基于LID的东辽阳径流控制及景观规划设计方法

Control and Landscape Design Planning Method of Runoff in East Liaoyang Based on LID

目的研究土地利用方式的改变对径流控制率的影响,提出增加径流控制率的低影响开发(LID)技术措施,使得研究区整体控制率大于75%.方法根据东辽阳规划前后土地利用类型的改变与径流控制率的关系,识别不同土地利用方式;利用方程计算及模型输出,分析各用地类型径流控制率情况,识别不同用地类型与径流控制率的关系.结果通过改变用地类型可以增加径流控制率19%,绿地采用较高的年径流总量控制率控制标准,道路、市政设施用地年径流总量控制率标准较低,居住、商业、公用设施用地采用70%左右的年径流总量控制率目标.结论通过增加绿化和水域面积可以增加径流控制率,仅通过下沉式绿地和透水铺装可满足海绵城市指标要求,但也可使用其他LID技术联用以保证达成建设目标.

The influence of land use change on runoff control rate was studied,and the lowimpact development（LID） technical measures to increase runoff control rate were proposed.The overall control rate of the study area was greater than 75%.According to the East Liaoyang land use planning changes and types of the relationship between the rate of runoff control,different land use patterns recognition,using equation calculation and model output,analyzes all kinds of land runoff control rate,without recognition of relationship between land types and runoff control rate.By changing the land use types can increase the runoff control rate of 19%,green high annual runoff control rate control standard,roads,municipal facilities land runoff control rate was low,residential,commercial,public facilities land use about 70% of the total annual runoff control rate.By increasing the greening and water area can increase the runoff control rate,only through the sunkengreen space and permeable pavement can meet the requirements of sponge city index,but also can use other LID technique in order to achieve the goal of building.