Construction method of fish habitats in inland waterway engineering

Abstract

The invention discloses a construction method of fish habitats in inland waterway engineering. The construction method comprises the steps that a tributary arm side ditch or a river bend backwater area communicating with a main navigation channel is adopted on a river marginal bank so as to build a habitat space suitable for inhabiting, spawning and foraging of fishes; and the regulated dam body type is adopted within the range of a regulation line of the main navigation channel to build a habitat space suitable for inhabiting, spawning and foraging of the fishes. The diversified habitats suitable for inhabiting of the fishes are constructed correspondingly in different areas in the river marginal bank and the main navigation channel through regulation engineering layout and regulated dam body structural improvement. 1, in space, the construction method can be suitable for the different areas such as the river marginal bank and the main navigation channel, and the construction requirements of the fish habitats in different river forms are met; 2, in function, the function of river ecological protection is met; and 3, ecologically, the hydrodynamic framework conditions in the main navigation channel are improved, and the diversified habitats which are in a flow state and abundant in terrain are built.

Description

technical field [0001] The invention belongs to the technical field of inland waterways and relates to a method for constructing fish habitats in inland waterway engineering. Background technique [0002] As an important way to utilize river water resources, the development of inland shipping, with the goal of building a waterway that satisfies the safety and efficient navigation of ships, is bound to transform the natural shape of natural rivers, which are wide and shallow, through bank protection, damming, dredging and other engineering measures. Narrow, uniform, and convenient water transport channels destroy or occupy the natural habitat space of fish, reduce the morphological diversity of natural rivers, and lead to the loss of biological habitats, the decrease in the number of species, and even the extinction of some species . Under the background that the country is accelerating the reform of the ecological civilization system, building a beautiful China, and promoti...

AI Technical Summary

Problems solved by technology

[0003] At present, structures such as fish nest revetments and artificial fish nests provide sheltered habitats for fish, but the habitats (spawning grounds, feeding grounds, wintering grounds and migration passages) that fish depend on at each stage of their life history It is not the same, man-made structures cannot build suitable habitat space for fish such as water depth, flow velocity, bottom quality, water temperature, etc., and may not be able to produce good fish aggregation effect

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