Device for preventing relapse of spartina alterniflora by utilizing tidal energy

Abstract

The utility model discloses a device for preventing relapse of spartina alterniflora by utilizing tidal energy. The device comprises an intercepting net, a foam floating rod and an anchoring device, the end, facing the seawall, of the intercepting net is fixed to the mud flat through the anchoring device, and the end, facing the sea area, of the intercepting net is connected with the foam floating rod. Through the design of the intercepting net and the foam floating rod, germination and rooting of the spartina alterniflora can be restrained through natural changes of tide, photosynthesis of the spartina alterniflora is reduced, root systems of seedlings are loosened along with flushing of tide water, the survival rate of the seedlings is reduced, and therefore relapse of the spartina alterniflora is effectively restrained. The cost and the workload for preventing and treating relapse of the spartina alterniflora can be obviously reduced, and the application prospect is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of ecological restoration, in particular to a device that utilizes tidal energy to prevent the recurrence of Spartina alterniflora. Background Art

[0002] Spartina alterniflora is an invasive plant with strong reproductive capacity and adaptability. It is widely distributed in coastal mudflats and poses a serious threat to the balance of local ecosystems. Current prevention and control methods focus on physical and biological control, but most are unable to completely prevent its recurrence, especially in mudflats with significant tidal influence.

[0003] Chinese invention patent application CN 117678447A discloses a method for controlling Spartina alterniflora by shading and mulching. The method involves mowing the grass, zoning the areas, and then covering them with a light-blocking film for at least 75 days. However, due to the complex mudflat environment and the susceptibility of the film to damage, this method is difficult to implement, with high maintenance costs.

[0004] Chinese invention patent application CN 101176442A discloses a method for controlling Spartina alterniflora using an integrated mowing and water-level regulation technology. This method primarily suppresses the growth of Spartina alterniflora through a combined mowing and water-level regulation approach. However, this invention requires the construction of cofferdams, which are easily destroyed by tidal currents on mudflats, resulting in high construction costs and subsequent maintenance costs, making implementation difficult.

[0005] To this end, the present invention proposes a device that uses tidal energy to prevent the recurrence of Spartina alterniflora. By intercepting the seeds and seedlings of Spartina alterniflora and interfering with its growth during tidal fluctuations, the device is simple to implement and has low maintenance costs, and can effectively reduce the germination rate and recurrence rate of Spartina alterniflora. Utility Model Content

[0006] The utility model provides a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy, thereby solving the problem that Spartina alterniflora is difficult to control and easy to recur in coastal mudflat areas.

[0007] In order to solve the above technical problems, the utility model provides a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy, comprising: an interception net, a foam float and an anchoring device;

[0008] One end of the interception net facing the seawall is fixed on the mudflat through the anchoring device, and one end of the interception net facing the sea area is connected to the foam float.

[0009] In a preferred embodiment of the present invention, the anchoring device is an anchoring nail with a length of 50 cm.

[0010] In a preferred embodiment of the present invention, the aperture of the interception net is 1-2 mm.

[0011] In a preferred embodiment of the present invention, the interception net has a width of 10m and a length of 10m.

[0012] In a preferred embodiment of the present invention, the length of the foam float is the same as the width of the interception net.

[0013] In a preferred embodiment of the present invention, the diameter of the foam float rod is 10 cm.

[0014] In a preferred embodiment of the present invention, the foam float bar is fixed on top of the interception net.

[0015] The beneficial effects of the utility model are as follows: the utility model is a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy. Through the design of the interception net and the foam float rod, the natural changes of the tide can be utilized to inhibit the germination and rooting of Spartina alterniflora, reduce its photosynthesis, and loosen the roots of the seedlings as the tide washes away, reducing their survival rate, thereby effectively inhibiting the recurrence of Spartina alterniflora. The utility model is highly efficient and environmentally friendly, can significantly reduce the cost and workload of preventing and controlling the recurrence of Spartina alterniflora, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy in the present invention;

[0017] Figure 2 This is a schematic structural diagram of a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy in the utility model when it is at a high tide level;

[0018] Figure 3 This is a schematic structural diagram of a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy in the utility model when the device is at a low tide level;

[0019] The markings of the components in the accompanying drawings are as follows:

[0020] 10. Interception net; 20. Foam float; 30. Anchoring device. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0022] The utility model discloses a device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy, comprising an interception net 10, a foam float rod 20 and an anchoring device 30.

[0023] The interception net 10 is a polyethylene mesh material with a pore size of 1-2 mm. This pore size design does not affect the permeability of seawater, and can effectively intercept Spartina alterniflora seeds and smaller plant fragments to prevent them from entering the mudflat area. The interception net is 10m wide and 10m long.

[0024] The end of the intercepting net 10 facing the seawall is fixed on the mudflat through the anchoring device 30 , and the end facing the sea area is connected to the foam float 20 .

[0025] Specifically, the interception net 10 is fixed on the mudflat where the Spartina alterniflora grows between the mid-tide level and the low-tide level by the anchoring device 30 .

[0026] Specifically, the foam float 20 is arranged along the width of the interception net 10 and is located above the interception net 10, ensuring that the foam float 20 can float at high tide and drive the interception net 10 to move toward the side of the seawall to intercept the remains and seeds of the alien Spartina alterniflora; during the water level drop, the foam float 20 can drive the interception net 10 to move toward the side of the sea area and sink as the seawater on the mudflat decreases, so that the interception net 10 is gradually spread out and covered on the germination area of ​​Spartina alterniflora on the surface of the mudflat. At this time, the presence of the interception net can interfere with the growth environment of the seedlings, reduce their photosynthesis, and with the flushing of the tide, loosen the roots of the seedlings, reduce their survival rate, thereby greatly reducing the seed germination rate and recurrence rate of Spartina alterniflora, and reducing the need for manual management.

[0027] Specifically, the length of the foam float 20 is the same as the width of the interception net 10, and its diameter is 10 cm.

[0028] The working principle of the device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy is as follows:

[0029] like Figure 2 As shown, at high tide, the foam float 20 and the interception net 10 float on the surface of the mudflat as the water level rises, intercepting the remains and seeds of the alien Spartina alterniflora and preventing it from taking root and sprouting on the mudflat.

[0030] As the water level gradually drops, the foam float 20 sinks, and the interception net 10 gradually adheres to the surface of the mudflat, covering the germination area of ​​Spartina alterniflora. Figure 3 At this time, the presence of the interception net 10 can interfere with the growth environment of the Spartina alterniflora seedlings, reduce their photosynthesis, and with the erosion of the tide, loosen the seedling roots and reduce their survival rate.

[0031] At low tide, the interception net 10 moves gradually toward the low tide zone as the tide fluctuates, and can also remove the Spartina alterniflora seedlings whose root systems are not stable enough from the soil, effectively reducing the chance of them taking root on the mudflats.

[0032] Example 1

[0033] In the Spartina alterniflora control experiment carried out in Dongtai area, the above device was installed, wherein the interception net 10 was 10m long, 10m wide, with a mesh diameter of 1mm, and the diameter of the foam float 20 was 10cm.

[0034] Compared with the surrounding areas where the device was not installed, the germination rate of Spartina alterniflora in the area where the device was installed was reduced by about 98%, the recurrence was significantly reduced, and the management intensity was greatly reduced.

[0035] Example 2

[0036] A similar experiment was conducted in a mudflat area in Dafeng, where tidal energy is relatively weak. The interception net 10 had a length of 10 m, a width of 10 m, a mesh diameter of 2 mm, and a foam float 20 had a diameter of 10 cm.

[0037] Compared to surrounding areas without the device, the device reduced the recurrence of Spartina alterniflora by approximately 91%. Despite the region's small tidal range and weak tidal energy, the device still had a modest effect on suppressing the recurrence of Spartina alterniflora.

[0038] The device of the present utility model does not require external energy support, can effectively utilize tidal energy, and naturally interferes with the recurrence of Spartina alterniflora through the natural ebb and flow process, effectively intercepting foreign Spartina alterniflora seeds and residues, inhibiting the germination of Spartina alterniflora seeds and the rooting of seedlings, and suppressing the germinating seedlings during the ebb and flow of the tide, reducing the need for manual management. The device has the advantages of being simple, efficient, and having a wide range of applications, does not require energy consumption, and has the advantages of low installation and maintenance costs. It can significantly reduce the recurrence rate of Spartina alterniflora and reduce manual management input. It is suitable for the control of Spartina alterniflora on large areas of coastal mudflats, and is particularly suitable for mudflats with significant tidal changes.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy, characterized in that: include: Interception nets, foam booms, and anchoring devices; One end of the interception net facing the seawall is fixed on the mudflat through the anchoring device, and one end of the interception net facing the sea area is connected to the foam float.

2. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 1, characterized in that: The anchoring device is an anchoring nail with a length of 50 cm.

3. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 1, characterized in that: The pore size of the intercepting net is 1-2 mm and the material is polyethylene.

4. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 3, characterized in that: The width of the interception net is 10m and the length is 10m.

5. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 4, characterized in that: The length of the foam float bar is the same as the width of the interception net.

6. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 5, characterized in that: The diameter of the foam float rod is 10 cm.

7. The device for preventing the recurrence of Spartina alterniflora by utilizing tidal energy according to claim 6, characterized in that: The foam float bar is fixed on the top of the interception net.

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