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A plant storage and sand-fixation system in the hilly valley of the Bengang area

A valley and plant technology, applied in the field of construction and operation of hilly and valley vegetation systems, can solve the problems of limited area of ​​plant implementation area and limited sand blocking effect

Active Publication Date: 2021-09-14
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current plant measures for collapsed hills are implemented in the catchment areas, ditches, and diluvial cones of the collapsed hills. Due to the limited area of ​​the planted area, the sand-retaining effect is also limited.

Method used

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  • A plant storage and sand-fixation system in the hilly valley of the Bengang area
  • A plant storage and sand-fixation system in the hilly valley of the Bengang area
  • A plant storage and sand-fixation system in the hilly valley of the Bengang area

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with specific examples.

[0026] Embodiment Benggang group plant storage and sand fixation system

[0027] The invention provides a method for constructing a system for retaining and sand-fixing plants in the Bengang group by improving the surface roughness and changing the flow state of the surface runoff. The implementation site is Huacheng Town, Wuhua County, Guangdong Province. The specific steps are as follows:

[0028] 1) Site selection for hilly and ditch land. Select the exposed Benggang sandy land that is currently non-agricultural land, based on the area of ​​the Bengang group and the average erosion modulus (50000t·km -2 ·a -1 ), the area of ​​the plant-sediment-retaining system is determined to be the hills and valleys of the Bengang Group with a size of 110m×25m.

[0029] 2) Micro-topographic transformation of gully land. Due to sediment deposition, the terrain in this area ...

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Abstract

The invention discloses the construction and operation of a vegetation system for retaining and fixing the sediment of the collapsed hills by changing the surface roughness and runoff flow state of the collapsed hills and valleys. By screening and utilizing local native plants that are resistant to burial pressure and barrenness, the roughness of the underlying surface is increased, and the concentrated surface runoff (stream) is dissipated into surface diffuse flow, thereby reducing the sand-carrying capacity of the surface runoff, and then realizing the improvement of the collapse of the Bengang Group. Effective interception and stabilization of sediment. Compared with engineering measures, this system has low input costs, less human intervention during the operation period, is simple and easy to implement, and is easy to be accepted and promoted by local people. It is especially suitable for the treatment of remote collapsed hillock areas where transportation is inconvenient and large machinery is difficult to reach.

Description

technical field [0001] The invention belongs to the field of water and soil erosion control, and in particular relates to the construction and operation of a hilly and valley vegetation system that stores and fixes collapsed silt by changing the surface roughness and runoff flow state of the collapsed hills and valleys. Background technique [0002] The word "Benggang" originated from the title of "chair-shaped collapsed cliff landform in the source catchment area of ​​gullies and gullies in hilly and mountainous areas" in Meizhou, Guangdong Province. The total area of ​​collapsed hills distributed in seven provinces (autonomous regions) in southern my country is about 1220 km 2 , the total number is 239,100, and the direct damage and impact area of ​​collapsed hills is 19,500 km 2 . In addition, the distribution of collapsing hillocks is generally relatively concentrated, making collapsing hillock erosion the most intense and harmful erosion type in the tropical and subtr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02E02D3/00
CPCA01B79/02E02D3/00Y02P60/20
Inventor 廖义善袁再健郑明国黄斌谢真越吴新亮
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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