Study on Ecological Water Table in a Reclaimed Water Irrigation Area in the North China Plain

Abstract:

The paper sets the definition of ecological water table in reclaimed water irrigation area, on which reclaimed water would not make the pollutants infiltrate into groundwater and not deteriorate groundwater environment. Case study from a soil profile in Daxing, Beijing shows that the ecological water table is changing due to the pollutants down movement in the unsaturated zone. Results show that the critical ecological groundwater depth is about 19.45 m in 2050 while the current is 8.25 m. The current water table depth of 18 m is within the ecological groundwater depth. The time lag between the human activities and water quality due to the relatively thick unsaturated zone should be paid attention to for sustainable water quality management.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4088-4092
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4088
• Online since: May 2012
• Authors: Chang Shui Yu, Ji Lai Liu, Yu Long Liu, Su Fen Wang
• Keywords: Ecological Water Table, Reclaimed Water, Soil Profile

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