System and method for improving abrupt slope tree growth and water and soil loss

Abstract

The invention relates to a system and method for improving abrupt slope tree growth and water and soil loss, and belongs to the technical field of ecological landscape and sponge city construction. The system comprises fine-particle-size structure soil layers, large-particle-size structure soil layers, siphon drainage pipes, planting holes and planted trees, wherein the fine-particle-size structural soil layers are arranged at the bottoms of the planting holes, and the large-particle-size structural soil layers are arranged above the fine-particle-size structural soil layers and around the planting holes; and the siphon drainage pipes are installed between the fine-particle-size structure soil layers at the bottoms of the adjacent planting holes. A double-layer structure soil structure is utilized, and the soil with different particle sizes is mounted in a layered manner according to the difference of the soil infiltration rates of the soil with different particle sizes, so that the purposes of quickly infiltrating and accumulating rainwater and reducing water and soil loss are respectively achieved; and the water head difference existing in rainwater collection of the abrupt slope in the rainfall period is fully utilized, the siphon drainage pipes are ingeniously and specially installed to achieve siphon phenomenon linkage and automatic rapid drainage between the planting holes of different elevations, drainage pipeline blockage is reduced, and long-term effectiveness of drainage is ensured.

Description

technical field [0001] The invention relates to a system and method for improving tree growth and soil erosion on steep slopes, and belongs to the technical field of ecological landscape and sponge city construction. Background technique [0002] For reasons such as vehicle safety, my country stipulates that the slope of expressways in plain areas is <3%, and that in mountains and hills is <5%; the slope of first-class highways in plain areas is <4%, and that in mountains and hills is <6%; and so on, The lower the grade of the road, the lower the slope requirement, and the worst mountainous road drops to about 10%. But in fact, many special areas often exceed the above slope. For example, the street with the steepest gradient in the world - Baldwin Street in the southern city of Dunedin, New Zealand, has a gradient of up to 35% at its steepest point. In addition to steep slopes caused by natural causes such as undulating terrain, artificial steep slopes in citie...

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Problems solved by technology

[0005] The purpose of the invention is to solve the technical problem of how to im

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