Effects of land use change and water reuse options on urban water cycle

Jiho Lee, Gijung Pak, Chulsang Yoo, Sangdan Kim, Jaeyoung Yoon

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)

    Abstract

    The aim of this article was to study the effects of land use change and water reuse options on an urban water cycle. A water cycle analysis was performed on the Goonja drainage basin, located in metropolitan Seoul, using the Aquacycle model. The chronological effects of urbanization were first assessed for the land uses of the Goonja drainage basin from 1975 to 2005, where the ratio of impervious areas ranged from 43% to 84%. Progressive urbanization was identified as leading to a decrease in evapotranspiration (29%), an increase in surface runoff (41%) and a decrease in groundwater recharge (74%), indicating a serious distortion of the water cycle. From a subsequent analysis of the water reuse options, such as rainwater use and wastewater reuse, it is concluded that wastewater reuse seemed to have an advantage over rainwater use for providing a consistent water supply throughout the year for a country like Korea, where the rainy season is concentrated during the summer monsoon.

    Original languageEnglish
    Pages (from-to)923-928
    Number of pages6
    JournalJournal of Environmental Sciences
    Volume22
    Issue number6
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Funding Information:
    This research was financially supported by a Korea University Grant.

    Keywords

    • Aquacycle model
    • Land use change
    • Water reuse

    ASJC Scopus subject areas

    • Environmental Engineering
    • Environmental Chemistry
    • General Environmental Science

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