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Downloaded from orbit.dtu.dk on: Apr 30, 2017 Addressing water challenges on the North China Plain with hydroeconomic optimization Martinsen, Grith; Davidsen, Claus; Bauer-Gottwein, Peter; Liu, Suxia; Mo, Xingguo; Jia, Shaofeng Publication date: 2016 Document Version Final published version Link to publication Citation (APA): Martinsen, G., Davidsen, C., Bauer-Gottwein, P., Liu, S., Mo, X., & Jia, S. (2016). Addressing water challenges on the North China Plain with hydroeconomic optimization. Abstract from 7th International Water Resources Management Conference of ICWRS, bochum, Germany. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Addressing water challenges on the North China Plain with hydroeconomic optimization Grith Martinsen1, Claus Davidsen1, Peter Bauer-Gottwein1, Suxia Liu2, Xingguo Mo2, Shaofeng Jia2 1) Department of Environmental Engineering, Technical University of Denmark 2) Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences With its diverse environment and large population, China is facing water resource challenges, both in terms of quantity and quality. The North China Plain (NCP) is one of the world’s most densely populated areas and one of the highly water stressed regions of China. It counts for 15% of the Chinese GDP, from both industry and agriculture. The high water demand for especially irrigation has caused decade long groundwater depletion, ecosystem deterioration and high pollution loads in the region. To alleviate the water crisis of Northern China the South-North Water Transfer Project has been constructed. However, the project alone cannot solve the NCP’s water crisis. A hydroeconomic optimization model has been developed for the NCP system. The model area represents the administrative area of the Hai River Commission. The challenges addressed are the spatio-temporal distribution of costs and curtailments from achieving a sustainable water allocation policy, especially focusing on groundwater abstraction and ecological minimum flows. Efficient linear programming solvers (LP) are used to enable adequate representation of the physical water delivery system and to move away from system simplifications. This enables the representation of links and interactions between the water resources system and the power system of Northern China. The multi-reservoir LP model is formulated as a flow path based optimization, which tracks each water delivery from supplier to receiver. This is useful for the exploration of optimal water allocation as well as water trading policies and other economic measures. The suggested setup is a move towards a more applicable and implementable model. A baseline run producing business-as-usual costs and deliveries across space and time is presented and compared with a model run including sustainability constraints. This shows changes in allocations and costs of ending groundwater depletion and keeping water quality criteria. It further reflects the conflict between sustainability and economic output of the energy, food and industrial sectors in a water resource management framework.