Coastal wetland and realizing method thereof

Abstract

The invention provides a coastal wetland and a realizing method thereof. A first water diversion pipe used for receiving seawater is buried in a nearshore wetland, the water inlet end of the first water diversion pipe is immerged into the seawater, the water outlet end of the first water diversion pipe extends to land and is connected with one side wall of a first water storage device buried in the nearshore wetland, and the other side wall of the first water storage device is connected with a second water storage device through a second water diversion device, wherein the second water storagedevice is buried in the nearshore wetland; and a plurality of permeating holes are formed in each of the first water storage device and the second water storage device, and the first water storage device and the second water storage device are both used for storing the seawater, and the seawater permeates outwards to be supplied. The pressure of the seawater can be fully utilized for water storage, meanwhile, the stored seawater is supplemented and supplied to the position below a shallow surface layer of the coastal wetland, thus the water and soil loss is reduced, and the integrity of an ecological system is ensured.

Description

technical field [0001] The invention relates to a coastal wetland and a realization method thereof, belonging to the field of environmental science and technology. Background technique [0002] In recent years, due to the intensification of human activities in the upper reaches of the river 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 the area of ​​the estuary wetland and the degradation of its function. 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 the coastal environmental carrying capacity has declined. In addition, reclamation and other projects that significantly change the natural attributes of the coast have caused changes in t...

AI Technical Summary

Problems solved by technology

[0004] my country has an area of ​​500m 2 There are more than 6,500 islands above, most of which are less than 99km in area 2 The lack of fresh water resources not only makes the terrestrial ecosystems of these islands extremely fragile, but also seriously affects their development and utilization.

Precipitation is the only way for islands to obtain natural freshwater supplements. However, due to the small area of ​​accumulated water, the poor water retention capacity of surface vegetation and soil, most of the rainwater flows into the sea in the form of runoff during precipitation, resulting in extremely undeveloped freshwater wetlands on islands and low biodiversity. , the ecological carrying capacity is small

[0005] The abandoned farmland on the island has been degraded into a swamp due to unmanaged management, and some intermittent streams have also silted up and narrowed, reducing their water storage capacity

The result of island wetland degradation is that a large amount of freshwater flows into the sea during the rainy season, and cannot provide the amount of water required for the stability of the wetland ecosystem during the dry season.

In order to solve the problem of insufficient fresh water resources on the island, someone once built a reservoir on the island and hardened many ponds and ditches. Achieve water retention goals

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