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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/hess-2019-185
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2019-185
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 14 Jun 2019

Submitted as: research article | 14 Jun 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).

Determination of the Optimal Lake-Marsh Pattern in the Lake-Marsh Wetland System based on Ecological Land Use and Ecological Water Use

Wuxia Bi1,2, Baisha Weng1, Denghua Yan1, Meng Li1,3, Zhilei Yu1,3, Lin Wang1, and Hao Wang1 Wuxia Bi et al.
  • 1State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, 100038, China
  • 2College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
  • 3Institute of Water Resources and Hydrology, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084, China

Abstract. The land use and water use competitions appear more seriously between lake-marsh wetland system and its surrounding socio-economic system, also inside the lake-marsh wetland system. However, few studies focus on solving the contradictions mentioned above. While this study proposed an optimal lake-marsh pattern determination method based on the joint regulation of ecological land and ecological water, on considering the ecological services values and water shortage amount in the lake-marsh wetland system. The optimal lake-marsh pattern determination should explore the land and water demand of the protection objects, also the water supply and water demand (especially evapotranspiration) in annual and monthly time-scale. Calculation and analysis were performed for the optimal pattern of the Wolonghu Wetlands as an example. The results mainly showed that the optimal lake-marsh pattern of the Wolonghu Wetlands can be obtained with the area ratio of lake-marsh equaling to 0.651 : 0.349 and the corresponding water level of 87.4 m in annual scale. In monthly scale, except July and August, the optimal area ratio of lake and marsh varied from 0.634 : 0.366 to 0.738 : 0.262. This study could provide references for the Wolonghu Wetlands management, also for similar lake-marsh wetland system and other ecological system.

Wuxia Bi et al.
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Short summary
This study focuses on solving the land use and water use competitions between lake-marsh wetland system and its surrounding socio-economic system, also inside the system. An optimal lake-marsh pattern determination method was proposed on considering the ecological services values and water shortage amount. We explored the optimal lake-marsh pattern in both annual and monthly scales. This study could provide references for the ecological spatial management and ecological water control.
This study focuses on solving the land use and water use competitions between lake-marsh wetland...
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