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Restoration method for damaged ecosystem in steep-slope area in water-level-fluctuating zone of reservoir

An ecosystem and restoration method technology, applied in the direction of soil preparation methods, botanical equipment and methods, gardening, etc., can solve problems such as unsuitable for use, achieve wide application, promote survival, growth and development, and reduce surface runoff and soil erosion Effect

Inactive Publication Date: 2010-08-04
HUAZHONG AGRI UNIV
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Problems solved by technology

In summary, none of the above inventions are suitable for use in the region

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  • Restoration method for damaged ecosystem in steep-slope area in water-level-fluctuating zone of reservoir
  • Restoration method for damaged ecosystem in steep-slope area in water-level-fluctuating zone of reservoir
  • Restoration method for damaged ecosystem in steep-slope area in water-level-fluctuating zone of reservoir

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Embodiment Construction

[0019] The invention is aimed at the steep slope area of ​​the Danjiangkou Reservoir's drawdown zone, where the slope is relatively large, the soil is barren, and the site conditions are poor. Especially after the reservoir is adjusted and stored, the water level frequently and greatly fluctuates and the flooding time is too long, causing the vegetation at the edge of the reservoir to suffer Destroyed and difficult to grow, which further caused the problems of soil erosion and aggravated pollution, and a method invented in a situation where ecological restoration cannot be achieved.

[0020] Refer below figure 1 , 2 Taking the steep slope area of ​​the drawdown zone of Danjiangkou Reservoir as an example, the present invention will be described in detail.

[0021] The specific steps for restoration of damaged ecosystems in the steep slope area of ​​the water-level fluctuating zone are as follows:

[0022] 1) The lowest water level of the Danjiangkou Reservoir was in May, so May was c...

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Abstract

The invention relates to a restoration method for a damaged ecosystem in a steep-slope area in a water-level-fluctuating zone of a reservoir. The method comprises the following steps:when the impounded water level is at the lowest point, cleaning the upstream slope in the water-level-fluctuating zone, and manually tamping; digging planting holes at the top of the slope, and planting Chinese red pines and the like to form a multifunctional protective forest belt; digging planting grooves and planting holes within the range of the water-level-fluctuating zone, laying jute geotextile, planting vetiver within the range with the water-level-fluctuating depth of 2m to form a hedgerow; and mixedly planting vetiver and wire grass within the range with the water-level-fluctuating depth of 2-10m to form a combined vegetation slope restoration belt. The protective forest belt, the hedgerow and the combined vegetation slope restoration belt form a three-dimensional restoration space together, thereby ensuring that plants can take roots and restore in the steep-slope area in the water-level-fluctuating zone. By restoring the vegetation in large area, the invention effectively reduces the overland flow and the soil erosion, and improves the fertility and the properties of the soil, thereby restoring the damaged ecosystem. The invention has the advantages of convenient construction and less investment, can not be easily damaged by water, and is applicable to the water-level-fluctuating zone of a reservoir with large water-level-fluctuating range and precipitous topography.

Description

Technical field [0001] The invention relates to a method for repairing damaged ecosystems in steep slope areas of a reservoir drawdown zone. Background technique [0002] Danjiangkou Reservoir is the water source of the "South-to-North Water Diversion" mid-line project. It is located at the confluence of the Han River and Dan River. It is one of my country's large-scale water conservancy projects. The initial project of Danjiangkou Reservoir was completed in 1973. The normal water level is 157m, the summer flood control limit water level is 149m, and the drawdown zone area is 148km. 2 . After the second phase of the dam heightening project was completed in 2011, the normal water storage level reached 170m. Reservoir operation will start to store water at the end of the flood season in October each year, and the water level will rise to 170m in December; the water level will gradually drop from 170m to the flood control limit water level in May of the following year, and the wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/00
CPCY02P60/20
Inventor 李璐史志华方怒放尹炜
Owner HUAZHONG AGRI UNIV
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