LI Meng-meng,CHEN Liang,GUO Qi-zhong,et al.Expert Questionnaire Survey on Construction Benefits of Sponge City and Different Measures[J].China Water & Wastewater,2021,37(17 17):107-114.
Expert Questionnaire Survey on Construction Benefits of Sponge City and Different Measures
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
17 17
Page:
107-114
Column:
Date of publication:
2021-09-01
- Keywords:
- sponge city; expert questionnaire survey; economic benefit; ecological benefit; social benefit
- Abstract:
- In order to better understand sponge city and further its construction, it is necessary to investigate economic, ecological and social benefits of sponge city and its measures, so as to optimize comprehensive benefits of sponge city and improve public satisfaction. Therefore, domestic and overseas experts in the field of sponge city were invited to participate in a questionnaire survey on the importance of 28 benefit indicators of sponge city and the subjective evaluation of social benefit of 21 sponge city measures. Among the experts, 75% of them had in-depth knowledge of sponge city, and 91% of them were engaged in sponge city research, planning, design and management. For the sponge city planning and design, the top five important benefit indicators were as follows: reduction of pollutant concentration in urban runoff before entering the receiving water body, reduction of pollution from combined sewer overflows, increase of urban aesthetics, improvement of the living comfort of surrounding residents and recharging groundwater, and the average scores on these indicators were 7.8, 7.2, 7.1, 6.8 and 6.7 (the maximum point is 10), respectively. The expert with a higher level of familiarity gave a higher score of benefits. Among the experts engaged in the sponge city related work, the management personnel valued the cost-effectiveness ratio of the sponge city construction the most and desired to obtain the maximum benefits at the lowest costs. The social benefits of green infrastructures such as rainwater garden were generally superior to those of grey infrastructures such as infiltration pipe/trench.
Last Update:
2021-09-01