老旧小区绿地系统的改造应将面积较大的集中绿地改造为雨水花园,并将住宅和

The renovation of the green space system in the old community should transform the large-scale centralized green space into a rainwater garden, and the green space beside the house and road into a grass ditch to collect and transmit the runoff rainwater from the roof and road. As an ecological drainage ditch, while transporting rainwater, the grass planting ditch can also absorb part of the runoff and intercept and remove some of the pollutants.

The transformation of the old district green space system should be transformed into rainwater garden, and the green space next to the house and road should be transformed into a grass ditch, which plays the role of collecting and transmitting the runoff rainwater of the roof and the road. As an ecological drainage ditch, while transferring rainwater, the grass-roots ditch can also eliminate part of the runoff and intercept and remove some of the pollutants.

In order to collect and transmit the runoff rainwater from the roof and the road, the concentrated green space with large area should be transformed into rainwater garden, and the green space beside the house and the road should be transformed into grass planting ditch. As a kind of ecological drainage ditch, the grass planting ditch can also absorb part of runoff and intercept and remove part of pollutants while transferring rainwater.<br>