios during 2021–2050 increased by 9.2%, 14.3%, and 11.8%, while the water productivity increased by 15.4%, 21.6%, and 19.9% in the Ganzhou area, respectively. The findings can provide useful information on the Hexi Corridor and the Belt and Road to policy-makers and stakeholders for sustainable development of the water-ecosystem-economy system.

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