A scheme to meet ecological water demand of serial water bodies
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Abstract:
In northern China, where water resources are in long-term shortage, it is common in nearly every city to see serial river-dam-type landscape water bodies built to obstruct rivers and retain water. To calculate the minimum water required to sustain the basic health of such an artificial river ecological system consisting mostly of water landscape, this paper studied the case of a segment of Hutuo River needing remediation of water environment, built an integrated mathematical model that describes the water quality and quantity changes of the “serial dam-type landscape water body”, and proposed a scheme to meet the ecological water demand of river-dam-type landscape water bodies with consideration to both water quality and quantity. The results showed that under the circumstance of 75% frequency of rainfall, the minimum water required by this segment of Hutuo River needing remediation of water environment is 34500 thousand m3/a. This paper also provided the explicit dates and amount of water supply, and provided support for the ecological protection of northern serial river-dam-type landscape water bodies.
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