A light beach grass planting device and fish reef device and installation method thereof

Abstract

The application provides a light beach grass planter and fish reef device, which comprises a bamboo cylinder and a grass blanket sleeved on the periphery of the bamboo cylinder. The bamboo cylinder comprises a cavity section, a filling section and an insertion section which are sequentially communicated from top to bottom. The cavity section is open at the top and a plurality of holes are arranged on the side wall. The filling section is filled with planting soil. The bottom of the insertion section is V-shaped. The grass blanket is arranged at the joint of the filling section and the insertion section. The application also provides a mounting method of the light beach grass planter and fish reef device. The planter and the fish reef are combined by the bamboo cylinder and the grass blanket, which can provide the planting and growing space of aquatic plants and provide the suitable benthic environment and food source for benthic organisms.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water ecological restoration, and particularly relates to a light beach seagrass planter and fish reef device and a mounting method thereof. BACKGROUND

[0002] In recent years, due to the discharge of land-based pollutants and a large amount of suspended sediment generated by nearshore engineering, natural wetlands are gradually decreasing, and the “vegetation” of part of the coastal beach is rapidly disappearing. At the same time, due to the continuous accumulation of sediment at the estuary, part of the beach is becoming a piece of “desert”. For example, the coastal zone around Hainan Island and Beihai, Guangxi, the seagrass bed is rapidly disappearing, and the seabed is becoming a “desert”. The light beach at the estuary of the river also needs to be restored urgently, for example, there are hundreds of square kilometers of light beach without any vegetation on Hengsha Island in the Yangtze River Estuary, which has shown a typical seabed “desert” scene, and many fish and aquatic organisms have lost their habitats, and the biodiversity is seriously insufficient.

[0003] The most effective way to restore such a light beach is to artificially plant seagrass. Seagrass is a natural ecological barrier of the coastal zone, and a seagrass bed growing in patches can reduce wave energy and water flow energy, maintain the stability of the seabed, and play an important role in consolidating the seabed substrate and maintaining the shoreline. However, it is difficult to plant aquatic plants on the light beach, and the seeds will be quickly washed away by the tide. In addition, the seeds and seedlings are difficult to grow directly in the sand. The large waves in the sea area bring a large amount of suspended sediment into the seagrass restoration area, and the short seagrass and sea rush are easily buried by the debris, with a low survival rate. For example, in the open waters of Gaolong Bay on the east coast of Hainan Island, a “seabed soil grid” is used, that is, an iron sheet is used to fix the planting grid size, and at the same time, a fishing net is pressed to make it able to hold loose bottom material, so as to slow down the microenvironment water flow, settle suspended solids, and capture nutrients, thereby achieving the purpose of stabilizing the bottom material and fixing the seagrass plants. However, this method is not convenient to operate underwater, and the grid is difficult to completely fix the planting soil and seagrass, resulting in a low survival rate of seagrass. Other existing methods also have the defects of large labor consumption, high material consumption, lack of environmental protection, and unstable component fixation.

[0004] In summary, the existing light beach needs water ecological restoration technology to address the problem of desertification in marine waters, so as to provide habitat for various food chain bottom feeders. How to artificially plant seagrass to improve the ecology of the light beach requires innovative ecological restoration methods. SUMMARY

[0005] In view of the above defects, the purpose of the present application is to provide a seagrass planter and fish reef device which can provide a planting bed for seagrass on the light beach and also provide a habitat for plankton and benthic organisms.

[0006] The application provides a light beach seaweed planter and fish reef device, which comprises a bamboo cylinder and a grass blanket sleeved on the outer periphery of the bamboo cylinder, the bamboo cylinder comprises a cavity section, a filling section and an insertion section which are sequentially communicated from top to bottom, the cavity section provides a growth space for aquatic plants, the top of the cavity section is open, and a plurality of holes are arranged on the side wall; the filling section is used for planting the aquatic plants, and is filled with planting soil; the insertion section is V-shaped at the bottom and is used for inserting into a sand layer; and the grass blanket is arranged at the joint of the filling section and the insertion section.

[0007] Preferably, the top of the cavity section is further provided with a buoyancy ring.

[0008] Preferably, the buoyancy ring is made of an EPS plate.

[0009] Preferably, the grass blanket is woven by plant fibers.

[0010] Preferably, two groups of reserved holes are further formed in the outer wall of the bamboo cylinder, the two groups of reserved holes are arranged at the joint of the filling section and the insertion section, one crosspiece extending radially along the filling section is arranged in each group of reserved holes, and a grass pad is arranged on the crosspiece.

[0011] Preferably, a groove is further formed in the outer wall of the bamboo cylinder, the groove is arranged at the joint of the filling section and the insertion section, the inner side of the grass blanket is upwardly folded to form a flange, and the flange is fixed in the groove by being tied with a rope.

[0012] Preferably, the thickness of the grass blanket is 20-100 mm.

[0013] Preferably, the outer wall of the grass blanket and the filling section is connected by a cable.

[0014] Preferably, the bamboo cylinder is made of a bamboo.

[0015] The application further provides an installation method of the aforementioned light beach seaweed planter and fish reef device, which comprises the following steps:

[0016] S1: transporting the assembled planter to a designated water area by a ship, keeping the planter in a vertical state on the ship, filling the planting soil into the filling section, and mixing the seeds of aquatic plants into the upper layer of the planting soil;

[0017] S2: throwing the vertical planter from the side of the ship to a designated position, sinking the planter to the beach surface of the light beach, and gradually inserting the planter into the sand layer under the action of gravity and tidal current.

[0018] The advantage of this invention lies in its integration of a planter and artificial reef by combining a bamboo tube with a grass mat. This provides both a growing space for aquatic plants and a suitable benthic environment and food source for benthic organisms. The device has a simple structure, utilizing the principle of a self-righting toy, where the center of gravity is always below the center of buoyancy, ensuring the bamboo tube remains vertical in the water. Based on the fundamental principle of sand vibration for pile formation, the device uses the reciprocating force of the tides to continuously shake the bamboo tube, helping it to gradually embed itself into the sand layer. This device is easy to manufacture and assemble, safe and reliable to use, and environmentally friendly, effectively solving the problem of planting aquatic plants on bare beaches. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the seaweed planter / artificial reef device of the present invention;

[0020] Figure 2 This is a schematic diagram of the bamboo tube structure;

[0021] Figure 3 This is a top view of the seaweed planter / artificial reef device of the present invention.

[0022] Figure 4 This is a schematic diagram illustrating the application of the seaweed planter / artificial reef device of the present invention.

[0023] Figure 5 This is a schematic diagram of the insertion segment being inserted into the sand layer.

[0024] Component designation explanation:

[0025] 1. Bamboo tube body

[0026] 11. Hollow segment

[0027] 111 holes

[0028] 12 Filling Section

[0029] 13 Inserted paragraph

[0030] 14 Grooves

[0031] 15 Reserved holes

[0032] 2. Buoyancy ring

[0033] 3. Planting soil

[0034] 41. Ring 1

[0035] 42. Ring II

[0036] 43 Cables

[0037] 51. Crossbar

[0038] 52 Straw Mats

[0039] 6 turf

[0040] 61 fan unit

[0041] 62 reinforcing rib

[0042] 7 aquatic plant

[0043] 8 sand layer

[0044] 81 beach

[0045] G gravity

[0046] F buoyancy DETAILED DESCRIPTION

[0047] The specific embodiments of the present application will be further described in details below with reference to the drawings. These embodiments are only used to illustrate the present application, and are not intended to limit the present application.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "vertical", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] As Figure 1 and Figure 4As shown, the present application provides a light beach grass planter and fish reef device, which comprises a bamboo cylinder body 1 and a grass blanket 6 sleeved on the outer periphery of the bamboo cylinder body 1. The bamboo cylinder body 1 comprises a cavity section 11, a filling section 12 and an insertion section 13 which are sequentially communicated from top to bottom. The cavity section 11 provides a growth space for aquatic plants 7, the top of which is open, and a plurality of holes 111 are arranged on the side wall, the aquatic plants 7 (such as seaweed) will grow in the holes 111 or the open top of the cavity section 11, and then sway in the larger water area; the filling section 12 is filled with planting soil 3 for planting aquatic plants 7; the insertion section 13 is used for inserting into the sand layer 8 below the light beach surface 81 to fix the planter in the light beach. The grass blanket 6 woven by plant fibers is in the shape of a ring, which is centered on the bamboo cylinder body 1 and arranged at the junction of the filling section 12 and the insertion section 13. The grass blanket 6 mainly plays three roles: first, in the process of arranging the planter, the bamboo cylinder body 1 is kept in a vertical posture and stably lowered by using the buoyancy; second, it provides an anti-overturning force to prevent the bamboo cylinder body 1 from being excessively inclined under the action of waves; third, after the insertion section 13 is inserted into the sand layer 8, the grass blanket 6 adheres to the beach surface 81 around the bamboo cylinder body 1 like a suction cup, tightly holding the sand layer 8, which can prevent the sand layer 8 around the bamboo cylinder body 1 from being washed away by the tide, provide support for the bamboo cylinder body 1, ensure that the bamboo cylinder body 1 stands stably in the light beach, and provide a good growth environment for the aquatic plants 7. Therefore, the present application provides a planter for aquatic plants 7 by combining the bamboo cylinder body 1 and the grass blanket 6, allowing the grass seeds to germinate and grow in the bamboo cylinder cavity, until they grow out of the bamboo cylinder body 1 or float in the water or wind around the bamboo cylinder body 1, thereby providing habitat, breeding and growth space for plankton and benthic organisms, forming a fish reef. The plant fibers of the bamboo cylinder body 1 and the grass blanket 6 have affinity, which provides habitat for plankton and a biological chain for fish. After several years, the bamboo cylinder body 1 and the grass blanket 6 slowly rot, and the aquatic plants 7 have already grown into a piece of grass, the bamboo cylinder body 1 and the grass blanket 6 still provide nutrients for plants and habitat and food source for plankton even if they are rotten.

[0051] China has abundant bamboo resources, and bamboo has the characteristics of low cost, renewable, and self-degradable. In addition, bamboo is natural in material, has good biological affinity, and is very suitable as a planter. For example, Figure 1 and Figure 2 As shown, the bamboo cylinder body 1 can be made of bamboo species such as Phyllostachys pubescens, Phyllostachys rigida, Phyllostachys nuda and Phyllostachys purpurea, and the present application preferably uses Phyllostachys pubescens. Phyllostachys pubescens is abundant in resources, natural in material, has a large amount of microbial phospholipid content and dehydrogenase activity attached to its surface, can provide space for microbial attachment and growth, can continuously promote the degradation of water pollutants, and is particularly suitable for aquatic organisms to inhabit. Phyllostachys pubescens can be decomposed in seawater for more than ten years, is naturally pollution-free, can form lignin during decomposition, will not damage the environment, and can continue to provide nutrients for aquatic plants and aquatic animals.

[0052] When making the bamboo tube body 1, cut a section from a single bamboo stalk according to the designed length of the bamboo tube body 1, and then remove the nodes to form a straight cavity. Next, use the thinner end of each bamboo section as the insertion section 13 of the bamboo tube body 1, and the thicker end as the cavity section 11, ensuring the thicker end is on top and the thinner end is on the bottom. This ensures that after the bamboo tube body 1 is filled with planting soil 3, it will... Figure 5 As shown, the center of buoyancy F is always above the center of gravity G, thus keeping the bamboo tube 1 in a vertical position in the water. Here, "vertical" means that the hollow section 11, the soil-filled section 12, and the insertion section 13 are distributed from top to bottom. Even if the bamboo tube 1 tilts under the influence of the current, because the center of buoyancy is above the center of gravity, it returns to its normal state after the tilting force disappears under the influence of buoyancy. Under the influence of the ocean current, the bamboo tube 1 sways continuously like a roly-poly toy, the insertion section 13 loosens the sand, and the planter gradually sinks under the influence of gravity and the current until the insertion section 13 is completely embedded in the sand layer 8, reaching equilibrium under the resistance of the grass mat 6 and the reaction force of the sand layer 8. The entire process requires no manual control and no power. The bamboo tube can be cut to the required length, with no waste or spoilage.

[0053] Preferably, the weight G of the bamboo tube 1 is not less than twice the buoyancy F, so that the insertion section 13 can be vertically driven into the sand layer 8 under the action of gravity.

[0054] In one specific embodiment of the present invention, the length of the bamboo tube 1 can be 5.0 to 8.0 times its diameter, its average diameter is preferably greater than 120 mm, and its length is preferably 800 to 1000 mm, wherein the length of the insertion section 13 is not less than 200 mm. Figure 1 and Figure 2 As shown, the insertion section 13 includes a flat top portion and a V-shaped bottom portion, wherein the V-shaped portion is formed by cutting two opposing bevels on the initial cylinder. The two bevels cause the width of the insertion section 13 to gradually decrease from top to bottom, forming a pointed tip that facilitates insertion into the sand layer 8. The angle between the bevels and the vertical direction can be determined based on the outer diameter of the insertion section 13, and the length of the bevels is preferably 150 mm.

[0055] like Figure 1 , Figure 2 and Figure 4As shown, two groups of reserved holes 15 are arranged at the joint of the outer wall of the bamboo tube body 1, the filling section 12 and the insertion section 13, each group of reserved holes 15 including two reserved holes 15 oppositely arranged on the outer wall of the bamboo tube body 1, wherein a crosspiece 51 extending radially along the filling section 12 is arranged in the two reserved holes 15, and a grass mat 52 is arranged on the two crosspieces 51. The width of the reserved hole 15 is not greater than 10 mm, and the height is 5 mm. The grass mat 52 is a multi-layer structure woven by grass, which can prevent the planting soil 3 from leaking out of the filling section 12, and also can allow the root system of the aquatic plant 7 to pass through and grow out of the gap of the insertion section 13 and root in the sand layer 8. In order to facilitate the initial growth of the aquatic plant 7, the thickness of the planting soil 3 is not less than 200 mm. The planting soil 3 is specifically a mixture of plant debris and soil, and the volume ratio of the two is preferably 1:1, which can increase nutrition and be beneficial to the expansion of the plant root system. The planting soil 3 is in a dry or semi-dry state, which is poured into the filling section 12 from the open top of the bamboo tube body 1, and the seeds of the aquatic plant are mixed in the upper layer of the planting soil to allow the seeds to germinate naturally. The type of aquatic plant 7 is preferably selected according to different sea areas, for example, Acorus calamus and Scirpus mariqueter are suitable for the light beach of Hengsha Island in Shanghai. The root system of the plant can penetrate the grass mat 52 and slowly grow into the sand layer 8. With the growth of the plant, the gradually developed root system of the plant combines the planting device and the light beach organically and continuously expands outward, forming newly grown plants outside the planting device, which provides a suitable benthic habitat and food source for benthic organisms from point to plane.

[0056] When the hole 111 is opened on the side wall of the cavity section 11, in order to avoid cracking of the bamboo cylinder 1 caused by punching, a small hole is preferably first punched as a pilot hole, and then the small hole is expanded into a large hole after the stress is released. Preferably, a buoyancy ring 2 is further provided at the top opening of the cavity section 11, and the buoyancy ring 2 has the following functions: first, it provides buoyancy to improve the buoyancy center of the bamboo cylinder 1, so that the bamboo cylinder 1 can always stand vertically in the water; second, it serves as a tightening ring of the bamboo cylinder 1, which can help to maintain the integrity of the bamboo cylinder 1 even if it cracks. The buoyancy ring 2 is specifically made of a circular ring of foamed plastic, such as an EPS foamed board, which is then sleeved on the top of the cavity section 11. The EPS foamed board is a lightweight material with the advantages of small water absorption, corrosion resistance, frost resistance, oxidation resistance, and ultraviolet resistance. It is not eroded by seawater, chemicals, oil stains, and aquatic organisms. It has the characteristics of environmental friendliness, light weight, and high mechanical strength. Its service life is at least 10 years or more, and it almost does not need any maintenance and repair costs except for strong natural forces and improper use. Considering that the outer diameter of the top of the bamboo cylinder 1 is not a fixed value, the inner diameter of the buoyancy ring 2 can be designed according to the average outer diameter of the bamboo cylinder 1. During on-site installation, if the inner diameter of the buoyancy ring 2 is too small, the inside of the buoyancy ring 2 can be cut off to expand the inner diameter; if the inner diameter of the buoyancy ring 2 is too large, the buoyancy ring 2 can be fixed after being sleeved on the top of the bamboo cylinder 1 by using a rope to tie the buoyancy ring 2, or bamboo pieces can be inserted into the inside of the buoyancy ring 2 for fixation. The thickness and height of the buoyancy ring 2 are determined according to the required buoyancy.

[0057] As shown in FIG. 1, a groove 14 is further provided on the outer wall of the bamboo cylinder 1 at the junction of the filled soil section 12 and the inserted section 13. The inner side of the grass mat 6 is folded upward to form a flange, and the flange is fixed in the groove 14 by a rope. Figures 1-3 The grass mat 6 is woven from plant fibers, and the plant fibers can be any one or more of rice straw, wheat straw, coconut palm, mountain palm, or hemp fiber. Specifically, the grass mat 6 is divided into six fan-shaped units 61, and adjacent two fan-shaped units 61 are hingedly connected to each other to facilitate folding and gathering of the grass mat 6 at the junction of the adjacent two fan-shaped units 61 like an umbrella canopy, and to form a complete circular ring when opened. The thickness of the grass mat 6 is generally 20-100 mm, the inner diameter of the circular ring matches the outer diameter of the bamboo cylinder 1, and the outer diameter of the circular ring is generally 10-15 times the outer diameter of the bamboo cylinder 1. Preferably, a plurality of circular rings one 41 are distributed along the outer periphery of the filled soil section 12, and a reinforcing rib 62 is further provided between the outer and inner circular rings of the grass mat 6. A plurality of circular rings two 42 are provided on the reinforcing rib 62, and the circular rings one 41 and the circular rings two 42 are connected by a cable 43. The cable 43 can increase the anti-tilting moment of the bamboo cylinder 1. When the tidal current acts on the bamboo cylinder 1, the bamboo cylinder 1 will tilt to one side, and at this time the cable 43 is pulled tight to drive the grass mat 6, which provides a counteracting force, i.e., an anti-tilting force, to keep the bamboo cylinder 1 vertically stable. Specifically, the angle between the cable 43 and the bamboo cylinder 1 is not less than 45 degrees.

[0058] The grass blanket 6 set outside the bamboo cylinder 1 is thrown into the water in a collapsed state, and slowly opens in the water by using the buoyancy and the cable 43. The center of gravity of the bamboo cylinder 1 is lower than the center of buoyancy, and under the action of the gravity G and the buoyancy F, the bamboo cylinder 1 can keep falling vertically to the beach 81. In this process, the grass blanket 6 helps the bamboo cylinder 1 keep stable falling like an opened parachute. After falling to the beach 81, the opened grass blanket 6 provides support for the bamboo cylinder 1 like a suction cup.

[0059] The application also provides a mounting method of the aforementioned light beach planting device for sea grass and fish reef, comprising the following steps:

[0060] S1: Transport the assembled planting device to the designated water area by a ship, then keep the planting device in a vertical state on the ship, make the tip of the insertion section 13 stand on the deck of the ship, and load the prepared planting soil 3 into the filling section 12, and mix the upper planting soil with the seeds of aquatic plants;

[0061] S2: Throw the vertical planting device from the side of the ship to the designated position, and wait for the planting device to sink to the beach 81 of the light beach and automatically insert into the sand layer 8 under the action of gravity and tidal current, and keep standing vertically by the structural characteristics of the planting device;

[0062] S3: According to the set distance between the planting devices, throw the next planting device into the water.

[0063] The above description is only the preferred embodiment of the application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the application, a number of improvements and replacements can be made, and these improvements and replacements should be considered as the protection scope of the application.

Claims

1. A light sand flat grass planting device and fish reef device, characterized in that, The bamboo cylinder body and a turf blanket sleeved on the outer periphery of the bamboo cylinder body, The bamboo cylinder body comprises a cavity section, a filling section and an insertion section which are sequentially communicated from top to bottom, the cavity section provides a growth space for aquatic plants, the top of the cavity section is open, and a plurality of holes are arranged on the side wall; the filling section is used for planting the aquatic plants, and is filled with planting soil; the insertion section is V-shaped at the bottom and is used for inserting into a sand layer; The turf blanket is arranged at the joint of the filling section and the insertion section, and the outer wall of the turf blanket and the filling section are connected through a cable; After the insertion section is inserted into the sand layer, the turf blanket is tightly attached to the beach around the bamboo cylinder body and holds the sand layer.

2. The photic beach grass planter and fish reef device of claim 1, wherein, The top of the cavity section is further provided with a buoyancy ring.

3. The photic beach grass planter and fish reef device of claim 2, wherein, The buoyancy ring is made of EPS plate.

4. The photic beach grass planter and fish reef device of claim 1, wherein, The turf blanket is woven by plant fibers.

5. The photic beach grass planter and fish reef device of claim 1, wherein, Two groups of reserved holes are further arranged on the outer wall of the bamboo cylinder body, the two groups of reserved holes are arranged at the joint of the filling section and the insertion section, one crosspiece extending radially along the filling section is arranged in each group of reserved holes, and a grass mat is placed on the crosspiece.

6. The photic beach grass planter and fish reef device of claim 1, wherein, A groove is further arranged on the outer wall of the bamboo cylinder body, the groove is arranged at the joint of the filling section and the insertion section, the inner side of the turf blanket is upwardly folded to form a flange, and the flange is fixed in the groove through rope binding.

7. The photic beach grass planter and fish reef device of claim 1, wherein, The thickness of the turf blanket is 20-100 mm.

8. The photic beach grass planter and fish reef device of claim 1, wherein, The bamboo cylinder body is made of bamboo.

9. A method of installing the optical beach grass planter and fish reef device according to claim 1, wherein, The method comprises the following steps: S1: transporting the assembled planting device to a specified water area through a ship, keeping the planting device in a vertical state on the ship, filling the planting soil into the filling section, and mixing the seeds of aquatic plants into the upper planting soil; S2: throwing the vertical planting device from the ship to a specified position, sinking the planting device to the beach surface of the light beach, and gradually inserting the planting device into the sand layer under the action of gravity and tidal current.

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