Ecological improvement method for sandy river channel matrix

Abstract

The invention discloses an ecological improvement method for a sandy river channel matrix. The method comprises gravel river reach matrix improvement and fine sandy river reach matrix improvement. The gravel river reach matrix improvement comprises the steps of pretreatment, matrix layer improvement, maintenance layer laying, reinforcement treatment and the like. The fine sandy river reach matrix improvement comprises the steps of pretreatment, matrix layer laying, maintenance layer laying, reinforcement treatment and the like. According to the method, different treatment methods are adopted for sandy river channels with different characteristics, targeted treatment can be conducted on the river channel matrix, and the optimal improvement effect can be achieved. After the sandy river channel matrix is improved by the improvement method, the stability of a river channel slope is greatly improved, the water seepage performance is reduced, the good water and fertilizer retention capacity is achieved, vegetation can be well planted on the improved river channel, and the improvement of the ecological environment of the river channel is facilitated.

Description

technical field [0001] The invention belongs to the technical field of river course improvement, and in particular relates to a method for ecological improvement of sandy river course matrix. Background technique [0002] The substrate of sandy river course is soft, it is difficult for vegetation to colonize, and its permeability is strong, it is difficult to retain water and fertilizer, the growth and development of vegetation lacks essential nutrients and growth is poor, and it is difficult to ensure the generation and transmission of material, energy and information in the river ecosystem. The current anti-seepage and seepage reduction technologies have solved the problem of river seepage and water loss, but excessive anti-seepage and seepage reduction measures have cut off the hydraulic connection between surface water and groundwater, causing biogenic substances in the subsurface area of ​​the river to flow with the water. The downstream-upstream process is blocked, the...

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Problems solved by technology

[0002] The substrate of sandy river is soft, the vegetation is difficult to colonize, and the permeability is strong, it is difficult to retain water and fertilizer, the growth and development of vegetation lack the necessary nutrients and the growth is poor, it is difficult to ensure the generation and transmission of material, energy and information in the river ecosystem

The current anti-seepage and seepage reduction technologies have solved the problem of river seepage and water loss, but excessive anti-seepage and seepage reduction measures have cut off the hydraulic connection between surface water and groundwater, causing biogenic substances in the subsurface area of ​​the river to flow with the water. The downstream-upstream process is blocked, the dissolved oxygen in the plant root zone is deficient, the biochemical reactions are affected, the plant growth is restricted, and the primary productivity of the river is insufficient

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