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...

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