Device for sampling urban small and micro wetland soil seed bank

Abstract

The invention 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 device can be used for sampling the soil seed bank of the urban small and micro wetland, and can also be used for sampling multiple positions and multiple depths in a water area.

Description

Technical Field

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

[0002] Urban micro-wetlands have a close symbiotic relationship with human settlements and are one of the important ecological infrastructures that cities rely on for health and safety. They have the functions of beautifying the landscape and ecological environment, regulating micro-climates, and providing micro-habitats for birds and other wild animals. As a zone of alternating high and low water levels in urban wetlands, the coastal zone of urban micro-wetlands is greatly affected by the rise and fall of water levels. The ecosystem is complex and changeable and is very sensitive to interference from human activities. It has the functions of filtering, barrier, maintaining biodiversity, providing habitats, and controlling soil erosion, providing propagules for the ecological restoration of the system. However, due to factors such as urban expansion and human interference, urban micro-wetland vegetation has degraded, native species have disappeared, and ecological functions have been lost. The restoration and protection of vegetation diversity in urban micro-wetlands is imminent. As a reserve of plant propagules, soil seed banks promote the restoration and protection of ecosystems by maintaining the diversity and stability of plant communities, and play a key role in vegetation succession and ecological restoration. The study of wetland seed banks can not only evaluate the quality of wetland ecosystems and predict the development dynamics of wetland vegetation, but also provide theoretical references for the selection of target species for wetland vegetation restoration. At the same time, since wetland soil seed banks have huge potential for species restoration, they also have important practical significance for the protection and restoration of local native aquatic plants.

[0003] The existing soil seed bank sampling devices have the disadvantages of large sampling area, consuming manpower and material resources, fixed sampling position, and the urban micro-wetland coastal zone is located in the water-land interlaced area, making sampling more difficult than on land. Summary of the invention

[0004] One object of the present invention is to provide a device for sampling soil seed banks in small and micro urban wetlands, which can solve the technical problem of fixed sampling position of existing soil seed bank sampling devices, and can be used for sampling soil seed banks in small and micro urban wetlands, and can also be used for sampling at multiple locations and multiple depths in water areas.

[0005] In order to achieve the above objectives, the present invention provides the following technical solutions.

[0006] An apparatus for sampling the soil seed bank of small urban wetlands according to an embodiment of the first aspect of the present invention includes: a base body located on land; a movable rod assembly installed on the base body, 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 base body, 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; a sampling head installed at the other end of the third movable rod, the sampling head being used to extend into the water area for sampling, and the first movable rod, the second movable rod, and the third movable rod cooperate with each other so that the position of the sampling head can be adjusted in the X-axis, Y-axis, and Z-axis directions.

[0007] Optionally, the base body is provided with a positioning member 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 connecting member connected to the third movable rod and a rotating head that can rotate relative to the connecting member, and the rotating head has an opening groove with a downward opening.

[0010] Optionally, the sampling head includes: a plurality of connecting members, one end of each connecting member being connected to the third movable rod; a surrounding plate that encloses a hollow channel extending in the up and down direction, and multiple positions at the upper end of the surrounding plate are connected to the multiple connecting members.

[0011] Optionally, the sampling head further includes: a rotating shaft installed on one side of the inner wall of the surrounding plate in the X-axis direction or the Y-axis direction; a flexible plate wound around the rotating shaft, one end of the flexible plate being fixedly connected to the rotating shaft; a pulling rope installed on the other side of the inner wall of the surrounding plate in the X-axis direction or the Y-axis direction, the pulling rope being connected to the other end of the flexible plate; a micro motor connected to the pulling rope to drive the flexible plate to unfold through the pulling rope. When the flexible plate is all wound around the rotating shaft, the flexible plate does not block the channel. When at least a part of the flexible plate unfolds, the flexible plate blocks a part of the radial direction of the channel. When the flexible plate unfolds completely, the flexible plate blocks the entire radial direction of the channel and cooperates with the inner wall surface of the surrounding plate to form a first receiving space for receiving samples.

[0012] Optionally, the number of the flexible plates and the pulling ropes is multiple and they correspond one by one. The multiple flexible plates are spaced apart in the Z-axis direction to axially divide the channel (331) into multiple first receiving spaces (3311).

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

[0014] Optionally, the surrounding plate includes: a plurality of sleeve rods, and two adjacent sleeve rods are telescopically and movably connected, and the dimension of the overlapping area of the two sleeve rods is 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 are connected to each other, and the plurality of partition plates radially divide the channel into a plurality of second accommodation spaces, and at least one of the partition plates includes a telescopic sleeve plate structure to adjust the dimension of the second accommodation space in the X-axis or Y-axis direction.

[0016] Optionally, the base body is built with a control member and a display screen to set at least one parameter among the quadrat area, the number of sampling points, and the sampling depth.

[0017] The device for sampling the soil seed bank of urban small and micro wetlands according to the embodiment of the present invention combines a base body, a movable rod assembly and a sampling head, and can not only realize sampling for the soil seed bank of urban small and micro wetlands, but also realize sampling at multiple positions and multiple depths in the water area.

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

[0019] The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0020] Figure 1 It is a schematic structural diagram of a device for sampling the soil seed bank of urban small and micro wetlands according to an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a device for sampling the soil seed bank of urban small and micro wetlands according to another embodiment of the present invention; Figure 3 It is a partial structural schematic diagram of a device for sampling the soil seed bank of urban small and micro wetlands according to another embodiment of the present invention; Figure 4 It is a partial structural schematic diagram of a device for sampling the soil seed bank of urban small and micro wetlands according to still another embodiment of the present invention; Figure 5 It is a partial structural schematic diagram of a device for sampling the soil seed bank of urban small and micro wetlands according to still another embodiment of the present invention.

[0021] Reference Numerals in the Drawings Device 100 for sampling the soil seed bank of urban micro-wetlands; Base body 10; positioning member 11; display screen 12; power source 13; pull rod 14; Movable rod assembly 20; first movable rod 21; second movable rod 22; third movable rod 23; Sampling head 30; rotating head 31; connecting member 32; enclosing plate 33; channel 331; first receiving space 3311; second receiving space 3312; rotating shaft 34; flexible plate 35; pull rope 36; sleeve rod 37; partition plate 38; sleeve plate 39; Terrestrial area 200; water area 300. Specific embodiments

[0022] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0023] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0024] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0025] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0026] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] The following specifically describes, with reference to the accompanying drawings, the device 100 for sampling the soil seed bank of urban micro-wetlands according to an embodiment of the present invention.

[0028] As Figure 1 shown, the device 100 for sampling the soil seed bank of urban micro-wetlands according to an embodiment of the present invention includes: a base body 10, a movable rod assembly 20, and a sampling head 30.

[0029] 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, one end of the third movable rod 23 is movably connected to the other end of the second movable rod 22, and 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.

[0030] In other words, the device 100 for sampling the soil seed bank of urban micro-wetlands according to the embodiment of the present invention combines the base 10, the movable rod assembly 20, and the sampling head 30. When in use, the base 10 is located in the land area 200. Optionally, in order to facilitate use at multiple positions, wheels can also be provided on the base 10 for easy shifting, and a driving member can also be equipped to achieve electric shifting.

[0031] The movable rod assembly 20 is installed on the base 10. The movable rod assembly 20 combines the first movable rod 21, the second movable rod 22, and the 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 be rotatable relative to its own axis, so as to facilitate controlling 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. In addition, 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, and the position of the sampling head 30 can be adjusted in the X-axis, Y-axis, and Z-axis directions. For example, the second movable rod 22 is movable at least in the X-axis direction. Therefore, the position of the third movable rod 23 and the sampling head 30 can be adjusted at least in the X-axis direction. Another example is that the third movable rod 23 is movable at least in the Z-axis direction. Therefore, the position of the sampling head 30 in the Z-axis direction can be controlled. It can be understood that the first movable rod 21, the second movable rod 22, and the third movable rod 23 cooperate with each other, and the sampling head 30 can sample multiple positions and multiple depths in the water area. In addition, by electrically connecting the driving member to the first movable rod 21, the second movable rod 22, and the third movable rod 23, the position of the sampling head 30 can be electrically controlled.

[0032] 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 to sample the soil seed bank of urban micro-wetlands. During use, the positions of the first movable rod 21, the second movable rod 22, and the third movable rod 23 can be adjusted to adjust the position of the sampling head 30. Furthermore, the sampling head 30 can be located at a preset position in the water area to sample the samples at the sampling position. Additionally, the sampling head 30 can adopt existing seed sampling mechanical grippers, etc., which are not limited herein. Additionally, by connecting the driving member to the sampling head 30, electric control of sampling can be achieved.

[0033] Thus, the device 100 for sampling the soil seed bank of urban micro-wetlands according to the embodiment of the present invention can not only sample the soil seed bank of urban micro-wetlands, but also sample at multiple positions and multiple depths in the water area.

[0034] According to an embodiment of the present invention, the base body 10 is provided with a positioning member 11. The positioning member 11 is used to record the sampling position, that is, the positioning member 11 can implement the GPS positioning function. In this embodiment, by adopting an automatic positioning sampling device with GPS, each sampling position can be automatically recorded during sampling.

[0035] In some specific embodiments of the present invention, the third movable rod 23 is detachably connected to the sampling head 30 and / or the second movable rod 22. That is to say, by configuring different sampling rods and sampling heads 30, the requirements for different sampling positions and sampling depths can be met.

[0036] According to an embodiment of the present invention, the sampling head 30 includes a connecting member 32 connected to the third movable rod 23 and a rotating head 31 that is rotatable relative to the connecting member 32. The rotating head 31 has an opening groove with a downward opening, which can achieve the accommodation of the sample. That is, the sample can enter the rotating head 31 through the opening groove, and the rotating head 31 can rotate to overcome the soil resistance. The rotating head 31 can be controlled to rotate by a motor. It can be understood that the rotating head 31 in the embodiment can adopt existing soil sampling rotating heads, which will not be elaborated herein.

[0037] In some specific embodiments of the present invention, such as Figures 2 to 5As shown, the sampling head 30 includes: a plurality of connectors 32 and a shroud 33. Specifically, one end of each connector 32 is connected to the third movable rod 23. The shroud 33 encloses a hollow channel 331 extending in the up and down direction. The axial direction of the channel 331 can be the Z-axis direction, and the radial direction of the channel 331 can extend on the XY plane. The upper end of the shroud 33 is connected to the plurality of connectors 32 at multiple positions. Among them, one end of each connector 32 is connected to the third movable rod 23. For example, the connector 32 is a chain rope or a rigid connecting rod, etc. The connector 32 can play a connecting role and a force transmission role, etc. The shroud 33 encloses a hollow channel 331 extending in the up and down direction, that is, both the upper end and the lower end of the channel 331 are open. In addition, the upper end of the shroud 33 is connected to the lower end of the connector 32.

[0038] According to an embodiment of the present invention, the sampling head 30 further includes a rotating shaft 34, a flexible plate 35, a pulling rope 36 and a micro motor. Among them, the rotating shaft 34 is installed on one side of the inner wall of the shroud 33 in the X-axis direction or the Y-axis direction. The flexible plate 35 is wound around the rotating shaft 34. One end of the flexible plate 35 is fixedly connected to the rotating shaft 34. The pulling rope 36 is installed on the other side of the inner wall of the shroud 33 in the X-axis direction or the Y-axis direction. The pulling rope 36 is connected to the other end of the flexible plate 35. The micro motor is connected to the pulling rope 36 to drive the flexible plate 35 to unfold through the pulling rope 36. When the flexible plate 35 is entirely 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 unfolds, the flexible plate 35 blocks a part of the radial direction of the channel 331. When the flexible plate 35 is fully unfolded, the flexible plate 35 blocks the entire radial direction of the channel 331 and cooperates with the inner wall surface of the shroud 33 to form a first receiving space 3311 for receiving samples.

[0039] That is to say, the sampling head 30 of this embodiment mainly consists of a plurality of connecting members 32, a surrounding plate 33, a rotating shaft 34, a flexible plate 35, a pulling 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 direction or the Y-axis direction. For example, the rotating shaft 34 is installed on the left inner wall of the surrounding plate 33. The flexible plate 35 is wound around the rotating shaft 34 along its own axis direction. 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 be gradually unfolded under the pulling of an external force. Optionally, reset springs can be connected to both ends of the rotating shaft 34. When the external force is removed, the rotating shaft 34 can drive the flexible plate 35 to rotate in the reverse direction and wind around the rotating shaft 34 again. In addition, a pulling rope 36 can be installed on the other side of the surrounding plate 33 in the X-axis direction or the Y-axis direction. For example, the pulling rope 36 is installed on the right inner wall of the surrounding plate 33. The pulling rope 36 is connected to the other end of the flexible plate 35, and the micro motor is connected to one end of the pulling rope 36. The flexible plate 35 can be driven to unfold by the pulling rope 36. By using a micro motor, electric drive can be realized.

[0040] Among them, when the flexible plate 35 is completely wound around the rotating shaft 34, the radial part of the flexible plate 35 does not block the channel 331. For example, the flexible plate 35 does not cover the lower end or the upper end or the middle part of the channel 331. When at least a part of the flexible plate 35 is unfolded, the flexible plate 35 blocks a part of the radial direction of the channel 331. For example, the flexible plate 35 covers a part of the lower end or a part of the upper end or a part of the middle part of the channel 331. When the flexible plate 35 is completely unfolded, the flexible plate 35 blocks the entire radial direction of the channel 331. For example, the flexible plate 35 completely covers the lower end or the upper end or the middle part of the channel 331. In addition, when the flexible plate 35 is completely unfolded, the flexible plate 35 and the surrounding plate 33 cooperate to form a first receiving space 3311, and the first receiving space 3311 can receive samples. This embodiment can be used for one-time sampling of large-area samples at the same depth.

[0041] According to an embodiment of the present invention, the number of flexible plates 35 and draw ropes 36 is multiple and they correspond one by one. For example, the number of flexible plates 35 is two, three, etc., the number of draw ropes 36 is the same as that of the flexible plates 35, and the deployment of the corresponding flexible plates 35 can be controlled by the draw ropes 36. The multiple flexible plates 35 are spaced apart in the Z-axis direction, and there is a first accommodation space 3311 between two adjacent flexible plates 35, that is, there are at least two first accommodation spaces 3311 in the Z-axis direction, namely, the channel 331 is axially divided into multiple first accommodation spaces 3311. In this embodiment, by using multiple spaced-apart flexible plates 35, multiple first accommodation spaces 3311 can be formed, so that large-area samples at different depths can be sampled simultaneously and the samples at different depths can be separated. For example, the number of flexible plates 35 is two. There is a first accommodation space 3311 above one flexible plate 35, and there is another first accommodation space 3311 between this flexible plate 35 and the other flexible plate 35. When in use, the enclosure plate 33 can be first driven downward into the water area, and then the flexible plate 35 can be driven to move horizontally by the draw rope 36. While forming multiple first accommodation spaces 3311, the samples at different depths are enclosed in the corresponding first accommodation spaces 3311. In this embodiment, by using multiple flexible plates 35, large-area samples in waters at different depths can be sampled simultaneously and separated from each other. Through this embodiment, simultaneous sampling of different layers can be achieved when sampling the soil seed bank of urban small and micro wetlands.

[0042] According to an embodiment of the present invention, as Figures 2 to 4 shown, the radial dimension of the channel 331 is adjustable, that is, the size of the sampling range can be controlled, so as to improve the sampling efficiency for soil seed banks of small and micro wetlands with different sizes. In addition, the enclosure plate 33 includes: multiple sleeve rods 37, and two adjacent sleeve rods 37 are telescopically and movably connected, and the dimension of the overlapping area of the two sleeve rods 37 is adjustable, that is, the overlapping length on the length of the sleeve rod 37 is adjustable, so that the radial dimension of the channel 331 can be adjusted, and then the sampling area can be controlled. For example, the enclosure plate 33 is a rectangular member, the enclosure plate 33 includes four side edges, each side edge includes two sleeve rods 37, and the two sleeve rods 37 are sleeved and connected to achieve telescopically and movably connection, so that the length of the side edge can be controlled, and then the radial dimension of the channel 331 can be controlled. It can be understood that the overlapping range of two adjacent sleeve rods 37 can be controlled by electric drive or manual drive.

[0043] In some specific embodiments of the present invention, as Figure 5As shown, the sampling head 30 further includes: a plurality of partition plates 38, which are connected to each other. The plurality of partition plates 38 radially divide the channel 331 into a plurality of second accommodation spaces 3312. At least one partition plate 38 includes a telescopic sleeve plate 39 structure to adjust the size of the second accommodation space 3312 in the X-axis or Y-axis direction. For example, the plurality of partition plates 38 and the surrounding plate 33 form at least one cross-shaped unit. The cross-shaped unit includes a space extending in the up-down direction. The cross-shaped unit divides the channel 331 in the XY-axis direction. In addition, the four side walls of the cross-shaped unit include telescopic sleeve plate 39 structures. The sleeve plate 39 structure is similar to the sleeve rod 37 structure and can adjust the size of the space of the cross-shaped unit in the X-axis or Y-axis direction, that is, further adjust the size of a single space after the channel 331 is further divided in the XY-axis direction, and small-area sampling at different positions in the water area at the same depth can be achieved. It can be understood that the sampling space can be kept unchanged during the sampling process by the tightness of the socket or the limiting structure. Through this embodiment, adjustable quadrat area and adjustable sampling point number can be achieved when sampling the soil seed bank of urban small and micro wetlands.

[0044] According to an embodiment of the present invention, the base body 10 is internally provided with a control member and a display screen 12, such as an internally installed chip, etc., and at least one parameter among the quadrat area, the sampling point number, and the sampling depth can be set to facilitate intelligent operation.

[0045] Optionally, a power supply 13 is further provided on the base body 10 to supply power to the above-mentioned motor, driving member, etc. Optionally, the base body 10 is provided with a pull rod 14 to facilitate pushing, transporting, etc.

[0046] In summary, the device 100 for sampling the soil seed bank of urban small and micro wetlands according to the embodiment of the present invention combines the base body 10, the movable rod assembly 20, and the sampling head 30, and can meet the requirements for different sampling positions and sampling depths when sampling the soil seed bank of urban small and micro wetlands.

[0047] Although some 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 only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified 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 soil seed banks in urban micro-wetlands, characterized in that: include: A substrate (10), wherein the substrate (10) is located in a land area (200); A movable rod assembly (20), the movable rod assembly (20) being mounted on the base (10), the movable rod assembly (20) comprising a first movable rod (21), a second movable rod (22) and a third movable rod (23), one end of the first movable rod (21) being connected to the base (10), one end of the second movable rod (22) being movably connected to the other end of the first movable rod (21), and one end of the third movable rod (23) being movably connected to the other end of the second movable rod (22); A sampling head (30), the sampling head (30) being mounted on the other end of the third movable rod (23), the sampling head (30) being 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) cooperating with each other so that the position of the sampling head (30) in the directions of the X-axis, the Y-axis and the Z-axis can be adjusted.

2. The device (100) for sampling urban micro-wetland soil seed banks according to claim 1, characterized in that: The base body (10) is provided with a positioning piece (11), and the positioning piece (11) is used to record a sampling position.

3. The device (100) for sampling soil seed banks in urban 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 soil seed banks in urban micro-wetlands according to claim 1, characterized in that: The sampling head (30) comprises a connecting piece (32) connected to the third movable rod (23) and a rotating head (31) rotatable relative to the connecting piece (32), wherein the rotating head (31) has an opening slot opening downward.

5. The device (100) for sampling soil seed banks in urban micro-wetlands according to claim 1, characterized in that: The sampling head (30) comprises: A plurality of connecting members (32), one end of each connecting member (32) being connected to the third movable rod (23); The enclosing plate (33) encloses a hollow passage (331) extending in the up-down direction, and a plurality of positions at the upper end of the enclosing plate (33) are connected to a plurality of connecting members (32).

6. The device (100) for sampling soil seed banks in urban micro-wetlands according to claim 5, characterized in that: The sampling head (30) further comprises: A rotating shaft (34), the rotating shaft (34) being mounted on one side of the inner wall of the enclosure plate (33) in the X-axis direction or the Y-axis direction; a flexible plate (35), the flexible plate (35) being wound around the rotating shaft (34), one end of the flexible plate (35) being fixedly connected to the rotating shaft (34); a pull rope (36), the pull rope (36) being installed on the other side of the inner wall of the enclosure (33) in the X-axis direction or the Y-axis direction, the pull rope (36) being connected to the other end of the flexible plate (35); A micro motor, wherein the micro motor is connected to the pull rope (36) so as to drive the flexible plate (35) to stretch through the pull rope (36); when the flexible plate (35) is completely wound 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 stretched, the flexible plate (35) blocks a radial portion of the channel (331); when the flexible plate (35) is completely stretched, 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 a sample.

7. The device (100) for sampling soil seed banks in urban micro-wetlands according to claim 6, characterized in that: The number of the flexible plates (35) and the pull ropes (36) is multiple and corresponds one to one, and the multiple flexible plates (35) are spaced apart and distributed in the Z-axis direction, so as to axially separate the channel (331) into multiple first receiving spaces (3311).

8. The device (100) for sampling soil seed banks in urban micro-wetlands according to claim 5, characterized in that: The radial dimension of the channel (331) is adjustable, and the enclosure plate (33) comprises: A plurality of sleeve rods (37), two adjacent sleeve rods (37) are telescopically movably connected, and the size of the overlapping area of ​​the two sleeve rods (37) is adjustable to adjust the radial size of the channel (331).

9. The device (100) for sampling urban micro-wetland soil seed banks according to claim 8, characterized in that: The sampling head (30) further comprises: A plurality of partition plates (38), wherein the plurality of partition plates (38) are connected to each other, and the plurality of partition plates (38) radially divide the channel (331) into a plurality of second receiving spaces (3312); at least one of the partition plates (38) comprises a retractable sleeve plate (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 soil seed banks in urban micro-wetlands according to any one of claims 1 to 9, characterized in that: The base body (10) has a built-in control component and a display screen (12) for setting at least one parameter among the sample plot area, the number of sampling points, and the sampling depth.

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