摘要
目前LID的相关研究已逐渐综合化和多学科化,特别是针对LID措施建设与优化布局的探讨日益增加。以南京市鼓楼区为例,依托ArcGIS与SUSTAIN建立了一套城市雨洪管理评价与优化的方法框架,构建了城市尺度水文模型,并统筹考虑年径流总量控制率和投资效率,模拟得出不同LID连接情景(并联、串并联结合、串联模式)下的LID成本效益曲线和最优方案。结果可知:LID的成本效益存在一定的累积效应,串联模式下LID的成本效益优于并联模式;且当LID的规模和成本超出一定阈值后,径流削减率也逐渐趋于稳定。最后得出鼓楼区LID最优投资成本为7.4亿元,整体年径流削减率可达75%,并有针对性地提出了鼓楼区LID建设投资与空间配置优化的具体对策建议。
At present,LID related researches have become gradually integrated and multidisciplinary.In particular,there are increasing discussions on the construction and optimization layouts of LID measures.Taking Gulou District of Nanjing City as an example,this paper establishes a method framework for urban stormwater management evaluation and optimization based on ArcGIS and SUSTAIN.It builds a city-scale hydrological model.Taking the total annual runoff control rate,investment effectiveness and other construction objectives into consideration,it simulates and gets the cost-benefit curves for various LID connection schemes.The research shows that the cost-effectiveness of LID has a certain cumulative effect,and the cost-benefit of LID in the series mode is better than that of the parallel mode.When the scale and cost of LID exceed a certain threshold,the efficiency of runoff control will gradually stabilize.It concludes that the optimal investment cost of Gulou District is 740 million yuan,at which time the overall annual runoff reduction rate can reach 75%.Based on this,it puts forward some suggestions and countermeasures for the construction of LID in Gulou District.
作者
李沐寒
尹海伟
唐爽
LI Muhan;YIN Haiwei;TANG Shuang(China Design Group;School of Architecture and Urban Planning,Nanjing University)
出处
《风景园林》
2020年第11期57-63,共7页
Landscape Architecture
基金
国家自然科学基金(编号31670470,51878328,51478217)。
