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Estimating Urban Green Space Irrigation for 286 Cities in China: Implications for Urban Land Use and Water Management

Author

Listed:
  • Lianlian Pan

    (ZJU-UIUC Institute, Zhejiang University, Haining 314400, China)

  • Yiyang Zhao

    (ZJU-UIUC Institute, Zhejiang University, Haining 314400, China)

  • Tingju Zhu

    (ZJU-UIUC Institute, Zhejiang University, Haining 314400, China)

Abstract

Urban green space has increased significantly in many cities in China as a result of rapid urbanization. Despite various environmental and societal benefits of urban green space, its irrigation water use has become an important yet under-researched issue in urban water management. Using a newly developed green space evapotranspiration and soil water budgeting model coded in Python, this research estimated the irrigation water requirement of urban green space for 286 cities at the prefecture level and above in China, with daily meteorological data in 1986–2011, the distribution and areas of urban green space from the 30 m resolution “Essential Urban Land-Use Categories in China” database, and green space types from the 10 m resolution “10 m resolution global land cover” database. The estimated annual average irrigation water requirement of urban green space for these 286 cities was 8.7 billion m 3 , accounting for over 20% of residential water consumption in the cities where data on residential water use were available. We also investigated the spatiotemporal variation of urban green space irrigation water requirement and the factors that influence such variations. To the best of our knowledge, this study develops the first set of results of urban green space irrigation for all major cities in China, thus providing useful insights for green space irrigation and urban water man-agement in the context of rapid urbanization and sustainable water management.

Suggested Citation

  • Lianlian Pan & Yiyang Zhao & Tingju Zhu, 2023. "Estimating Urban Green Space Irrigation for 286 Cities in China: Implications for Urban Land Use and Water Management," Sustainability, MDPI, vol. 15(10), pages 1-14, May.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:10:p:8379-:d:1152558
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    References listed on IDEAS

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    1. Chao Bao & Chuang-lin Fang, 2012. "Water Resources Flows Related to Urbanization in China: Challenges and Perspectives for Water Management and Urban Development," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(2), pages 531-552, January.
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