Construction method of low elevation greenbelt based on sponge city

Abstract

The invention relates to the technical field of sponge cities, and provides a construction method of a low elevation greenbelt based on a sponge city aiming at solving the problem of low survival rateof grass. According to the technical scheme, the method comprises the following steps of S1, excavation of a foundation pit; S2, laying of a base material; S3, laying of base layer soil; S4, laying of planting soil, wherein the planting soil is mixed with fertilizer granules first and then laid on the base layer soil; S5, laying of surface layer soil, wherein the surface layer soil is mixed withgrass seeds first and then laid on the planting soil; S6, finishing of the surface of the surface layer soil, wherein the base layer soil, the planting soil and the surface layer soil adopt the same soil. The fertilizer nutrients of the planting soil are good by adding the fertilizer granules in the planting soil, after the seeds germinate, the root systems develop into the planting soil to absorbnutrients, interfaces are not easily formed among the base layer soil, the planting soil and the surface layer soil, so that the root systems of the grass easily penetrate through the soil, the effect that the grass absorbs nutrients from the planting layer is ensured accordingly, and therefore the survival rate of the grass is high.

Description

technical field [0001] The invention relates to the technical field of sponge cities, in particular to a construction method for sunken green spaces based on sponge cities. Background technique [0002] Sponge city is a new generation of urban stormwater management concept. It means that the city can be like a sponge and has good elasticity in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". [0003] The sunken green space mainly collects rainwater through a large area of ​​grass and temporarily stores it, which acts like a sponge during heavy rain and reduces drainage pressure. [0004] When building a sunken green space, the terrain is generally built first, and then the lawn is laid on the surface of the terrain. This method of construction will easily form an interface between the lawn and the terrain soil because the soil type of the lawn is not necessarily similar to the soil type of ...

AI Technical Summary

Problems solved by technology

[0004] When building a sunken green space, the terrain is generally built first, and then the lawn is laid on the surface of the terrain. This method of construction will easily form an interface between the lawn and the terrain soil because the soil type of the lawn is not necessarily similar to the soil type of the terrain, making the grass It is difficult to adapt and take root in the underground soil, which makes it difficult for the grass to absorb nutrients and water, resulting in a low survival rate of the grass. Therefore, there is still room for improvement

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