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Water 2015, 7(5), 1792-1807; doi:10.3390/w7051792

Drought Mitigation Ability Index and Application Based on Balance between Water Supply and Demand

1
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, China
2
Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
*
Author to whom correspondence should be addressed.
Academic Editor: Athanasios Loukas
Received: 15 February 2015 / Revised: 29 March 2015 / Accepted: 3 April 2015 / Published: 27 April 2015
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Abstract

Drought impacts not only nature, but also the socioeconomic system and results from the imbalance of water supply and demand. It is necessary to estimate the ability of drought mitigation on the basis of water allocation. In this research, the drought mitigation ability index (DMAI) was constructed by the ratio of theoretical water supply and demand obtained from the optimal water allocation. Then, the DMAI was applied to Daqinghe watershed for temporal-spatial validation compared with the agricultural affected areas and the distribution of groundwater overexploitation. In addition, the historical (1961–2010) and future (2020) DMAI in Daqinghe watershed were analyzed. The results show that DMAI can overall represent the temporal-spatial characteristics of the drought mitigation ability. Furthermore, the DMAI of Daqinghe watershed is significantly decreased in the last 50 years, and groundwater resources play a prominent role in drought mitigation. Although the water from the South-to-North Water Transfer Project (SNWTP) can improve DMAI of Daqinghe watershed, the drought risk continues to be serious in the future. View Full-Text
Keywords: drought mitigation ability index (DMAI); theoretical water supply and demand; optimal water allocation; temporal-spatial validation; Daqinghe watershed drought mitigation ability index (DMAI); theoretical water supply and demand; optimal water allocation; temporal-spatial validation; Daqinghe watershed
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Liu, S.; Yan, D.; Wang, J.; Weng, B.; Wang, G.; Yang, M. Drought Mitigation Ability Index and Application Based on Balance between Water Supply and Demand. Water 2015, 7, 1792-1807.

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