Ecological ditch-and-source-preserving restoration method for slopes in gully regions of eastern-Gansu Loess Plateau

Abstract

The invention relates to an ecological ditch-and-source-preserving restoration method for slopes in gully regions of eastern-Gansu Loess Plateau. The method is used for carrying out analysis of the landform, erosion degree and groundwater distribution of the slopes in combination with a topographic map in order to match corresponding slope types. The slope types include (1) large slopes with large cutting and filling areas; (2) large slopes that are in a development period and with surrounding conditions not allowing large-area cutting and filling works; (3) sections with small landslides with a relatively great sliding risk, good overall stability and with landslides and less-stable slope local soil bodies having wedge sliding hazards; (4) small slopes with stretch-draw cracks at back edges; (5) small slopes or unstable blocks not allowing cutting and filling works; and (6) sections having construction and structures needing to be protected. According to the invention, on the basis of maximized protection of the original topography, landform and ecological substrate of the Loess Plateau, point-to-point and precise restoration of the gully regions of different topography and landforms in eastern-Gansu Loess Plateau is realized.

Description

technical field [0001] The invention relates to the technical field of ecological environment restoration, in particular to a method for ecological restoration of gullies and grassland protection slopes in the gully area of ​​the Loess Plateau in eastern Longdong. Background technique [0002] Longdong area is located in the central part of my country's Loess Plateau, and is one of the typical regions for the development of loess landforms in my country. This area is characterized by alternating plateaus and gullies, vertical and horizontal gullies, sparse vegetation, and loose soil. Soil erosion is serious. With the disturbance of human activities such as urban expansion, infrastructure construction, and oil and coal resource development, water and soil erosion in gully areas has intensified, gully heads continue to extend, plateau surfaces shrink year by year, and natural disasters such as landslides, landslides, and collapses often occur. It is imperative to protect the g...

AI Technical Summary

Problems solved by technology

[0003] So far, the rigid management methods such as horse trails and terraced fields have been commonly used in the gully area of ​​the Loess Plateau in the east of Longdong to protect the plateau slope, which has a low degree of integration with the ecological environment and has destroyed the original landform and ecological base of the Loess Plateau.

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