A Habitat Diversity Ecological Restoration Method for Urban Hard River

Abstract

The invention provides a city rigid watercourse habitat diversity ecological restoration method. According to the method, spur dikes are arranged on the both sides of a watercourse in a staggered mode, and ecological submerged dikes are arranged on the upstream portions of the spur dikes; a dead water zone is formed through the ecological submerged dikes, the spur dikes and the riversides, a gravel layer is laid in the dead water zone, an earthwork layer is laid on the gravel layer, and submerged plants with the high anti-pollution capacity are planted on the earthwork layer; a slow flow zone is formed on the downstream portion through the spur dikes and the riversides, a gravel layer is laid in the slow flow zone, an earthwork layer is laid on the gravel layer, and hygrophytes are planted on the earthwork layer; and floating plates are arranged on the downstream portions of the spur dikes, and floating-leaved plants are arranged in a grating of the floating plates. The city rigid watercourse habitat diversity ecological restoration method has the following advantages that by controlling current of the watercourse through the spur dikes and the ecological submerged dikes, winding rip current deep ditches are formed through the rigid watercourse, the self cleaning capacity of a river and the diversity of the landscape can be effectively improved, and the remolded watercourse can bear the city watercourse flood discharging function or water holding function at the same time.

Description

technical field [0001] The invention relates to the technical field of construction and restoration of urban ecological rivers, in particular to a habitat diversity ecological restoration method for transforming urban hard rivers by constructing ecological submerged dams. Background technique [0002] Under natural conditions, rivers are generally meandering, and there are deep pools and shoals alternately. Diversified river conditions enrich the ecological diversity of habitats in hard river channels, greatly increase the specific surface area of ​​the river bed, and make the The species and quantity of organisms on the riverbed have greatly increased, which is conducive to the enhancement of the self-purification ability of the water body. [0003] Rivers in modern cities are valuable resources for cities and citizens. However, the main characteristics of existing urban rivers are straightness and uniformity. At the same time, due to the small amount of water in urban riv...

AI Technical Summary

Problems solved by technology

[0004] (1) Purpose of the invention: In order to solve the problems existing in the above-mentioned prior art, the purpose of the present invention is to solve the common problems of single ecology, poor self-purification ability of water quality, and inability to take care of flood discharge etc.

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