屋顶绿化单体基质材料对降雨径流氮磷特征的影响

doi:10.3969/j.issn.1000-2006.201804015

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南京林业大学学报（自然科学版） ›› 2019, Vol. 43 ›› Issue (03): 77-84.doi: 10.3969/j.issn.1000-2006.201804015

屋顶绿化单体基质材料对降雨径流氮磷特征的影响

席梦涵^1,4,郑思俊^2,3,张青萍^1*,张浪^1,2,3*

1.南京林业大学风景园林学院,江苏南京 210037; 2.上海市园林科学规划研究院,上海 200232; 3.上海城市困难立地绿化工程技术研究中心,上海 200232; 4. 安徽省交通规划设计研究总院股份有限公司,安徽合肥 230088

出版日期:2019-05-15 发布日期:2019-05-15
基金资助:
收稿日期:2018-04-11 修回日期:2018-09-30
基金项目:上海市科学技术委员会科研计划项目(15DZ1203700)。
第一作者:席梦涵(xmh199292@qq.com)。*通信作者:张青萍(qpzh@njfu.edu.cn),教授,负责论文指导与逻辑修正,ORCID(0000-0003-3699-8450); 张浪(1132467518@qq.com),教授,负责明确论述核心点与提供基金支持,ORCID(0000-0002-6609-5001)。

Influence of roof greening substrate materials on nitrogen and phosphorus characteristics in rainfall runoff

XI Menghan^1,4, ZHENG Sijun^2,3, ZHANG Qingping^1*, ZHANG Lang^1,2,3*

1.College of Landscape Architecture, Nanjing Forestry University,Nanjing 210037,China; 2.Shanghai Academy of Landscape Architecture Science and Planning,Shanghai 200232,China; 3.Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites,Shanghai 200232,China; 4.Anhui Transport Consulting & Design Institute Co. Ltd, Hefei 230088, China

Online:2019-05-15 Published:2019-05-15

摘要/Abstract

摘要： 【目的】随着城市建设的发展,屋顶绿化成为拓展空间绿化的重要形式,但其径流氮磷浓度一直备受争议,选择对降雨径流氮磷浓度影响较小的单体基质材料是普及屋顶绿化需解决的关键技术问题。【方法】选用6种单体基质材料作为研究对象,比较其理化性质,并通过模拟降雨试验研究不同基质降雨径流氮磷浓度特征。【结果】泥炭土延迟产流能力最佳,椰糠与泥炭土径流削减率最高,分别为25.97%、23.44%; 有机基质降雨径流氮磷浓度趋势类似,发现初期冲刷效应,稻壳炭径流氮磷浓度初期冲刷效应最为严重,椰糠次之,泥炭土最弱; 蛭石对降雨中氨氮具有较好吸附作用,初期浓度削减率达到46%; 蛭石、陶粒对降雨中总磷具有较好吸附作用; 有机基质中稻壳炭降雨径流氮磷污染负荷最高,总氮、氨氮和硝态氮污染负荷分别达256.18、98.90、157.29 mg/m²。【结论】不同单体基质材料对降雨径流氮磷浓度影响差异较大,从径流水量与径流水质(氮磷浓度)来看,建议采用椰糠、泥炭土、珍珠岩、蛭石作为上海市屋顶绿化配方基质材料,即上海市供选择的污染负荷较低的“环境友好型”屋顶绿化基质材料。

Abstract: 【Objective】With the development of urban construction, the greening of roofs has become an important form of expanding green spaces; however, nitrogen and phosphorus concentrations in runoff is an issue. Selecting a monomer matrix material that does not influence the concentrations of nitrogen and phosphorus in rainfall runoff is the key technical problem to be solved to increase the popularity of roof greening.【Method】Six substrate materials were selected as the research materials and their physical and chemical properties were compared. The characteristics of nitrogen and phosphorus concentrations in rainfall runoff from the different substrates were studied using a simulated rainfall experiment. 【Result】The delayed runoff yield of peat soil was the best, with the runoff reduction rates of coir and peat soil being 25.97% and 23.44%, respectively. The nitrogen and phosphorus concentration trends in runoff from the organic substrates were similar. The first flush of nitrogen and phosphorus from the rice husk carbon contained the highest concentrations, coir contained the second highest, and peat soil was the lowest. Vermiculite had a good adsorption effect on ammonia nitrogen in rainfall and the initial concentration reduction rate was 46%. Vermiculite and ceramsite had a good adsorption effect on total phosphorus in rainfall. The nitrogen and phosphorus pollution loading of rice husk carbon runoff was the highest of the organic substrate materials. The total nitrogen, ammonia nitrogen, and nitrate nitrogen pollution loadings were 256.18, 98.90 and 157.29 mg/m², respectively. 【Conclusion】Different substrate materials had different effects on the nitrogen and phosphorus concentrations in rainfall runoff. Coir, peat soil, perlite and vermiculite were suggested for use as substrate materials to create green roofs in Shanghai.

中图分类号:

TU996

席梦涵,郑思俊,张青萍,等. 屋顶绿化单体基质材料对降雨径流氮磷特征的影响[J]. 南京林业大学学报（自然科学版）, 2019, 43(03): 77-84.

XI Menghan, ZHENG Sijun, ZHANG Qingping, ZHANG Lang. Influence of roof greening substrate materials on nitrogen and phosphorus characteristics in rainfall runoff[J].Journal of Nanjing Forestry University (Natural Science Edition), 2019, 43(03): 77-84.DOI: 10.3969/j.issn.1000-2006.201804015.

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屋顶绿化单体基质材料对降雨径流氮磷特征的影响

Influence of roof greening substrate materials on nitrogen and phosphorus characteristics in rainfall runoff

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