NDLI: Impact of Intensive Irrigation Activities on River Discharge Under Agricultural Scenarios in the Semi-Arid Aksu River Basin, Northwest China

Content Provider	Springer Nature Link
Author	Huang, Shaochun Krysava, Valentina Zhai, Jianqing Su, Buda
Copyright Year	2014
Abstract	The Aksu River is a principal headwater tributary of the Tarim River in northwest China providing 70–80 % of its water supply. This study aims to simulate the impact of potential future irrigation and cropping schemes on river discharge in the semi-arid and irrigation intensive part of the Aksu River basin. To achieve this goal, the eco-hydrological model SWIM (Soil and Water Integrated Model) was developed further by including an irrigation module and a river transmission losses module. The performance of the SWIM model in the region was then compared with that of another water management model, WEAP (Water Evaluation And Planning). The results show that both models are capable of reproducing the monthly discharge at the downstream gauge well using the local irrigation information and the observed upstream inflow discharges as inputs. Still, the SWIM model performs better than the WEAP model because it accounts for both hydrological processes and agricultural impacts. Therefore, SWIM was used for the scenario study. Different irrigation scenarios were developed based on the recent trends of agricultural practices. The study showed that the improvement of irrigation efficiency was the most effective measure for reducing irrigation water consumption and increasing river discharge downstream. The expansion of irrigation area in the basin leads to an increase in water consumption while the changes in crop structure (composition of crop types) on arable land do not have significant impact on the river discharge downstream.
Starting Page	945
Ending Page	959
Page Count	15
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	29
Issue Number	3
e-ISSN	15731650
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-11-08
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	SWIM WEAP Aksu Tarim Irrigation Hydrogeology Hydrology/Water Resources Geotechnical Engineering & Applied Earth Sciences Atmospheric Sciences Civil Engineering Environment
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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