A Method for Ecological Restoration of Damaged Coastal Wetland

Abstract

The invention relates to an ecological restoration method for a damaged seacoast wetland, and belongs to the field of wetland vegetation recovery. The ecological restoration method comprises the following steps: (1) selecting a restoration area to carry out living condition research; (2) restoration of a sinking type erosive seacoast wetland: establishing a flood bank and a broken water peninsula, carrying out dredging mud covering, and establishing a tidal channel and a gentle slope; (3) building a wetland plant community, wherein wet plants comprise aquatic plant and halophilous plant, and sowing and trophosome transplanting combined planting; (4) establishing an ecological isolation belt: planting trees and shrubs and emergent aquatic plant in the peripheral range of 2 to 4 m in the wetland as the ecological isolation belt; (5) scientifically controlling the growth of Spartina alterniflora Loisel: controlling the growth of Spartina alterniflora Loisel via water quantity control, and manpower and machine harvesting and burying. Dredging mud is used for ecological restoration of the damaged seacoast wetland, the erosive seacoast wetland can be reinforced, the sediment is effectively stabilized via the construction of the wetland plant community, a diversified environment is created, and the ecological environment quality of the seacoast wetland is improved.

Description

technical field [0001] The invention belongs to the field of wetland vegetation restoration, and in particular relates to a method for ecological restoration of damaged coastal wetlands. Background technique [0002] As the ecotone of the two systems of sea and land, coastal wetlands have powerful ecological service functions, including water conservation, water supply slowdown, erosion control, back-up land resources, nutrient salt and pollutant decomposition, and habitat for aquatic and marsh organisms. land, breeding areas and migratory birds' wintering grounds, etc. [0003] In recent years, due to the intensification of human activities in the upper reaches of rivers and coastal areas, the sediment content in the estuary area has changed, which directly affects the erosion and deposition environment in the estuary area, resulting in the reduction of estuary wetland area and the degradation of its function. At the same time, with the implementation of nearshore projects...

AI Technical Summary

Problems solved by technology

At the same time, with the implementation of nearshore projects, especially large-scale reclamation projects, many coastal wetlands have been directly reclamated, the natural coastline has been continuously reduced, coastal wetlands have degraded, and coastal environmental carrying capacity has declined.

In addition, reclamation and other projects that significantly change the natural properties of the coast have caused changes in the near-shore hydrodynamic conditions. Some local sections of the coast have evolved into eroded sections of the coast, and the original coastal wetlands have further degraded.

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