Ecological Landscape · Rain Garden: A Depression on the Street

A street-side rain garden. Between the sidewalk and the roadway is a planting strip depressed by twenty centimeters. Several gaps are opened in the curb to allow rainwater to flow in from the road, with pebbles laid at the entrance for energy dissipation; the depression is planted with flood-tolerant and drought-tolerant sedges and shrubs, with an overflow pipe ten centimeters above the ground in the middle. The soil surface is covered with bark chips, showing fine sand traces left from the last inflow. Next to it are street trees and permeable gravel paving. Avoid: using continuous curbs that block rainwater, making the planting strip a raised planter higher than the sidewalk, creating an impermeable liner at the bottom of the depression, using ornamental neat flowerbed plantings.

Translated from Chinese by AI.

一處街道邊的雨水花園。人行道與車道之間是一道下凹二十公分的植栽帶,路緣石上開著幾個缺口讓雨水從馬路流進來,入口處鋪著卵石消能;凹槽裡種著耐淹耐旱的莎草與灌木,中間有一根溢流口高出地面十公分。土壤表面覆蓋著樹皮屑,看得到上次流入時留下的細砂痕跡。旁邊是行道樹與透水的碎石鋪面。避免:使用連續不斷的路緣石阻斷雨水、把植栽帶做成高出人行道的花台、在凹槽底部做不透水墊層、使用觀賞性的整齊花壇植栽。