Plateau abandoned mine vegetation quadrat investigation rapid arrangement device and method

Abstract

The invention relates to the technical field of vegetation quadrat investigation, in particular to a plateau abandoned mine vegetation quadrat investigation rapid arrangement device which comprises four vertical rods and four transverse rods. The four transverse rods form a frame capable of projecting a rectangle to the ground, and every two adjacent transverse rods are connected through a vertical rod. Two lifting grooves are formed in the outer wall of each vertical rod in the length direction of the corresponding vertical rod, the two lifting grooves in each vertical rod are arranged at intervals in the circumferential direction of the corresponding vertical rod, a lifting block is slidably arranged in each lifting groove in the length direction of the corresponding lifting groove, and the two ends of each transverse rod are detachably connected with the corresponding lifting blocks; and each cross rod comprises a plurality of butt joint rods which are in butt joint in sequence. The method can adapt to the vegetation quadrat survey of the complicated geological environment of the plateau abandoned mine.

Description

Technical Field

[0001] The present invention relates to the technical field of vegetation quadrat investigation, and particularly to a rapid layout device and method for vegetation quadrat investigation in plateau abandoned mines. Background Art

[0002] In order to analyze the species composition of a certain plant community, it is necessary to select a certain number of sample plots within the range where the plant community is distributed for statistics, and this method is called the sample plot method. Generally speaking, the sample plots should be selected in areas where the plant distribution is relatively uniform and representative. Sampling can be divided into two types: subjective sampling and objective sampling. Subjective sampling is generally carried out based on a full understanding of the plant community in a certain area and according to the research purposes of the researchers. Objective sampling can be further divided into regular sampling and random sampling. This method is generally used when the researchers lack understanding of the local plant community or when they need to use probability statistics to support their conclusions.

[0003] The shape of the sample plot can be square or circular. The former is called the quadrat method, and the quadrat method is used relatively more. The size of the sample plot generally needs to be experimented in advance. For the sample plot, first register all the plant species within the entire area of the sample plot, and then, in a certain order, expand the side length of the sample plot. Each time it is expanded, register the newly added species.

[0004] During the ecological restoration process of plateau abandoned mines, plants are used for revegetation, and there are various vegetation types such as herbs, shrubs, and arbors. In order to understand the effect of mine ecological restoration and the plant species suitable for local growth, it is necessary to conduct regular investigations and analyses on the plants within the construction scope and master their growth trends. During the field investigation of plateau abandoned mines, the geological environment of the plateau mining area is complex, the terrain is fragmented, and there are many strong wind days in the plateau mining area. However, the traditional quadrat ruler is relatively light in weight. When using the traditional measuring tape to layout the quadrat, usually multiple people are needed to assist in fixing it. It is difficult to control the accuracy of the quadrat, and it is inconvenient to use. The conventional quadrat ruler is difficult to cope with the complex geological environment of the plateau mining area. Summary of the Invention

[0005] The purpose of the present invention is to provide a rapid layout device for vegetation quadrat investigation in plateau abandoned mines, aiming to improve the problem that the quadrat ruler in the existing technology is difficult to cope with the complex geological environment of the plateau mining area.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A rapid layout device for vegetation quadrat investigation in plateau abandoned mines, characterized in that: it includes four vertical rods and four horizontal rods;

[0008] The four horizontal rods form a frame that can project a rectangle onto the ground, and adjacent two horizontal rods are connected by a vertical rod;

[0009] Two lifting grooves are formed in the outer wall of each of the vertical rods along the length direction of the corresponding vertical rod, and the two lifting grooves on each vertical rod are arranged at intervals along the circumferential direction of the corresponding vertical rod. A lifting block is slidably arranged in each lifting groove along the length direction of the corresponding lifting groove, and both ends of each cross rod are detachably connected to the corresponding lifting blocks;

[0010] Each cross rod includes a plurality of butt rods butt-jointed in sequence.

[0011] Further, one end of each butt rod is provided with a butt projection, and the end face of the other end is provided with a butt groove. A through hole is formed in the outer wall of each butt rod near the butt groove, and the through hole communicates with the corresponding butt groove, and an internal thread is arranged inside the through hole; the butt projection of each butt rod is inserted into the butt groove of another adjacent butt rod;

[0012] A butt bolt is threadedly connected in the through hole of each butt rod, and the rod portion of the butt bolt extends into the corresponding butt groove after passing through the corresponding through hole and abuts against the outer wall of the butt projection of the corresponding butt rod.

[0013] Further, a rod moving port is formed in the side wall portion of each butt rod opposite to the butt groove; after releasing the abutting restriction of the butt bolt closest to both ends of any butt rod on the corresponding butt projection, one end of the butt projection of the corresponding butt rod can move out from the rod moving port of the adjacent butt groove, and the other end can also be separated from the adjacent butt projection through its own rod moving port.

[0014] Further, the cross-sectional shapes of the lifting block and the corresponding lifting groove are both inverted T-shaped;

[0015] A connecting projection is arranged at the end of the lifting block away from the corresponding lifting groove and connected to one end of the butt groove at the end of the cross rod. The connecting projection is inserted into the butt groove at the end of the cross rod, and the rod portion of the butt bolt at the end of each cross rod extends into the corresponding butt groove and abuts against the outer wall of the connecting projection;

[0016] A connecting hole is formed in the end face of the lifting block away from the corresponding lifting groove and connected to one end of the butt projection at the end of the cross rod. One end of the butt projection at the end of each cross rod is inserted into the connecting hole of the corresponding lifting block; a connecting bolt is threadedly penetrated through the outer wall of the lifting block connected to one end of the butt projection at the end of the cross rod, and the rod portion of the connecting bolt extends into the corresponding connecting hole and abuts against the outer wall of the butt projection of the corresponding cross rod.

[0017] Further, a locking bolt is threadedly penetrated through each lifting block, and one end of the locking bolt passes through the corresponding lifting block and abuts against the inner wall of the corresponding lifting groove.

[0018] The present invention also provides a rapid layout method for vegetation quadrat surveys in plateau abandoned mines, which is applied to the rapid layout device for vegetation quadrat surveys in plateau abandoned mines described above, and includes the following steps:

[0019] S1. Prepare four crossbars and four vertical poles;

[0020] S2. Place two vertical poles flat on the ground, and then connect the two vertical poles with one crossbar;

[0021] S3. Connect the two vertical poles in step S1 with the other two crossbars one by one. At this time, the other two crossbars are erected. Connect the two erected crossbars with the other two vertical poles one by one. At this time, the two upper vertical poles are horizontal. Connect the two ends of the last crossbar with the two upper horizontal vertical poles one by one to obtain an initial quadrat frame structure;

[0022] S4. Flip the initial quadrat frame structure, and adjust the positions of the lifting blocks on each vertical pole so that the four vertical poles are all erected on the ground of the plateau abandoned mine. At this time, the quadrat survey can be started;

[0023] S5. Disconnect the connection between one end of two opposite crossbars and the corresponding vertical poles, lengthen the two crossbars, and then connect the two crossbars with the corresponding vertical poles again. At this time, the quadrat survey can be continued; Repeat step S5 to carry out subsequent quadrat surveys.

[0024] Further, in step S4, when there are protruding obstacles on the ground under any crossbar, adjust the heights of the lifting blocks at both ends of the corresponding crossbar so that the corresponding crossbar is above the protruding obstacle.

[0025] Further, in step S4, when there are protruding obstacles on the ground under any crossbar, remove the docking bolts corresponding to both ends of the docking rod that conflicts with the protruding obstacle on the corresponding crossbar, then remove the docking rod that conflicts with the protruding obstacle from the crossbar, and move the remaining part of the corresponding crossbar down to the ground on both sides of the protruding obstacle, so that the longer rod section of the crossbar can be close to the ground, which is convenient for registering the plant species within the frame structure.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. In the present invention, the device refers to the position and area of the quadrat through a frame structure, and the entire device is supported by four vertical poles placed on the ground. The device includes four support points, with the bottom end of each pole serving as a support point. By reducing the area of the support points, each support point can stand firmly on the ground, and the height of each crossbar can be adjusted, avoiding using the crossbar as the support between the device and the ground. Otherwise, when there are protruding obstacles under the crossbar, the entire device will become unstable. This is because the terrain of the plateau abandoned mine is fragmented and there are many messy mountain rocks. Inevitably, when the area of the device increases, the crossbar will encounter protruding obstacles on the ground. The higher the height of the protruding obstacle, the more unstable the device will be;

[0028] 2. The device of the present invention can be assembled by one person, reducing the participation of personnel and improving the convenience of using the device;

[0029] 3. When there is a protruding obstacle under the crossbar, if the height of the protruding obstacle is relatively high, it is not convenient for the vegetation quadrat surveyor to view the edge demarcation line of the frame structure. At this time, the docking rod on the corresponding crossbar that conflicts with the protruding obstacle can be disassembled, so that the remaining two rod segments of the corresponding crossbar move down to the ground, facilitating the vegetation quadrat surveyor to directly observe the plant distribution inside the frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0031] Figure 1 is a schematic structural diagram of the present invention;

[0032] Figure 2 is of the present invention Figure 1 enlarged view of part A;

[0033] Figure 3 is of the present invention Figure 1 enlarged view of part B;

[0034] Figure 4 is of the present invention Figure 1 enlarged view of part C.

[0035] Marks in the drawings and corresponding component names:

[0036] 1. Vertical pole; 2. Crossbar; 3. Lifting groove; 4. Lifting block; 5. Docking rod; 6. Docking protrusion; 7. Docking groove; 8. Docking bolt; 9. Rod moving port; 10. Connecting protrusion; 11. Connecting hole; 12. Locking bolt; 13. Connecting bolt; 14. Folding rod; 15. Fixed plate. Detailed implementation mode

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] A rapid layout device for vegetation quadrat investigation in plateau abandoned mines includes four vertical rods 1 and four horizontal rods 2; the four horizontal rods 2 form a frame that can project a rectangle onto the ground, and adjacent two horizontal rods 2 are connected by a vertical rod 1; two lifting grooves 3 are provided on the outer walls of all vertical rods 1 along the length direction of the corresponding vertical rod 1, and the two lifting grooves 3 on each vertical rod 1 are arranged at intervals along the circumferential direction of the corresponding vertical rod 1. A lifting block 4 is slidably arranged in each lifting groove 3 along the length direction of the corresponding lifting groove 3, and both ends of each horizontal rod 2 are detachably connected to the corresponding lifting block 4; each horizontal rod 2 includes a plurality of butt rods 5 connected in sequence.

[0039] In this solution, the device uses a frame structure to refer to the position and area of the quadrat, and the whole device is supported by vertically placing the four vertical rods 1 on the ground. The device includes four support points, and the bottom end of each vertical rod 1 serves as a support point. By reducing the area of the support points, each support point can stand on the ground, and the height of each horizontal rod 2 can be adjusted, avoiding using the horizontal rod 2 as the support between the device and the ground. Otherwise, when there are protruding obstacles under the horizontal rod 2, the whole device will be unstable. This is because the terrain of the plateau abandoned mine is fragmented and there are many messy mountain stones. Inevitably, when the area of the device increases, the horizontal rod 2 will encounter protruding obstacles on the ground. The higher the height of the protruding obstacle, the more unstable the device will be.

[0040] Further, one end of each butt rod 5 is provided with a butt projection 6, and the end face of the other end is provided with a butt groove 7. A through hole is provided on the outer wall of each butt rod 5 near the butt groove 7. The through hole communicates with the corresponding butt groove 7, and internal threads are provided inside the through hole; the butt projection 6 of each butt rod 5 is inserted into the butt groove 7 of an adjacent other butt rod 5; a butt bolt 8 is threadedly connected in the through hole of each butt rod 5. The rod portion of the butt bolt 8 passes through the corresponding through hole and extends into the corresponding butt groove 7 and abuts against the outer wall of the butt projection 6 of the corresponding butt rod 5.

[0041] By loosening the docking bolts 8, the corresponding docking rods 5 can be disassembled. By tightening the docking bolts 8, other docking rods 5 can also be connected to the end of the cross bar 2 to form a longer cross bar 2, which is convenient for changing the area of the frame structure and facilitating the investigation and registration of new plant species within the rectangular area projected by the frame structure onto the ground.

[0042] Furthermore, transfer rod openings 9 are provided at the side wall parts of the docking grooves 7 of each docking rod 5 that face each other. After releasing the tightening restriction of the docking bolts 8 closest to both ends of any docking rod 5 on the corresponding docking protrusions 6, one end of the docking protrusion 6 of the corresponding docking rod 5 can be moved out from the transfer rod opening 9 of the adjacent docking groove 7, and the other end can also be separated from the adjacent docking protrusion 6 through its own transfer rod opening 9.

[0043] When there are protruding obstacles below the cross bar 2, if the height of the protruding obstacles is relatively high, it is not convenient for the vegetation quadrat survey personnel to view the edge demarcation line of the frame structure. At this time, the docking rod 5 on the corresponding cross bar 2 that conflicts with the protruding obstacles can be disassembled, so that the remaining two rod segments of the corresponding cross bar 2 can be moved down to the ground, which is convenient for the vegetation quadrat survey personnel to directly observe the plant distribution inside the frame structure.

[0044] Furthermore, the cross-sectional shapes of the lifting blocks 4 and the corresponding lifting grooves 3 are both inverted T-shaped, so that each lifting block 4 can be tightly connected to the corresponding vertical rod 1. A connecting protrusion 10 is provided at the end of the lifting block 4 connected to one end of the docking groove 7 at the end of the cross bar 2, and the connecting protrusion 10 is inserted into the docking groove 7 at the end of the cross bar 2. The rod part of the docking bolt 8 at the end of each cross bar 2 extends into the corresponding docking groove 7 and abuts against the outer wall of the connecting protrusion 10. A connecting hole 11 is provided on the end face of the end of the lifting block 4 connected to one end of the docking protrusion 6 at the end of the cross bar 2, and one end of the docking protrusion 6 at the end of each cross bar 2 is inserted into the connecting hole 11 of the corresponding lifting block 4. A connecting bolt 13 is threadedly penetrated through the outer wall of the lifting block 4 connected to one end of the docking protrusion 6 at the end of the cross bar 2, and the rod part of the connecting bolt 13 extends into the corresponding connecting hole 11 and abuts against the outer wall of the docking protrusion 6 of the corresponding cross bar 2.

[0045] The connection structure of the docking rod 5 in the middle of the cross bar 2 and the connection structure with the corresponding lifting block 4 at the end are the same, which is convenient for unified design and manufacture of docking rods 5 of the same specification, size, and style, increasing the versatility of the usage positions of all docking rods 5, so that both ends of each docking rod 5 can be connected to the docking rod 5 and can also be connected to the lifting block 4, which plays a very important role in the operation process of frequently lengthening the cross bar 2.

[0046] Furthermore, a locking bolt 12 is threaded through each lifting block 4, and one end of the locking bolt 12 passes through the corresponding lifting block 4 and abuts against the inner wall of the corresponding lifting groove 3. The locking bolt 12 can lock each lifting block 4 at the corresponding position on the corresponding vertical rod 1, which can further improve the overall stability of the device. Especially when assembling the device, it is convenient for flipping operation.

[0047] Furthermore, each vertical rod 1 includes two folding rods 14. One ends of the two folding rods 14 are hinged together. A fixing member is provided on the vertical rod 1. When the two folding rods 14 are unfolded into a straight line, the fixing member fixes the relative positions of the two folding rods; among them, the two folding rods 14 can be connected by hinges. The fixing member includes a fixing plate 15. Bolt holes are provided on the fixing plate 15 and the two folding rods 14. The two folding rods 14 are fixed by bolts and the fixing plate 15. After the device is used, the vertical rod 1 can be folded, which is convenient for storing each component of the device, and to a certain extent improves the portability of the vertical rod 1.

[0048] More specifically, the material of the vertical rod 1 can be made of aluminum alloy, so that the vertical rod has a certain weight without being too light, enabling the device to adapt to the strong wind weather in the plateau abandoned mine; the size parameters of the vertical rod 1 can be adjusted according to actual needs, so that the entire device can be easily carried after being disassembled; scales are provided along the length direction on the outer walls of the two folding rods 14. The overall length of the vertical rod 1 usually exceeds 1m, and can be specifically adjusted according to actual needs. The cross bar 2 can be specifically made of hard plastic. After the device is assembled, the cross bar 2 mainly plays a role in connecting the four vertical rods, and the vertical rod 1 mainly plays a role in supporting and stabilizing.

[0049] This embodiment also provides a rapid layout method for vegetation quadrat surveys in plateau abandoned mines, which is applied to the above-mentioned rapid layout device for vegetation quadrat surveys in plateau abandoned mines, and includes the following steps:

[0050] S1. Prepare four cross bars 2 and four vertical rods 1; prepare all the components of the device for subsequent assembly;

[0051] S2. Place two vertical rods 1 flat on the ground, and then connect the two vertical rods 1 with a cross bar 2. The two ends of the cross bar 2 are respectively connected to the lifting blocks 4 of the two vertical rods 1; among them, after the two folding rods 14 are unfolded into a straight line, they are fixed with a fixing plate.

[0052] S3. Connect the two vertical rods 1 in step S2 with the other two crossbars 2 (the second and the third crossbars 2) one by one. At this time, the other two crossbars 2 (the second and the third crossbars 2) are in a vertical posture. Connect the two vertical crossbars 2 with the other two vertical rods 1 (the third and the fourth vertical rods 1) one by one. At this time, the two upper vertical rods 1 are in a horizontal posture. Connect the two ends of the last crossbar 2 with the lifting blocks 4 of the two upper horizontal vertical rods 1 one by one to obtain an initial quadrat frame structure.

[0053] S4. Flip the above-mentioned initial quadrat frame structure and adjust the positions of the lifting blocks 4 on each vertical rod 1 so that the four vertical rods 1 are all erected on the ground of the plateau abandoned mine. At this time, the quadrat investigation can be started. Since the area of the initial quadrat frame structure is small and its weight is also light, it is convenient for one person to complete the assembly.

[0054] S5. Disconnect the connection between one end of the two opposite crossbars 2 and the corresponding vertical rod 1, lengthen the two crossbars 2 and then connect the two crossbars 2 with the corresponding vertical rod 1 again. At this time, the quadrat investigation can be continued.

[0055] Repeat step S5 to carry out subsequent quadrat investigations.

[0056] The device of the present invention can be assembled by one person, reducing the number of personnel involved and improving the convenience of using the device. Moreover, the device of the present invention has a simple structure and is convenient to carry, assemble and use.

[0057] Further, in step S4, when there are protruding obstacles on the ground under any crossbar 2, adjust the heights of the lifting blocks 4 at both ends of the corresponding crossbar 2 so that the corresponding crossbar 2 is located above the protruding obstacle, and the corresponding crossbar 2 can be supported by the protruding obstacle.

[0058] The protruding obstacles include topographic obstacles and vegetation obstacles, which are convenient to integrate and adapt to the complex environment on the ground of the plateau abandoned mine, and reduce the influence of the protruding obstacles in the environment on the layout of the device. Topographic obstacles are usually the terrain such as rock piles and soil piles protruding from the ground due to previous construction on the plateau abandoned mine. Among the vegetation obstacles, for example, shrubs, which have no obvious main trunk and usually grow in clusters, are inconvenient to avoid when encountering such vegetation obstacles.

[0059] Further, in step S4, when there are protruding obstacles on the ground below any cross bar 2, the docking bolts 8 corresponding to both ends of the docking rod 5 that conflicts with the protruding obstacle on the corresponding cross bar 2 are disassembled, and then the docking rod 5 that conflicts with the protruding obstacle is disassembled from the cross bar 2, and the remaining part of the corresponding cross bar 2 is moved down to the ground on both sides of the protruding obstacle; the docking rod 5 is convenient to disassemble, and since the lifting block 4 can be lifted and lowered, the remaining rod section of the cross bar 2 can be quickly moved down, enabling the longer rod section of the cross bar 2 to be closer to the ground, which is convenient for the vegetation quadrat surveyors to register the plant species within the frame structure.

[0060] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rapid layout device for vegetation quadrat investigation in abandoned mines on the plateau, characterized in that: It includes four vertical rods (1) and four cross rods (2); The four cross rods (2) form a frame that can project a rectangle onto the ground, and adjacent two cross rods (2) are connected by a vertical rod (1); On the outer walls of all the vertical rods (1), two lifting grooves (3) are opened along the length direction of the corresponding vertical rod (1), and the two lifting grooves (3) on each vertical rod (1) are arranged at intervals along the circumferential direction of the corresponding vertical rod (1). A lifting block (4) is slidably arranged in each lifting groove (3) along the length direction of the corresponding lifting groove (3). Both ends of each cross rod (2) are detachably connected to the corresponding lifting block (4); Each cross rod (2) includes multiple butt rods (5) butt-jointed in sequence.

2. The rapid layout device for vegetation quadrat investigation of plateau abandoned mines according to claim 1, wherein: One end of each butt rod (5) is provided with a butt projection (6), and the end face of the other end is provided with a butt groove (7). A through hole is opened on the outer wall of each butt rod (5) near the butt groove (7), and the through hole communicates with the corresponding butt groove (7), and an internal thread is arranged inside the through hole; the butt projection (6) of each butt rod (5) is inserted into the butt groove (7) of an adjacent other butt rod (5); A butt bolt (8) is threadedly connected in the through hole of each butt rod (5). The rod part of the butt bolt (8) extends into the corresponding butt groove (7) after passing through the corresponding through hole and abuts against the outer wall of the butt projection (6) of the corresponding butt rod (5).

3. The rapid layout device for vegetation quadrat investigation of plateau abandoned mines according to claim 2, characterized in that: A rod moving port (9) is opened at the side wall part of each butt rod (5) opposite to the butt groove (7); after releasing the abutting restriction of the butt bolt (8) closest to both ends of any butt rod (5) on the corresponding butt projection (6), one end of the butt projection (6) of the corresponding butt rod (5) can move out from the rod moving port (9) of the adjacent butt groove (7), and the other end can also be separated from the adjacent butt projection (6) through its own rod moving port (9).

4. The rapid layout device for vegetation quadrat investigation of plateau abandoned mines according to claim 3, characterized in that: The cross-sectional shapes of the lifting block (4) and the corresponding lifting groove (3) are both inverted T-shaped; A connecting projection (10) is arranged at the end of the lifting block (4) far from the corresponding lifting groove (3) and connected to one end of the butt groove (7) at the end of the cross rod (2). The connecting projection (10) is inserted into the butt groove (7) at the end of the cross rod (2), and the rod part of the butt bolt (8) at the end of each cross rod (2) extends into the corresponding butt groove (7) and abuts against the outer wall of the connecting projection (10); A connecting hole (11) is opened on the end face of the end of the lifting block (4) far from the corresponding lifting groove (3) and connected to one end of the butt projection (6) at the end of the cross rod (2). One end of the butt projection (6) at the end of each cross rod (2) is inserted into the connecting hole (11) of the corresponding lifting block (4); a connecting bolt (13) is threadedly penetrated through the outer wall of the lifting block (4) connected to one end of the butt projection (6) at the end of the cross rod (2). The rod part of the connecting bolt (13) extends into the corresponding connecting hole (11) and abuts against the outer wall of the butt projection (6) of the corresponding cross rod (2).

5. The rapid layout device for vegetation quadrat investigation of plateau abandoned mines according to claim 4, characterized in that: A locking bolt (12) is threaded through each lifting block (4), and one end of the locking bolt (12) passes through the corresponding lifting block (4) and abuts against the inner wall of the corresponding lifting groove (3).

6. The rapid layout device for investigating vegetation quadrats in plateau abandoned mines according to claim 5, characterized in that: Each vertical rod (1) includes two folding rods (14). One ends of the two folding rods (14) are hinged together. A fixing member is provided on the vertical rod (1). When the two folding rods (14) are unfolded into a straight line, the fixing member fixes the relative positions of the two folding rods (14).

7. A rapid layout method for vegetation quadrat surveys in abandoned mines on the plateau, characterized in that: The method for quickly arranging a vegetation quadrat survey for a plateau abandoned mine applied to any one of claims 1-6 includes the following steps: S1. Prepare four cross bars (2) and four vertical rods (1); S2. Place two vertical rods (1) flat on the ground, and then connect the two vertical rods (1) with one cross bar (2); S3. Connect the two vertical rods (1) in step S1 with the other two cross bars (2) one by one. At this time, the other two cross bars (2) are erected. Connect the two erected cross bars (2) with the other two vertical rods (1) one by one. At this time, the two upper vertical rods (1) are horizontal. Connect the two ends of the last cross bar (2) with the two upper horizontal vertical rods (1) one by one to obtain an initial quadrat frame structure; S4. Flip the initial quadrat frame structure, and adjust the positions of the lifting blocks (4) on each vertical rod (1) so that the four vertical rods (1) are all erected on the ground of the plateau abandoned mine. At this time, the quadrat survey can be started; S5. Disconnect the connection between one end of two opposite cross bars (2) and the corresponding vertical rod (1), lengthen the two cross bars (2), and then connect the two cross bars (2) with the corresponding vertical rod (1) again. At this time, the quadrat survey can be continued; Repeat step S5 to carry out subsequent quadrat surveys.

8. A rapid layout method for vegetation quadrat investigation in plateau abandoned mines according to claim 7, characterized in that: In step S4, when there is a protruding obstacle on the ground under any cross bar (2), adjust the heights of the lifting blocks (4) at both ends of the corresponding cross bar (2) so that the corresponding cross bar (2) is located above the protruding obstacle.

9. A rapid layout method for vegetation quadrat surveys in abandoned mines on the plateau according to claim 7, characterized in that: In step S4, when there is a protruding obstacle on the ground under any cross bar (2), disassemble the docking bolts (8) corresponding to both ends of the docking rod (5) that conflicts with the protruding obstacle on the corresponding cross bar (2), then disassemble the docking rod (5) that conflicts with the protruding obstacle from the cross bar (2), and move the remaining part of the corresponding cross bar (2) down to the ground on both sides of the protruding obstacle so that the longer rod section of the cross bar (2) can be close to the ground, facilitating the registration of plant species within the frame structure.

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