Conjunctive water management options: examples from economic assessment of system-level water savings through Liuyuankou Irrigation System, China

Khan, Shahbaz and Mushtaq, Shahbaz and Luo, Yufeng and Dawe, David and Hafeez, Mohsin and Rana, Tariq (2007) Conjunctive water management options: examples from economic assessment of system-level water savings through Liuyuankou Irrigation System, China. Irrigation and Drainage, 56. pp. 523-539. ISSN 1531-0353

Abstract

The paper provides results of a study aimed at saving a substantial amount of water by maintaining deeper groundwater levels to prevent fallow evaporation and by reducing the cost of groundwater abstraction for lowland farmers. An integrated LIS economic appraisal model was developed that linked simulated response of hydrological modelling of different conjunctive management options with economic analysis. The simulation results of the LIS system dynamic model show that a combination of canal lining and pumping groundwater is the most cost-effective way to reduce non-beneficial evapotranspiration and increase water availability by saving up to 68 MCM of water. The simulation results of economic parameters indicated that canal lining and pumping also offer highest net economic benefits (¥21.98 million). Among other options, canal lining also indicates reasonably high net economic benefits (¥9.02 million). The model indicates a small increase in marginal value of water with canal lining (¥1.53m 3) and pumping and canal lining (¥1.62m 3). Among other options, the marginal capital cost of water saving for pumping and canal lining together was the lowest (¥0.096m 3). However, the marginal capital cost of water saving for pumping and shifting canal water downstream was the most expensive (¥1.046m 3).


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version not held.
Depositing User: Dr Shahbaz Mushtaq
Faculty / Department / School: Current - USQ Other
Date Deposited: 22 Apr 2010 10:43
Last Modified: 02 Jul 2013 23:47
Uncontrolled Keywords: system-level water saving; system dynamic model; production and profit functions; China
Fields of Research (FOR2008): 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070108 Sustainable Agricultural Development
14 Economics > 1402 Applied Economics > 140205 Environment and Resource Economics
Socio-Economic Objective (SEO2008): B Economic Development > 91 Economic Framework > 9199 Other Economic Framework > 919999 Economic Framework not elsewhere classified
D Environment > 96 Environment > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified
D Environment > 96 Environment > 9605 Ecosystem Assessment and Management > 960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments
Identification Number or DOI: doi: 10.1002/ird.321
URI: http://eprints.usq.edu.au/id/eprint/7503

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