System for restoring oyster reef and ecological restoration method of oyster reef

Abstract

The invention relates to a system for restoring an oyster reef and an ecological restoration method of the oyster reef. The system for restoring the oyster reef comprises a plant barrier zone, a physical barrier zone and an artificial reef body which are sequentially arranged on a coastal bank slope in the extending direction from the land to the sea, halophyte is planted in the plant barrier zone, the physical barrier zone is provided with a barrier piece, and the barrier piece is used for physically preventing bank slope silt from flowing into the artificial reef body. The ecological restoration method comprises the step of constructing the system for restoring the oyster reef on the coastal bank slope, wherein the bottom surface of the plant barrier zone is lower than the average high tide line, the physical barrier zone is arranged in anintertidal zone, and the artificial reef body is arranged in a subtidal zone. The plant barrier zone and the physical barrier zone can intercept bank slope sediment, and sediment deposition is prevented from affecting growth of oysters in the artificial reef body; and the stepped laying mode of the artificial reef body has an excellent wind and wave resisting effect, and therefore the oyster reef can be effectively and stably restored through the system and method.

Description

technical field [0001] The invention belongs to the field of ocean engineering, and in particular relates to a system for repairing oyster reefs and an ecological restoration method for oyster reefs. Background technique [0002] Oyster reef is a biological reef system formed by a large number of oysters growing on the surface of a hard substrate, which is widely distributed in temperate estuaries and coastal areas. Oyster reefs have important ecological functions in purifying water bodies, providing habitats, promoting fishery production, protecting biodiversity, and coupling ecosystem energy flow. However, due to the impact of human activities, a large number of naturally formed oyster reefs have been destroyed, and ecological engineering is urgently needed for restoration. [0003] The ecological restoration of oyster reefs usually adopts the method of constructing artificial reefs on a hard substrate suitable for the growth of oyster larvae. The artificial reef include...

AI Technical Summary

Problems solved by technology

Although the net protection device on the reef row frame can isolate the sediment to a certain extent, it is obviously not enough to intercept a large amount of sediment washed down from the sea wall, and the reef row is still easily covered by sediment, resulting in a large number of oyster deaths

[0006] In summary, the existing oyster reef restoration system and method are single, and are easily affected by sediment deposition, resulting in a large number of oyster deaths, and the artificial reef has weak wind and wave resistance, so it is not suitable for the ecological restoration of oyster reefs.

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