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High tidal flat spartina alterniflora expansion control-salt marsh vegetation conservation fusion process

A technology of Spartina alterniflora and climax, applied in plant protection, horticulture, plant cultivation, etc., can solve the problems of high cost, achieve low cost, reduce water level frequency, and increase heterogeneity

Pending Publication Date: 2022-04-12
SHANGHAI WATERWAY ENG DESIGN & CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the cost of building hydrological control facilities such as cofferdams and sluices is too high

Method used

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  • High tidal flat spartina alterniflora expansion control-salt marsh vegetation conservation fusion process
  • High tidal flat spartina alterniflora expansion control-salt marsh vegetation conservation fusion process
  • High tidal flat spartina alterniflora expansion control-salt marsh vegetation conservation fusion process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A fusion process of controlling the expansion of Spartina alterniflora in high tidal flats and reed conservation, the specific methods include:

[0053] Step 1: In the first ten days of April, the aboveground part of S. alterniflora was mowed manually or mechanically according to the field operation conditions, and the stubble height was 8cm. According to the scale, Spartina alterniflora straw is selected for recycling or deep burial.

[0054] Step 2: Dig ditches according to the direction of the nearby tidal ditches. The distance between the ridges is about 4m, the width of the ridges is about 2m, the height of the ridges is about 50cm, and the length of the ridges is about 40m. Take soil to seal the end of the ditch at 2m, so as to maintain more than 30cm in the ditch. water level. Build earth dams parallel to the shoreline at intervals of 10m on the outside. The elevation of the top of the dam is parallel to the average spring tide high tide level, the width of the...

Embodiment 2

[0059] The integration process of the expansion control of Spartina alterniflora in Gaochao Beach and the conservation of Suaeda salsa includes the following steps:

[0060] Step 1: In mid-April, the aboveground part of S. alterniflora was mowed manually or mechanically according to the field operation conditions, and the stubble height was 10cm.

[0061] Step 2: Dig ditches according to the direction of the nearby tidal ditches. The distance between the ridges is about 4m, the width of the ridges is about 2m, the height of the ridges is about 50cm, and the length of the ridges is 30m. Take soil to seal the end of the ditch for 3m to maintain a water level of about 30cm in the ditch. . Build earth dams parallel to the shoreline at intervals of 10m on the outside. The elevation of the top of the dam is parallel to the average spring tide high tide level, the width of the dam is about 2m, and the length of the dam is about 30m.

[0062] Step 3: lay a shade net with a shading r...

Embodiment 3

[0066] A fusion process of Spartina alterniflora expansion control and vegetation conservation in high tidal flats, the specific methods include:

[0067] Step 1: In the first ten days of April, the aboveground part of S. alterniflora was mowed manually or mechanically according to the field operation conditions, and the stubble height was about 10cm.

[0068] Step 2: Dig ditches according to the direction of the nearby tidal ditches. The distance between the ridges is about 4m, the width of the ridges is about 2m, the height of the ridges is about 50cm, and the length of the ridges is 50m. Take soil to seal the end of the ditch for 3m to maintain the water level in the ditch above 30cm. . Build earth dams parallel to the shoreline at intervals of 10m on the outside. The elevation of the top of the dam is parallel to the average spring tide high tide level, the width of the dam is about 2m, and the length of the dam is about 30m.

[0069] Step 3: Lay a shade net with a shadi...

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Abstract

The invention belongs to the field of ecological engineering, and relates to a method and a process for expansion control of spartina alterniflora in a high tidal flat and conservation of vegetation in a salt marsh. The method comprises the following steps: cutting the grassland part of the spartina alterniflora in early spring; a ridge platform and a ditch are constructed, the ridge distance is 3-5 m, the ridge width is about 1.5-3 m, the ridge height is about 35-60 cm, the ridge length is 30-50 m, and soil is taken to seal the tail end of the ditch by 2-3 m so as to maintain the water level of 30 cm or above in the ditch; high tidal flat plants are planted on the ridges; in the flowering period of the spartina alterniflora, the shading net or the whole appliance is removed, and the recurrent spartina alterniflora is cut; after the spartina alterniflora wither, the ditch seal is opened, and the spartina alterniflora is cleaned and plants are planted in the ditch in the early spring of the next year. According to the method, foreign species can be well controlled, meanwhile, the survival rate of salt marsh vegetation is increased, ditches and ridges can be rapidly and conveniently formed with the help of related devices, and the cost is relatively low.

Description

technical field [0001] The invention belongs to the field of ecological engineering and relates to a method for controlling the expansion of Spartina alterniflora in high tidal beaches. Background technique [0002] Spartina alterniflora was introduced into my country in 1979 in order to promote land reclamation and improve the beach environment. After years of artificial introduction and natural succession, Spartina alterniflora has become the most widely distributed salt marsh vegetation in China's coastal tidal flats. At the same time, its rapid and disorderly expansion led to a rapid reduction in the distribution area of ​​indigenous plant populations, the loss of suitable habitats for benthic animals, and a significant reduction in the population of water birds. In 2003, it was included in the list of the first batch of invasive alien species in my country. [0003] Currently, Spartina alterniflora can be managed in various ways. Among them, "cutting + flooding + bio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/00A01G22/00A01B79/02
Inventor 吴创收戴禹航张妙田鹏李蕙蔡文杰
Owner SHANGHAI WATERWAY ENG DESIGN & CONSULTING CO LTD
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