Method for restoring mangroves on beach in shrimp pond drain outlet area

A technology for sewage outfalls and mangroves, applied in the field of ecological protection, can solve problems such as difficult restoration and poor growth of mangroves, and achieve the effects of restoring self-purification ability, improving biodiversity and ecosystem stability.

Active Publication Date: 2019-04-09
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem that mangroves do not grow well or are difficult to restore on the tidal flats in the area of ​​the sewage outfall of the shrimp pond, the pre...

Method used

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  • Method for restoring mangroves on beach in shrimp pond drain outlet area
  • Method for restoring mangroves on beach in shrimp pond drain outlet area
  • Method for restoring mangroves on beach in shrimp pond drain outlet area

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Effect test

Embodiment 1

[0061] 1. Preliminary preparation:

[0062] 1.1 In the early stage, the inventor conducted mangrove plant individual ecology and community ecology investigations, hydrology and water ecological environmental pollution monitoring research in Dongzhai Port, Hainan Province, which lasted for many years, and evaluated the changes or pressures of hydrology on this basis Effects of increasing factors on mangrove restoration.

[0063] The monitoring results show that the difficulty and effect of mangrove restoration in this area are positively correlated with the distance from the sewage outlet of the shrimp pond. Further monitoring found that the acidity of the mangrove soil and the content of available phosphorus are closely related to the distance from the tidal ditch drained by the shrimp farm. The mangrove surface soil near the gate of the shrimp pond drainage tidal channel (for example, 1cm to 50cm of the mangrove hard-to-recovery area of ​​each outlet) usually has a pH value ...

Embodiment 2

[0081] Also in Hainan Dongzhaigang Mangrove Nature Reserve, in the adjacent position of the same shrimp pond sewage outfall area, adopt the method basically the same as embodiment 1 to carry out, the difference is that the depth of digging is 0.70m, and airing The tidal erosion time is 20 days in total, and the large tidal trench (namely the first-level tidal trench) with tidal changes in the afforestation area is opened, and the width of the tidal trench is 5m.

Embodiment 3

[0083] Also in Hainan Dongzhaigang Mangrove Nature Reserve, using the same method as in Example 1, after determining the mangrove planting type and hydrological conditions, mangroves are planted on the beach of the trench coast with relatively small wind and waves. It is 2.0m×2.0m.

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Abstract

The invention relates to a method for restoring mangroves on a beach in a shrimp pond drain outlet area. The method comprises the steps as follows: (1) improving the pH value of soil of the beach in the shrimp pond drain outlet area and relieving the acidification degree of the soil by tide scouring; (2) raising the shrimp pond drain outlet area to form a slope beach face with gradually increasedbeach face elevation in the tide rising direction; (3) planting the mangroves on the slope beach face and applying phosphate fertilizer to rhizosphere soil of the mangroves. By means of the method, the bad soil condition of the shrimp pond drain outlet area can be improved, the degeneration process of the mangroves can be quickly retarded and controlled, the problem that the mangroves cannot survive or grow slowly in a long time in the area is solved, and the mangrove resources is protected and restored.

Description

technical field [0001] The invention belongs to the technical field of ecological protection, and in particular relates to a method for restoring the mangroves on the tidal flats in the sewage outlet area of ​​shrimp ponds. Background technique [0002] Mangroves (mangroves) refer to the tidal flat wetland woody biome composed of evergreen shrubs or trees that grow in the upper part of the coastal intertidal zone in tropical and subtropical regions and are flooded by periodic tides. It grows in tidal flats and shoals at the junction of land and sea, and is a special ecosystem transitioning from land to sea. It has the functions of flood prevention, wave prevention, storm prevention and embankment protection, also known as "ocean guard", and is an irreplaceable coastal green barrier. Mangroves also have unique ecological, social and economic benefits in maintaining the balance of carbon and oxygen in the atmosphere, purifying the air and water environment, greening, beautify...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01B79/02
CPCA01B79/02A01G17/005
Inventor 杨玉楠王瑶
Owner BEIHANG UNIV
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