Study on the Spatial Pattern of Runoff Volume Capture in Hubei Province from the Perspective of Sponge City
The runoff volume capture ratio is the primary indicator of sponge city planning.The design rainfall correspond-ing to the runoff volume capture ratio is very important for the sponge city planning.Based on the 30-year hydrological rain-fall data of 39 cities(include Shennongjia Forestry District)in Hubei Province,the relationship between the design rainfall and the runoff volume capture ratio in Hubei Province was analyzed,and the annual runoff volume capture target and the re-gional division for total rainfall runoff volume capture target of cities were formed,which filled the gap in the annual total runoff control index of cities in Hubei.The relevant value suggestions will contribute to the planning and construction of sponge cities in the Province.The results showed that the runoff volume capture ratio was divided into three zones,corre-sponding to Zone Ⅱ(80％≤α≤85％),Zone Ⅲ(75％≤α≤85％)and Zone Ⅳ(70％≤α≤85％)respectively,and the design rainfall ranges were Zone Ⅱ(10 mm≤H≤28.3 mm),Zone Ⅲ(12.7 mm≤H≤39.5 mm),Zone Ⅳ(14.3 mm≤H≤49.0 mm)respectively.Shennongjia,Danjiangkou,Shiyan etc.are in Zone Ⅱ,and 17 areas such as Xiangyang,Lichuan,Xuan'en etc.are in Zone Ⅲ,Suizhou,Tianmen,Xianning,Huangshi,Xiaogan,Xiantao,Huanggang,Ezhou,Wuhan and other regions are in Zone Ⅳ.
万方数据
维普
