研究报告
郭超,李家科,马越,李怀恩,袁萌,姬国强.雨水花园运行寿命分析与价值估算[J].环境科学学报,2018,38(11):4391-4399
雨水花园运行寿命分析与价值估算
- Fate analysis and value estimation for rain gardens
- 基金项目:陕西省自然科学基金重点资助项目(No.2015JZ013);西咸新区沣西新城海绵城市基础研究资金资助项目(No.2017610002000088)
- 郭超
- 西安理工大学省部共建西北旱区生态水利国家重点实验室, 西安 710048
- 李家科
- 西安理工大学省部共建西北旱区生态水利国家重点实验室, 西安 710048
- 马越
- 陕西省西咸新区沣西新城开发建设有限公司海绵城市技术中心, 咸阳 712000
- 李怀恩
- 西安理工大学省部共建西北旱区生态水利国家重点实验室, 西安 710048
- 袁萌
- 陕西省西咸新区沣西新城开发建设有限公司海绵城市技术中心, 咸阳 712000
- 姬国强
- 陕西省西咸新区沣西新城开发建设有限公司海绵城市技术中心, 咸阳 712000
- 摘要:雨水花园作为典型的低影响(LID)开发设施之一,在径流量削减和污染物净化方面起着重要作用.为探索雨水花园运行寿命和估算其功能价值,于2011年3月—2017年10月对西安理工大学校内3个雨水花园进行了16~40场不等的降雨监测.结果表明,雨水花园的径流量削减率和污染负荷削减率呈先增大后减小的趋势.结合污染负荷削减,提出了雨水花园"三阶段净化"概念—即净化增长期、净化稳定期和净化衰弱期,简称TSP概念,并绘制了P-F概念图.排水型和入渗型雨水花园各功能价值排序为:涵养水资源 > 水质净化 > 维持生物多样性 > 调节气候 > 提供美学景观;入渗型雨水花园综合价值和单位面积价值分别是排水雨水花园的4.16倍和4.84倍.
- Abstract:As a typical low impact development (LID) facility, rain garden plays an important role for runoff reduction and pollutant purification. In order to evaluate the fate and value of rain garden, 16~40 rainfall events were monitored and analyzed for three rain gardens in Xi'an University of Technology from Mar. 2011 to Oct. 2017. The results show that:①The reduction rates of rain garden on runoff and pollutant load firstly increase and then decrease during the monitoring period of time.②Combined with the reduction capacity change of rain garden on pollution load, a ‘three-stage purification’ (TSP) concept, i.e. purification growth, stability, and attenuation, is proposed, and the P-F (pollutant load reduction rate versus rain garden operation fate) concept figure is drawn.③The functional value for rain gardens of both drainage and infiltration is the following order:water conservation > water quality purification > maintenance of biodiversity > adjusting local microclimate > beautifying the surroundings. The values of infiltration rain garden, regarding to comprehensive and unit area, are respectively 4.16 and 4.85 times as those of drainage rain garden.