Method for improving function of green space cavernous body ecological pump

A sponge and green space technology, which is applied in the fields of soil preparation, general water supply conservation, agricultural machinery and implements, etc., can solve the problems of not being able to fully exert the function of the green space sponge, water storage, poor water absorption capacity, poor permeability, etc., and achieve low cost , good effect, high storage utilization rate

Pending Publication Date: 2022-05-03
中铁十六局集团置业投资有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the construction of sponge city, emphasis is placed on adding permeable bricks and permeable ground, or increasing reservoirs, drainage channels, and recycling rainwater after purification. Such gray facilities cannot fully reflect the concept of sponge city. We believe that "mountain , water, forest, field, lake|" In this system, farmland and forestland have the most elastic sponge function, among which the urban green space sponge function is particularly prominent and important, and the urban green space soil is hardened and has poor permeability, so it can store water after rainfall. The water and water absorption capacity is also poor, and the function of the sponge body of the green space cannot be fully exerted

Method used

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  • Method for improving function of green space cavernous body ecological pump

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Effect test

Embodiment 1

[0035] see figure 1 , a method for improving the function of the green sponge ecological pump, comprising

[0036] The first step: improve the soil, the performance reaches the loam soil, and the soil is improved by using decomposed fermented organic green plant waste

[0037] 1. Increase the content of organic matter in the soil to ensure that the infiltration rate reaches the standard test:

[0038] Through the experimental research, it is concluded that the soil organic matter content is 50-70g / kg, and the soil permeability is the best, which meets the requirement of the sponge city soil infiltration rate> 5mm / h. The experimental design is as follows: use the original green soil as a control, and choose to add green plants Decomposed organic matrix, its main indicators are: organic matter 56.99g / kg, total nitrogen 1.45%, total phosphorus 0.58%, total potassium 0.91%, pH7.8, EC0.36mS / cm. Add 30g / kg, 50g / kg, 70g / kg, and 100g / kg to the organic matter respectively, and observ...

example 2

[0059] A method to improve the function of the sponge ecological pump in green land. In the greening project of Haiyuxinju residential area in Caofeidian Industrial Zone, Hebei Province, the original soil is dredging fill soil, which cannot be directly greened. The traditional soil improvement is expensive and difficult to implement. To transport passenger soil into the construction site, we use the original soil improvement method. Step 1: It is detected that the organic matter of the soil is 12.6g / kg, the bulk density is 1.48g / ㎝3, and the permeability is 0.68 mm / h.

[0060] Step 2: Improve dredging and filling soil, apply organic matter decomposed from waste organic matter into the soil, the organic matter content is greater than 70g / kg, the soil bulk density after improvement is 1.3g / ㎝3, and the infiltration rate is greater than> 5mm / h , the organic matter content is greater than 60g / kg. Step 3: Check that the rainfall in this area is 636mm, the evaporation is 1680mm, and ...

example 3

[0062] A method to improve the function of the sponge ecological pump in the green space. During the reconstruction of the sponge city community in Nankai District, Tianjin, the original soil was improved first, and the soil organic matter was increased by more than 50g / kg. Combined with the original plants in the community, the eucalyptus, red-leaf Ailanthus, and green peach were retained. , The original plants of Euonymus euonymus were added to the original plants, including ditang, honeysuckle, and clove shrubs, and the ground cover plants of broccoli were used to transform the community, so as to avoid the phenomenon of water accumulation in the community after rainfall, reflecting the needs of sponge city construction.

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Abstract

The invention discloses a method for improving the function of a green space cavernous body ecological pump. The method comprises the steps of soil performance improvement, plant variety selection, planting configuration mode selection, construction of the green space cavernous body ecological pump and guarantee of continuity of the cavernous body function. The device has the advantages that the rainwater storage and utilization rate is high, rainwater can be stored, permeated and utilized for plant growth in time in a green land regardless of small and medium rain or heavy rain including snowing, and the function of a green sponge body is truly embodied; the organic matter content of the soil is increased, the physical and chemical properties, moisture characteristics and nutrient characteristics of the soil are substantially improved and promoted, and the process that soil improvement, natural utilization of rainwater and plant requirements are consistent is embodied; waste generated by the green land is fermented and decomposed into an organic matrix which is used as a soil improvement raw material, the investment cost is low, the effect is good, the comprehensive benefit is high, green land soil and overground plants construct an efficient and continuous cavernous body ecological pump, and the benefit of green elastic sponge is greatly played.

Description

technical field [0001] The invention relates to a green land sponge ecological pump, in particular to a method for improving the function of the green land sponge ecological pump, which belongs to the technical field of green land construction and maintenance. Background technique [0002] With the continuous acceleration of the urbanization process, the urban population has increased sharply, and the urban construction area has expanded rapidly, making the underlying surface of the city more and more covered by cement and asphalt, which has led to an increase in the impermeable area of ​​the city, especially the central urban area. In turn, it hinders the infiltration of rainwater, increases the surface runoff coefficient, shortens the peak confluence time, increases the peak flow, and poses a serious threat to the urban drainage system and infrastructure. [0003] At present, the impermeable pavement in the city has caused a large amount of urban rainwater runoff, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G17/00E03B3/02
CPCA01B79/02A01G17/005E03B3/02Y02A20/108
Inventor 刘富海刘一翔刘剑强刘瑞军徐玉海王宇翔李泽旭
Owner 中铁十六局集团置业投资有限公司
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