Abstract
Following sponge city concept, taking Qunli New District as study object, and planning water-saving green space system (WGSS) that can use rainwater resources. GIS and ArcHydro were used to analyse hydrological characteristics, extract gathering areas and outlets of rainwater, and determine location and scale of WGSS and reservoir in district. Amount of collectible rainwater in district reaches 3.79 × 106 m3/a; WGSS should be planned in areas where value of rainwater harvesting cumulant reaches 47−482. Reservoirs should be planned in areas located at the end of level-3 or level-4 streamnets and where rainwater harvesting cumulant reaches 283–3.37 × 105. A total of 563.8 hm2 is planned as WGSS, accounting for 22.27% of the total, and 29 reservoirs can be constructed. In the long-term, the total area of green spaces could reach 857.8 hm2, with green space rate up to 34%, public green spaces reaching 13 hm2/per capita, with park green spaces reaching 422.7 hm2, productive green spaces, 50.4 hm2, protective green spaces, 133.5 hm2, accessory green spaces, 170.5 hm2, and other types green space, 80.7 hm2. Park, productive, and most of accessory green spaces have been planned within proposed WGSS, accounting for 66% of total area in the long term.
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This research was funded by Heilongjiang Natural Science Foundation, grant number E2018009.
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Liu, D., Wang, D., Du, G. et al. Planning of Water-Saving Green Space System Based on GIS Technology and Archydrodata Model. Water Resour 49, 733–742 (2022). https://doi.org/10.1134/S0097807822040121
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DOI: https://doi.org/10.1134/S0097807822040121