Method using ecological trench to intercept forest surface runoff

A technology of surface runoff and ecological ditches, applied in the field of forest soil erosion prevention and control, can solve problems such as neglect, and achieve the effect of simple operation, low cost, and maintenance of soil erosion

Inactive Publication Date: 2016-03-16
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

However, for a long time, the control of soil and water loss in forests often takes soil loss as the main indicator, and the object of control is too much emphasis on soil, while ignoring the main body of soil and water loss - surface runoff

Method used

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  • Method using ecological trench to intercept forest surface runoff
  • Method using ecological trench to intercept forest surface runoff
  • Method using ecological trench to intercept forest surface runoff

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings of the specification.

[0017] Such as Figure 1-3 As shown, it can be seen from the figure that the method for the ecological trench of the present invention to intercept forest surface runoff divides the slope into several small units along the contour direction, and then digs a horizontal trench along the contour on each unit , And plant native shrubs and herbs with developed root systems in the horizontal ditch, which is called "ecological ditch".

[0018] In the specific division, different critical slope lengths are determined according to different slope α. When the slope of the woodland is 5°-10°, the length of the small unit slope is 16-20m; when the slope of the woodland is 10°-15°, small The unit slope length is 10-16m; when the woodland slope is 15°-20°, the small unit slope length is 8-12m; when the woodland slope is 20°-25°, the small unit slope length...

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Abstract

The invention discloses a method using ecological trenches to intercept forest surface runoff, and aims to provide a method reducing water and soil loss in woodland of large slope and loosening soil; the method comprises the following steps: dividing the woodland with large slope into a plurality of small units in a contour direction; arranging ecological trenches on the lower portion of each unit along the contour; planting local shrubs and herbals in the ecological trenches so as to intercept surface runoff, thus reserving water and soil. The method can divide slope length so as to cut the slope runoff flow lines, thus reducing slope current flow velocity, prolonging runoff detention time on the slope, enhancing infiltration, reducing surface runoff amount and current sand carrying ability, reducing soil loss rate, and effectively improving forest water and soil maintenance capability. The method is simple and easy in operation, and simple means can realize water and soil maintenance effect, so the method is small in invest and cost, and has small damages on the forest.

Description

Technical field [0001] The invention belongs to the technical field of forest soil erosion prevention and control, and specifically relates to a method for intercepting forest surface runoff by using an ecological ditch. Background technique [0002] Surface runoff is one of the main sources of surface water erosion, and is the main component of flood flow. With its energy, it erodes the soil and changes the landform characteristics of the watershed. The forest ecosystem has a strong function of regulating and converting runoff, especially the forest ecosystem can quickly convert a large amount of surface runoff into slow flow, thereby reducing the function of runoff. [0003] The impact of vegetation on runoff is a well-known problem to many scientists, mainly manifested in blocking surface runoff, prolonging infiltration time, and affecting water redistribution. Research on the factors affecting surface runoff mainly focuses on rainfall intensity, land type, slope, litter thickn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCY02P60/20
Inventor 刘利芳于立忠张金鑫姚博
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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