A kind of sustainable green space sponge structure and preparation method thereof

Abstract

The invention discloses a sustainable green space sponge structure, which sequentially comprises a surface covering layer, a filter layer, a circulating water storage layer, a leaching layer, and a nutrient deposition layer from top to bottom. The sponge structure is improved and strengthened according to the natural forest soil structure, and has strong water absorption and water storage capabilities. Compared with the original soil, the bulk density and pH of the sponge structure are lower, and it can effectively prevent soil compaction. The sponge Compared with the original soil, the content of organic matter, total nitrogen, and available phosphorus in the sponge structure has increased compared with the original soil, and the sponge structure can inhibit the growth of weeds, reduce dust, maintain soil temperature, and improve the green landscape effect and cover safety. In addition, the present invention provides a preparation method of the sustainable green space sponge structure, which can realize the recycling of garden plant waste, and can accelerate the return of nutrients in garden plant waste to nature. Convenience, low cost and other advantages.

Description

technical field [0001] The invention relates to the technical field of landscape engineering, in particular to a sustainable green space sponge structure and a preparation method thereof. Background technique [0002] Urban green space soil is an important source of life to maintain the growth of urban green space plants, and it is also an important "sponge body" for the construction of sponge cities. Due to years of human disturbance, urban green space soil has difficulty forming soil layers, thin topsoil layers, and easy-to-build blocks , Fertility decline, microbial system destruction and other problems lead to the overall degradation of the physical properties of urban green space soil, which reduces the air permeability and water storage performance of urban green space soil. Now many places have built permeable pavements, but even if the pavement is permeable, the soil infiltration capacity and water storage capacity are insufficient, and the effect of the permeable pa...

AI Technical Summary

Problems solved by technology

[0002] Urban green space soil is an important source of life to maintain the growth of urban green space plants, and it is also an important "sponge body" for the construction of sponge cities. Due to years of human disturbance, urban green space soil has difficulty forming soil layers, thin topsoil layers, and easy-to-build blocks , fertility decline, microbial system destruction and other problems, leading to the overall degradation of the physical properties of urban green space soil, which reduces the air permeability and water storage performance of urban green space soil

Now many places have built permeable pavement, but even if the pavement is permeable, but the soil infiltration capacity and water storage capacity are insufficient, the effect of the permeable pavement will be greatly reduced

[0003] At present, the sponge bodies that are widely used in the construction of sponge cities across the country include sunken green spaces, permeable pavements, green roofs and other infrastructure. Infiltrate into the underground soil, but if there is a problem with the soil, it only has the function of infiltration, but no water storage, water purification and ornamental functions

[0004] At the same time, due to the acceleration of the national urban greening process, the amount of garden plant waste is also increasing year by year. The green coverage rate of the national urban built-up area is 39.59%, and the green area rate is 35.72%. Among them, the green coverage area of ​​the national urban built-up area is 1.812 million hm 2 , an increase of 93,000 hm over 2012 2 ; Urban per capita park green area 12.26m 2 , an increase of 0.46m over 2012 2 , it can be seen that while the total amount of urban garden green space is growing steadily, the garden plant waste generated by greening is also increasing. The traditional way of burning or landfilling garden plant waste will cause environmental pollution. , it is also a waste of resources, which is incompatible with the goal of building an eco-friendly ecological garden

[0005] And due to the increase of urban forest coverage, the area of ​​green space under the forest has also further increased

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