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Repair method of suaeda salsa in coastal wetlands

A technology of Suaeda salsa and a restoration method, which is applied in the field of restoration of Suaeda salsa in coastal wetlands, can solve the problems of insufficient upstream water, difficult to implement on a large scale, poor effect, etc., so as to improve biological connectivity and prevent sea ice. Erosion and improvement of living environment

Active Publication Date: 2020-08-14
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in some areas of the Yellow River Delta, water diversion from the Yellow River is used to restore and improve the degraded Suaeda saline salsa wetland by the method of light pressure and salt, and some results have been achieved. However, due to the shortage of regional fresh water resources and insufficient upstream water, it is difficult to implement it on a large scale.
There is also the addition of some chemical amendments to improve the salinity of the soil to restore Suaeda salsa, but the use of large doses will cause soil compaction
However, biological methods such as transplanting are used for ecological restoration of the heavily degraded Suaeda salsa wetlands, and the effect is slow and the effect is not good.

Method used

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  • Repair method of suaeda salsa in coastal wetlands
  • Repair method of suaeda salsa in coastal wetlands
  • Repair method of suaeda salsa in coastal wetlands

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Experimental program
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Effect test

Embodiment 1

[0031] This embodiment provides a repair method for Suaeda saline in coastal wetlands. A grid is set on the coastal wetlands, and the grid is woven from wetland grasses; the grid is composed of several transverse dividing devices and The longitudinal dividing device is arranged vertically and intersecting. Several square grid units are formed inside the grid. The grid units are equipped with pit micro-terrains arranged in a quincunx shape to enhance the hydrological and biological connectivity of the restoration area. The grid is set in the bare spot area and the degraded area of ​​the Suaeda salsa wetland in the intertidal zone. The laying time of the grid is from mid-November to mid-December every year. Suaeda salsa grows in the grid unit.

[0032] The grid of this embodiment is a shallow grid, such as figure 2 As shown, the shallow grid is spliced ​​by several cylindrical or columnar grid strips 5, and the grid strips 5 form the horizontal division device and the vertica...

Embodiment 2

[0036]The difference between this embodiment and Embodiment 1 is that the shallow grid described in this embodiment is arranged on the middle tidal flat, and each grid unit in the middle tidal flat is 50-60cm long, 50-60cm wide, and the diameter of the grid bar is 5-8cm , In this embodiment, each grid unit is 55cm long, 53cm wide, and the grid bar has a diameter of 7cm. The wetland gramineous herbaceous plant is reed. The diameter of the middle tidal flat hole is 10-15cm, and the depth is 8-10cm. In this embodiment, the diameter of the tidal flat hole is 13cm, and the depth is 9cm.

Embodiment 3

[0038] The difference between this embodiment and Embodiment 1 is that the shallow grid described in this embodiment is arranged on the low tidal flat, each grid unit is 25-35cm long, 25-35cm wide, and the grid bar diameter is 3-5cm. In the embodiment, each grid unit has a length of 35 cm, a width of 25 cm, and a grid bar diameter of 4 cm. In the present embodiment, the diameter of the low-tide beach pothole is 5 cm, and the depth is 5 cm. The wetland gramineous herbaceous plant is Spartina alterniflora. Compared with reed plants, Spartina alterniflora has a higher degree of lignification, stronger toughness, salt and flood resistance, and resistance to wind and waves. Its manifestations are: ⑴ destroying the habitat of offshore organisms and affecting tidal flat farming; ⑵ blocking waterways and affecting ships leaving the port; ⑶ affecting seawater exchange capacity, leading to a decline in water quality and inducing red tides; ⑷ ​​threatening the local coastal ecosystem, r...

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Abstract

The invention relates to a repair method of suaeda salsa in coastal wetlands. Grilles are arranged on a coastal wetland and woven by wetland gramineous herbs; the grilles are formed by multiple horizontal dividing devices and longitudinal dividing devices in vertical crossing arrangement; multiple square grid cells are formed inside the grilles; and pothole micro-topographies in plum blossom arrangement are arranged in the grid cells. The living environment of suaeda salsa can be improved by combining the grilles and the pothole micro-topography repair.

Description

technical field [0001] The invention relates to a restoration method of Suaeda salsa in coastal wetlands. Background technique [0002] The coastal wetland of the Yellow River Delta is the most complete, vast and young wetland ecosystem in the warm temperate zone of my country. It is also an important transfer station for bird migration, wintering habitat and breeding ground, with rich biodiversity. Due to its special geographical location and land-forming factors, the newly formed land has a short soil-forming history, a low degree of maturation, low soil nutrients but extremely high salinity, and a serious degree of salinization. Suaeda salsa is a dominant species in the coastal wetlands of the Yellow River Delta. Suaeda salsa has ecological functions such as water and soil conservation, habitat provision, and pollution purification. In recent years, under the dual impact of high-intensity land reclamation activities such as farmland reclamation and port construction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G22/00A01G9/029E02D3/00
CPCA01B79/02A01G22/00A01G9/0293A01G9/0295A01G9/0291E02D3/00E02D3/005Y02A40/22
Inventor 白军红关亚楠王伟王大伟马旭张光亮
Owner BEIJING NORMAL UNIVERSITY
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