Method for recovering underwater ecosystem of a river

Abstract

The present invention relates to a method for recovering an underwater ecosystem of a river. In particular, the method for recovering an underwater ecosystem of a river comprises a first step of constructing an upstream blocking wall at the same level as the bottom of a river such that the bottom of the river is positioned in the same line as upper surfaces of the upstream blocking wall; a second step of constructing a downstream blocking wall at the same level as the bottom of the river at a position spaced apart from the upstream blocking wall by a predetermined distance such that the bottom of the river is positioned in the same line as an upper surface of the downstream blocking wall; and a third step of dredging the bottom of the river in a predetermined depth according to a planned depth of water of the river and constructing a reservoir between the upstream and downstream blocking walls to release various kinds of underwater organisms suitable to regional characteristics, wherein the first to third steps are repeated to form a plurality of pond regions along the river. The method of the present invention further comprises a fourth step of constructing shallow regions for water purification between the plurality of pond regions. Therefore, there are advantages in that the underwater ecosystem of a river can be recovered and maintained healthily and the contamination of river can be prevented through the improvement of natural purification capability of the river, whereby a natural ecosystem including the ecosystem of an existing river can be kept more healthily and the river may be thus easily utilized as a water-friendly space.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for recovering an underwater ecosystem of a river, and more particularly, to a method for recovering an underwater ecosystem of a river, wherein a plurality of pond regions, each of which is composed of upstream and downstream blocking walls installed at the same height as the bottom of the river and a reservoir constructed in a certain depth between the upstream and downstream blocking walls, are formed and shallow regions are then formed between the adjacent pond regions to establish a basic environment for the restoration of underwater ecosystem so that the underwater ecosystem can be restored from the basic environment. [0003] 2. Description of the Related Art [0004] A conventional water utilization and control method has been developed to obtain necessary water resources. In this method, various structures such as a multi-purpose dam, a simple concrete dam or bank gener...

AI Technical Summary

Benefits of technology

[0007] The present invention is conceived to solve the problems in the prior art. Accordingly, an object of the present invention is to provide a method for recovering an underwater ecosystem of a river, in which deep pond regions and shallow regions are alternately constructed in order not to cut off the waterway of river, so that various underwater life can migrate upstream or downstream to prevent their inbreeding, various inhabitation environments can be constructed to keep the diversity of species, and the ecosystem can be recovered to construct a healthy ecosystem of a river having a good food chain.

Problems solved by technology

However, such structures cut off water flow, so that various kinds of fishes that have a habit to seek for a place suitable for themselves cannot move, i.e. can be isolated, which results in the inbreeding and thus significant decrease in the number of fishes.

In addition, the number of animals who eat the fishes has no choice but to decrease due to the break of food chain, thereby causing imbalance of the ecosystem.

In addition, the aforementioned structures have caused many environmental problems due to the break and destruction of an ecosystem.

In particular, an underwater dam hinders fishes from migrating and thus gives serious damage to an ecosystem of the underwater life.

In addition, after a certain period of time has been elapsed, water cannot be further stored due to stones, sands and soils carried upstream and piled up thereto, as well as the bottom of the river are unnecessarily raised.

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