PROGRESS IN GEOGRAPHY ›› 2017, Vol. 36 ›› Issue (11): 1402-1412.doi: 10.18306/dlkxjz.2017.11.009

• Orginal Article • Previous Articles     Next Articles

Regional difference of cost effectiveness of low impact development (LID) technical facilities in Chinese cities

Dalong LI1,2,3(), Shaofeng JIA1,2,*(), Aifeng LV1,2, Wenbin ZHU1,2   

  1. 1. Institute of Geographic Sciences and Nature Resources Research, CAS, Beijing 100101, China
    2. Key Laboratory of Water Cycle and Related Land Surface Process, CAS, Beijing 100101, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Online:2017-12-07 Published:2017-12-07
  • Contact: Shaofeng JIA;
  • Supported by:
    Key Research Program of the Chinese Academy of Sciences, No.KFZD-SW-301


With accelerating urbanization, population growth, and urban expansion, modern urban stormwater management faces new challenges. Based on the scenario analysis method, this study analyzed the cost-effectiveness of China's urban low impact development (LID) technical facilities. We calculated the benefits of different facilities under 80% and 95% rainfall event control rate scenarios respectively in the 30-year service period. The results show that the cost of construction and maintenance in the northern cities are higher than those in the southern cities. Benefits of stormwater management in the southern cities are generally higher than those in the northern cities. In addition, within the northern cities, benefits of urban stormwater management are lower in Beijing, Tianjin, and northwest regions. For different facilities, the cost of stormwater management for in situ infiltration is between 6 and 188 yuan/m3, significantly higher than the technical facilities with confluence function. Due to their low cost and reasonable effectiveness, combined sunken green area and rainwater wetland are suggested for northern cities with low precipitation. In the southern cities with more rainfall and strong rainfall intensity, it is recommended to use biological retention facilities in combination with regulating ponds. These methods not only can increase the storage capacity to meet the requirements of rainfall control rate but also can increase the rainwater infiltration and help purifying rainwater on the ground.

Key words: urban stormwater management, low impact development (LID), cost-effectiveness, scenario analysis, China