Device for sampling urban small and micro wetland soil seed bank

Abstract

The utility model discloses a device for sampling a soil seed bank of an urban small and micro wetland, which comprises a base body positioned in a land area; the movable rod assembly is installed on the base body and comprises a first movable rod, a second movable rod and a third movable rod, one end of the first movable rod is connected with the base body, one end of the second movable rod is movably connected with the other end of the first movable rod, and one end of the third movable rod is movably connected with the other end of the second movable rod; the sampling head is mounted at the other end of the third movable rod, the sampling head is used for stretching into a water area for sampling, and the first movable rod, the second movable rod and the third movable rod are matched with one another, so that the position of the sampling head can be adjusted in the X-axis direction, the Y-axis direction and the Z-axis direction. The sampling device can be used for sampling a soil seed bank of a small and micro wetland in a city, and can also be used for sampling at multiple positions and multiple depths in a water area.

Description

Technical Field

[0001] This utility model relates to the field of ecosystem technology, and more specifically, to a device for sampling soil seed banks in urban micro-wetlands. Background Technology

[0002] Urban micro-wetlands have a close symbiotic relationship with human settlements in cities and are one of the important ecological infrastructures upon which urban health and safety depend. They play a role in beautifying the landscape and ecological environment, regulating microclimates, and providing micro-habitats for birds and other wildlife. As alternating high and low water levels in urban wetlands, the riparian zones of urban micro-wetlands are greatly affected by water level fluctuations, resulting in complex and variable ecosystems that are highly sensitive to human disturbances. They serve as filters, barriers, maintain biodiversity, provide habitats, and control soil erosion, providing propagules for ecological restoration. However, due to factors such as urban expansion and human disturbance, vegetation degradation, loss of native species, and loss of ecological functions have occurred in urban micro-wetlands, making the restoration and protection of vegetation diversity in urban micro-wetlands an urgent priority. Soil seed banks, as reserves of plant propagules, promote ecosystem restoration and protection by maintaining plant community diversity and stability, playing a crucial role in vegetation succession and ecological restoration. Research using wetland seed banks can not only assess wetland ecosystem quality and predict wetland vegetation development dynamics but also provide theoretical references for selecting target species for wetland vegetation restoration. At the same time, wetland soil seed banks have great potential for species restoration and are of great practical significance for the protection and restoration of native aquatic plants.

[0003] Existing soil seed bank sampling devices have drawbacks such as large sampling area, high manpower and material resources consumption, fixed sampling location, and the fact that urban micro-wetland riparian zones are located in water-land transition areas, making sampling more difficult than in land areas. Utility Model Content

[0004] One objective of this invention is to provide a device for sampling soil seed banks in urban micro-wetlands, which can solve the technical problem of fixed sampling positions in existing soil seed bank sampling devices. It can be used for sampling soil seed banks in urban micro-wetlands, and can also be used for sampling at multiple locations and depths in water bodies.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] An apparatus for sampling soil seed banks in urban micro-wetlands according to a first aspect embodiment of the present invention includes: a substrate located on land; a movable rod assembly mounted on the substrate, the movable rod assembly including a first movable rod, a second movable rod, and a third movable rod, one end of the first movable rod being connected to the substrate, one end of the second movable rod being movably connected to the other end of the first movable rod, and one end of the third movable rod being movably connected to the other end of the second movable rod; and a sampling head mounted on the other end of the third movable rod, the sampling head being used to extend into the water area for sampling, the first movable rod, the second movable rod, and the third movable rod cooperating with each other to allow the position of the sampling head to be adjustable in the X-axis, Y-axis, and Z-axis directions.

[0007] Optionally, the substrate is provided with a positioning element for recording the sampling position.

[0008] Optionally, the third movable rod is detachably connected to the sampling head and / or the second movable rod.

[0009] Optionally, the sampling head includes a connector connected to the third movable rod and a rotating head rotatable relative to the connector, the rotating head having a downward-opening slot.

[0010] Optionally, the sampling head includes: a plurality of connectors, one end of each connector being connected to the third movable rod; a surrounding plate enclosing a hollow channel extending in the vertical direction, with multiple positions at the upper end of the surrounding plate connected to the plurality of connectors.

[0011] Optionally, the sampling head further includes: a rotating shaft, which is installed on one side of the inner wall of the enclosure in the X-axis or Y-axis direction; a flexible plate, which is wound around the rotating shaft, with one end of the flexible plate fixedly connected to the rotating shaft; a pull rope, which is installed on the other side of the inner wall of the enclosure in the X-axis or Y-axis direction, and the pull rope is connected to the other end of the flexible plate; and a micro motor, which is connected to the pull rope to drive the flexible plate to extend. When the flexible plate is fully wound around the rotating shaft, the flexible plate does not obstruct the channel. When at least a portion of the flexible plate is extended, the flexible plate obstructs a radial portion of the channel. When the flexible plate is fully extended, the flexible plate obstructs the entire radial portion of the channel and cooperates with the inner wall surface of the enclosure to form a first receiving space, the first receiving space being used to receive the sample.

[0012] Optionally, there are multiple flexible plates and one-to-one corresponding pull ropes, and the multiple flexible plates are spaced apart in the Z-axis direction to divide the channel (331) into multiple first receiving spaces (3311) in the axial direction.

[0013] Optionally, the radial dimension of the channel is adjustable.

[0014] Optionally, the enclosure includes: a plurality of sleeve rods, with two adjacent sleeve rods being telescopically connected, and the overlapping area of ​​two sleeve rods being adjustable to adjust the radial dimension of the channel.

[0015] Optionally, the sampling head further includes: a plurality of partition plates, the plurality of partition plates being interconnected, the plurality of partition plates dividing the channel radially into a plurality of second receiving spaces, at least one of the partition plates including a retractable sleeve structure to adjust the size of the second receiving space in the X-axis or Y-axis direction.

[0016] Optionally, the substrate has built-in controls and a display screen to set at least one parameter among the quadrat area, number of sampling points, and sampling depth.

[0017] The device for sampling soil seed banks in urban micro-wetlands according to the present invention combines a base, a movable rod assembly, and a sampling head, which can not only realize sampling for soil seed banks in urban micro-wetlands, but also realize sampling at multiple locations and depths in water bodies.

[0018] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0020] Figure 1 This is a schematic diagram of a device for sampling soil seed banks in urban micro-wetlands according to an embodiment of the present invention.

[0021] Figure 2 This is a partial structural schematic diagram of a device for sampling soil seed banks in urban micro-wetlands according to another embodiment of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of a device for sampling soil seed banks in urban micro-wetlands according to another embodiment of the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of an apparatus for sampling soil seed banks in urban micro-wetlands according to another embodiment of the present invention.

[0024] Figure 5This is a partial structural schematic diagram of an apparatus for sampling soil seed banks in urban micro-wetlands according to another embodiment of the present invention.

[0025] Attached icon number

[0026] Device 100 for sampling soil seed banks in small urban wetlands;

[0027] 10. Base; 11. Positioning component; 12. Display screen; 13. Power supply; 14. Pull rod;

[0028] Movable rod assembly 20; First movable rod 21; Second movable rod 22; Third movable rod 23;

[0029] Sampling head 30; Rotating head 31; Connector 32; Enclosure 33; Channel 331; First receiving space 3311; Second receiving space 3312; Rotating shaft 34; Flexible plate 35; Pull rope 36; Sleeve rod 37; Divider plate 38; Sleeve plate 39;

[0030] Land area 200; water area 300. Detailed Implementation

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] The apparatus 100 for sampling soil seed banks in urban micro-wetlands according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0037] like Figure 1As shown, the device 100 for sampling soil seed banks in urban micro-wetlands according to an embodiment of the present invention includes: a base 10, a movable rod assembly 20, and a sampling head 30.

[0038] Specifically, the base 10 is located in the land area 200, and the movable rod assembly 20 is installed on the base 10. The movable rod assembly 20 includes a first movable rod 21, a second movable rod 22, and a third movable rod 23. One end of the first movable rod 21 is connected to the base 10, one end of the second movable rod 22 is movably connected to the other end of the first movable rod 21, and one end of the third movable rod 23 is movably connected to the other end of the second movable rod 22. A sampling head 30 is installed on the other end of the third movable rod 23. The sampling head 30 is used to extend into the water area 300 for sampling. The first movable rod 21, the second movable rod 22, and the third movable rod 23 cooperate with each other so that the position of the sampling head 30 can be adjusted in the X-axis, Y-axis, and Z-axis directions.

[0039] In other words, the device 100 for sampling soil seed banks in urban micro-wetlands according to this embodiment of the present invention combines a base 10, a movable rod assembly 20, and a sampling head 30. In use, the base 10 is located in the land area 200. Optionally, to facilitate use in multiple locations, wheels can be provided on the base 10 for easy relocation, and a drive unit can be provided for electric relocation.

[0040] A movable rod assembly 20 is mounted on the base 10. The movable rod assembly 20 consists of a first movable rod 21, a second movable rod 22, and a third movable rod 23. One end of the first movable rod 21 is connected to the base 10; for example, the lower end of the first movable rod 21 is connected to the base 10. The connection between the first movable rod 21 and the base 10 can be a fixed connection or a movable connection. For example, the first movable rod 21 can rotate relative to its own axis, thereby facilitating the control of the position of the third movable rod 23 in the X-axis and / or Y-axis directions. One end of the second movable rod 22 is movably connected to the other end of the first movable rod 21; for example, the rear end of the second movable rod 22 is hinged to the upper end of the first movable rod 21. Similarly, one end of the third movable rod 23 is movably connected to the other end of the second movable rod 22; for example, the upper end of the third movable rod 23 is hinged to the front end of the second movable rod 22. It should be noted that the first movable rod 21, the second movable rod 22, and the third movable rod 23 cooperate with each other to allow the sampling head 30 to be adjusted in the X-axis, Y-axis, and Z-axis directions. For example, the second movable lever 22 is movable at least in the X-axis direction, thus allowing adjustment of the position of the third movable lever 23 and the sampling head 30 at least in the X-axis direction. Similarly, the third movable lever 23 is movable at least in the Z-axis direction, thus allowing control of the position of the sampling head 30 in the Z-axis direction. It is understood that the first movable lever 21, the second movable lever 22, and the third movable lever 23 cooperate to enable the sampling head 30 to sample at multiple locations and depths in the water. Furthermore, the position of the sampling head 30 can be electrically controlled by connecting a drive mechanism to the first movable lever 21, the second movable lever 22, and the third movable lever 23.

[0041] In addition, the sampling head 30 is installed at the other end of the third movable rod 23. The sampling head 30 is used to extend into the water area 300 for sampling of urban micro-wetland soil seed bank. During use, the position of the sampling head 30 can be adjusted by adjusting the positions of the first movable rod 21, the second movable rod 22, and the third movable rod 23, allowing the sampling head 30 to be positioned at a preset location in the water area for sampling. Alternatively, the sampling head 30 can utilize existing seed sampling mechanical grippers, etc., without limitation. Furthermore, a drive unit can be connected to the sampling head 30 to achieve electrically controlled sampling.

[0042] Therefore, the device 100 for sampling urban micro-wetland soil seed bank according to the present invention can not only realize sampling for urban micro-wetland soil seed bank, but also realize sampling at multiple locations and multiple depths in water.

[0043] According to one embodiment of the present invention, the substrate 10 is provided with a positioning element 11, which is used to record the sampling position, that is, the positioning element 11 can realize GPS positioning function. In this embodiment, by using an automatic positioning sampling device with GPS, each sampling position can be automatically recorded during sampling.

[0044] In some specific embodiments of this utility model, the third movable rod 23 is detachably connected to the sampling head 30 and / or the second movable rod 22. That is, by configuring different sampling rods and sampling heads 30, the needs of different sampling positions and sampling depths can be met.

[0045] According to one embodiment of the present invention, the sampling head 30 includes a connector 32 connected to the third movable rod 23 and a rotating head 31 rotatable relative to the connector 32. The rotating head 31 has a downward-opening slot to accommodate the sample, i.e., the sample can pass through the slot and enter the rotating head 31. The rotating head 31 can rotate to overcome soil resistance, and the rotation of the rotating head 31 can be controlled by a motor. It is understood that the rotating head 31 in the embodiment can be an existing soil sampling rotating head, which will not be described in detail here.

[0046] In some specific embodiments of this utility model, such as Figures 2 to 5 As shown, the sampling head 30 includes multiple connectors 32 and a surrounding plate 33. Specifically, one end of each connector 32 is connected to a third movable rod 23. The surrounding plate 33 encloses a hollow channel 331 extending in the vertical direction. The axial direction of the channel 331 can be the Z-axis direction, and the radial direction of the channel 331 can extend in the XY plane. Multiple positions on the upper end of the surrounding plate 33 are connected to multiple connectors 32. One end of each connector 32 is connected to the third movable rod 23. For example, the connector 32 is a chain or a rigid connecting rod, etc. The connector 32 can serve as a connector and a force transmission component. The surrounding plate 33 encloses a hollow channel 331 extending in the vertical direction, that is, both the upper and lower ends of the channel 331 are open. In addition, the upper end of the surrounding plate 33 is connected to the lower end of the connector 32.

[0047] According to one embodiment of the present invention, the sampling head 30 further includes a rotating shaft 34, a flexible plate 35, a pull rope 36, and a micro motor. The rotating shaft 34 is installed on one side of the inner wall of the enclosure 33 in the X-axis or Y-axis direction. The flexible plate 35 is wound around the rotating shaft 34, and one end of the flexible plate 35 is fixedly connected to the rotating shaft 34. The pull rope 36 is installed on the other side of the inner wall of the enclosure 33 in the X-axis or Y-axis direction, and the pull rope 36 is connected to the other end of the flexible plate 35. The micro motor is connected to the pull rope 36 so that the flexible plate 35 can be extended by the pull rope 36. When the flexible plate 35 is fully wound around the rotating shaft 34, the flexible plate 35 does not block the channel 331. When at least a part of the flexible plate 35 is extended, the flexible plate 35 blocks a radial part of the channel 331. When the flexible plate 35 is fully extended, the flexible plate 35 blocks the entire radial part of the channel 331 and cooperates with the inner wall surface of the enclosure 33 to form a first receiving space 3311. The first receiving space 3311 is used to receive samples.

[0048] In other words, the sampling head 30 in this embodiment mainly consists of multiple connectors 32, a surrounding plate 33, a rotating shaft 34, a flexible plate 35, a pull rope 36, and a micro motor. A rotating shaft 34 is installed on one side of the inner wall of the surrounding plate 33 in the X-axis or Y-axis direction, for example, on the left inner side wall of the surrounding plate 33. A flexible plate 35 is wound around the rotating shaft 34 along its own axis. The flexible plate 35 can be wound around the rotating shaft 34. Since one end of the flexible plate 35 is fixedly connected to the rotating shaft 34, the other end of the flexible plate 35 can gradually unfold under external force. Optionally, return springs can be connected to both ends of the rotating shaft 34. When the external force is released, the rotating shaft 34 can drive the flexible plate 35 to rotate in the opposite direction and rewound onto the rotating shaft 34. Alternatively, a pull rope 36 can be installed on the other side of the enclosure 33 in the X-axis or Y-axis direction. For example, a pull rope 36 can be installed on the inner right side of the enclosure 33. The pull rope 36 is connected to the other end of the flexible plate 35, and a micro motor is connected to one end of the pull rope 36. The flexible plate 35 can be extended by pulling the rope 36. Electric drive can be achieved by using a micro motor.

[0049] When the flexible plate 35 is fully wound around the pivot 34, the flexible plate 35 does not obstruct the radial portion of the channel 331; for example, the flexible plate 35 does not obstruct the lower end, upper end, or middle portion of the channel 331. When at least a portion of the flexible plate 35 is extended, the flexible plate 35 obstructs a radial portion of the channel 331; for example, the flexible plate 35 obstructs a portion of the lower end, upper end, or middle portion of the channel 331. When the flexible plate 35 is fully extended, the flexible plate 35 obstructs the entire radial portion of the channel 331; for example, the flexible plate 35 completely obstructs the lower end, upper end, or middle portion of the channel 331. Furthermore, when the flexible plate 35 is fully extended, the flexible plate 35 cooperates with the surrounding plate 33 to form a first receiving space 3311, which can receive a sample. This embodiment can be used to sample a large area of ​​samples located at the same depth in a single operation.

[0050] According to one embodiment of this utility model, the number of flexible plates 35 and pull ropes 36 are multiple and correspond one-to-one. For example, the number of flexible plates 35 is two, three, etc., and the number of pull ropes 36 is the same as the number of flexible plates 35. The unfolding of the corresponding flexible plate 35 can be controlled by the pull ropes 36. The multiple flexible plates 35 are spaced apart in the Z-axis direction, and there is a first receiving space 3311 between two adjacent flexible plates 35. That is, there are at least two first receiving spaces 3311 in the Z-axis direction, that is, the channel 331 is axially divided into multiple first receiving spaces 3311. In this embodiment, multiple first receiving spaces 3311 can be formed by using multiple spaced flexible plates 35, so that large-area samples at different depths can be sampled simultaneously and the samples at different depths can be separated. For example, there are two flexible plates 35. One flexible plate 35 has a first receiving space 3311 above it, and another first receiving space 3311 exists between the two flexible plates 35. In use, the enclosure plate 33 can be driven downwards into the water area, and then the flexible plates 35 can be driven horizontally by the pull rope 36. This forms multiple first receiving spaces 3311, enclosing samples at different depths within their respective spaces. In this embodiment, by using multiple flexible plates 35, large-area samples from different depths of water can be sampled simultaneously and separated from each other. This embodiment also enables simultaneous sampling of different layers when sampling urban micro-wetland soil seed banks.

[0051] According to one embodiment of the present invention, such as Figures 2 to 4As shown, the radial dimension of channel 331 is adjustable, which allows control over the sampling range and improves the efficiency of sampling small wetland soil seed banks of different sizes. Furthermore, the enclosure 33 includes multiple sleeves 37, with adjacent sleeves 37 telescopically connected. The overlapping area of ​​two sleeves 37 is adjustable, meaning the overlap length along the length of the sleeves 37 is adjustable, thereby adjusting the radial dimension of channel 331 and controlling the sampling area. For example, the enclosure 33 is a rectangular piece, including four sides, each side including two sleeves 37. The two sleeves 37 are connected in a telescopic manner, allowing control over the length of the side and thus the radial dimension of channel 331. It is understood that the overlap range of adjacent sleeves 37 can be controlled electrically or manually.

[0052] According to some specific embodiments of this utility model, such as Figure 5 As shown, the sampling head 30 also includes: multiple partition plates 38 interconnected, which radially divide the channel 331 into multiple second receiving spaces 3312. At least one partition plate 38 includes a retractable sleeve plate 39 structure to adjust the size of the second receiving space 3312 in the X-axis or Y-axis direction. For example, the multiple partition plates 38 and the surrounding plate 33 form at least one grid-shaped unit, which includes spaces extending in the vertical direction and divides the channel 331 in the XY-axis direction. Furthermore, the four sidewalls of the grid-shaped unit include retractable sleeve plate 39 structures, similar to the sleeve rod 37 structure, which can adjust the size of the space of the grid-shaped unit in the X-axis or Y-axis direction. That is, by further adjusting the size of the individual spaces after further dividing the channel 331 in the XY-axis direction, small-area sampling at different locations in the same depth of water can be achieved. It is understood that the sampling space can remain unchanged during the sampling process by using tightness of the connection or a limiting structure. This embodiment enables the adjustment of the sample plot area and the number of sampling points when sampling urban micro-wetland soil seed banks.

[0053] According to one embodiment of the present invention, the substrate 10 has built-in control components and a display screen 12, such as a built-in chip, which can set at least one parameter among the sample plot area, number of sampling points, and sampling depth, so as to facilitate intelligent operation.

[0054] Optionally, a power supply 13 is also provided on the base 10 to provide power to the aforementioned motor, drive components, etc. Optionally, a pull rod 14 is provided on the base 10 to facilitate pushing and transportation.

[0055] In summary, the device 100 for sampling urban micro-wetland soil seed bank according to the present invention combines a base 10, a movable rod assembly 20, and a sampling head 30, which can meet the needs of different sampling positions and sampling depths when sampling urban micro-wetland soil seed bank.

[0056] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A device (100) for sampling seed banks in urban small and micro wetland soils, characterized by, include: The substrate (10) is located in the land area (200); A movable rod assembly (20) is mounted on the base (10). The movable rod assembly (20) includes a first movable rod (21), a second movable rod (22), and a third movable rod (23). One end of the first movable rod (21) is connected to the base (10), one end of the second movable rod (22) is movably connected to the other end of the first movable rod (21), and one end of the third movable rod (23) is movably connected to the other end of the second movable rod (22). The sampling head (30) is installed at the other end of the third movable rod (23). The sampling head (30) is used to extend into the water area (300) for sampling. The first movable rod (21), the second movable rod (22) and the third movable rod (23) cooperate with each other so that the position of the sampling head (30) can be adjusted in the X-axis, Y-axis and Z-axis directions.

2. The device (100) for sampling of seed bank in urban small and micro wetland soils according to claim 1, characterized in that, The substrate (10) is provided with a positioning element (11), which is used to record the sampling position.

3. The device (100) for sampling of seed bank in urban small and micro wetlands according to claim 1, characterized in that, The third movable rod (23) is detachably connected to the sampling head (30) and / or the second movable rod (22).

4. The device (100) for sampling of seed bank in urban small and micro wetlands according to claim 1, characterized in that, The sampling head (30) includes a connector (32) connected to the third movable rod (23) and a rotating head (31) rotatable relative to the connector (32), the rotating head (31) having a downward-opening slot.

5. The device (100) for sampling of seed bank in urban small and micro wetlands according to claim 1, characterized in that, The sampling head (30) includes: Multiple connectors (32), one end of each connector (32) being connected to the third movable rod (23); A partition (33) encloses a hollow channel (331) extending in the vertical direction, and multiple positions at the upper end of the partition (33) are connected to multiple connectors (32).

6. The device (100) for sampling the seed bank of urban small and micro wetland soils according to claim 5, characterized in that, The sampling head (30) also includes: A rotating shaft (34) is installed on one side of the inner wall of the enclosure (33) in the X-axis direction or the Y-axis direction; A flexible plate (35) is wound around the rotating shaft (34), and one end of the flexible plate (35) is fixedly connected to the rotating shaft (34); Pull rope (36), the pull rope (36) is installed on the other side of the inner wall of the enclosure (33) in the X-axis direction or the Y-axis direction, and the pull rope (36) is connected to the other end of the flexible plate (35); A micro motor is connected to the pull rope (36) to drive the flexible plate (35) to extend. When the flexible plate (35) is fully wrapped around the rotating shaft (34), the flexible plate (35) does not block the channel (331). When at least a portion of the flexible plate (35) is extended, the flexible plate (35) blocks a portion of the radial direction of the channel (331). When the flexible plate (35) is fully extended, the flexible plate (35) blocks the entire radial direction of the channel (331) and cooperates with the inner wall surface of the enclosure (33) to form a first receiving space (3311). The first receiving space (3311) is used to receive samples.

7. The device (100) for sampling the seed bank of urban small and micro wetland soils according to claim 6, characterized in that, The number of flexible plates (35) and pull ropes (36) is multiple and corresponds one to one. The multiple flexible plates (35) are spaced apart in the Z-axis direction to divide the channel (331) into multiple first receiving spaces (3311) in the axial direction.

8. The device (100) for sampling the seed bank of urban small and micro wetland soils according to claim 5, characterized in that, The radial dimension of the channel (331) is adjustable, and the enclosure (33) includes: Multiple sleeves (37), two adjacent sleeves (37) are telescopically connected, and the overlapping area of ​​two sleeves (37) is adjustable to adjust the radial dimension of the channel (331).

9. The device (100) for sampling the seed bank of urban small and micro wetland soils according to claim 8, characterized in that, The sampling head (30) also includes: Multiple partitions (38) are interconnected, and the multiple partitions (38) divide the channel (331) radially into multiple second receiving spaces (3312). At least one of the partitions (38) includes a retractable sleeve (39) structure to adjust the size of the second receiving space (3312) in the X-axis or Y-axis direction.

10. The device (100) for sampling the seed bank of urban small and micro wetland soils according to any one of claims 1-9, characterized in that, The substrate (10) has built-in controls and a display screen (12) to set at least one of the parameters: sample plot area, number of sampling points, and sampling depth.

Images