Trunk multi-time scale radial change and forest environment factor monitoring system and method

Abstract

The invention discloses a tree trunk multi-time scale radial change and forest environmental factor monitoring system and method in the technical field of forest ecosystem research, and the system comprises a fixed part which is fixed on a tree trunk and is provided with a measuring device, an environment detection device and a processing device; a tightening assembly is arranged on the fixing piece; the tightening assembly comprises a mounting base and an air bag arranged on the mounting base, an air storage groove is formed in the mounting base, a push plate and an elastic piece connected with the push plate are arranged in the air storage groove in a sliding mode, the air storage groove communicates with the air bag through a valve, and a detection assembly is arranged on the mounting base. The processing equipment controls the valve to be opened, air in the air storage tank is guided into the air bag, the air bag is inflated and expanded, the fixing piece is tightened, the fixing piece is prevented from continuously moving downwards, and the situation that the sensor of the measuring equipment is pulled due to the fact that the fixing piece continuously moves downwards is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of forest ecosystem research, and particularly to a monitoring system and method for multi-time scale radial changes of tree trunks and forest environmental factors. Background Technique

[0002] Forest ecosystems are an important part of the global carbon and water cycles, and their health status and dynamic changes have important impacts on climate change, biodiversity conservation, and sustainable management of forest resources. The radial change of the tree trunk is a key indicator reflecting the growth dynamics of trees, which can intuitively reflect the response of trees to the environment (such as water use, carbon absorption, etc.); at the same time, forest environmental factors (such as temperature, humidity, light, soil moisture, etc.) are important driving factors affecting tree growth and ecosystem functions; therefore, real-time and continuous monitoring of the radial change of the tree trunk and forest environmental factors is of great significance for deeply understanding forest ecological processes, predicting the impacts of climate change, and formulating scientific management strategies;

[0003] When measuring the radial change of the tree trunk, generally, a tree trunk radial change recorder is strapped to the tree trunk by a stainless steel band, and the sensor probe of the tree trunk radial change recorder is attached to the tree trunk for monitoring. However, this fixing method is relatively single and lacks protective measures. When an animal stays on the tree trunk radial change recorder, it is easy to cause the stainless steel band to move downward (or other reasons such as an animal climbing the tree trunk and exerting pressure on the stainless steel band cause the stainless steel band to move downward), and as the downward movement amplitude increases, it will pull the sensor probe, causing it to deviate from the original position, seriously affecting the accuracy and reliability of data collection. Summary of the Invention

[0004] The purpose of the present invention is to provide a monitoring system and method for multi-time scale radial changes of tree trunks and forest environmental factors to solve the problems of relatively single fixing method of the tree trunk radial change recorder and lack of protective measures in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors, including: a fixing member for fixing on the tree trunk, the fixing member is provided with a measuring device for measuring the radial of the tree trunk, an environmental detection device for collecting forest environmental information, and a processing device, and the processing device is used for receiving the information of the measuring device and the environmental detection device for processing and analysis to obtain the relationship between the multi-time scale radial changes of the tree trunk and the forest environmental factors;

[0006] The fixing member is provided with a tightening assembly;

[0007] Among them, the tightening component includes a mounting base and an airbag provided on the mounting base. A gas storage tank is provided inside the mounting base. A push plate and an elastic member connected to the push plate are slidably provided inside the gas storage tank. The gas storage tank is communicated with the airbag through a valve. A detection component is provided on the mounting base. When the detection component detects that the fixing member moves downward on the tree trunk, the processing device is controlled to open the valve.

[0008] Preferably, the detection component includes a support rod provided on the mounting base, a roller provided on the support rod, and a detector for detecting the rotation of the roller.

[0009] Preferably, a slot is provided on the mounting base. A limit insertion block and a second driving member for driving the limit insertion block to move are provided inside the slot. The second driving member is controlled to start by the processing device when the detection component detects that the fixing member moves downward on the tree trunk.

[0010] Preferably, the limit insertion block includes a moving block, a pointed block hinged to the moving block, a push rod slidably provided on the moving block and used for pushing the pointed block to rotate, and an elastic element provided between the push rod and the moving block;

[0011] Among them, a limit block for restricting the movement of the push rod and a return spring connected to the limit block are slidably provided on the moving block. A storage groove for storing the limit block is provided inside the slot.

[0012] Preferably, the fixing member includes a mounting block, two flexible belts respectively provided on both sides of the mounting block, and two connecting blocks respectively provided at the ends of the two flexible belts. The two connecting blocks are detachably connected;

[0013] Among them, a support seat is provided on the mounting block. The measuring device, the environmental detection device and the processing device are all provided on the support seat.

[0014] Preferably, a storage groove is provided on the mounting block. The end of the flexible belt extends into the storage groove. A winding motor for winding the flexible belt into the storage groove is provided on the mounting block.

[0015] Preferably, a flexible connecting member is provided on the connecting block, and a counterweight member is provided at the end of the flexible connecting member.

[0016] Preferably, a winding rod is provided inside the connecting block. The flexible connecting member is wound around the winding rod. A tensioning block for fitting with the flexible connecting member and a spring member connected to the tensioning block are slidably provided on the connecting block;

[0017] Among them, a plurality of slots arranged in sequence along the moving direction of the tensioning block are provided on the side wall of the tensioning block. A plug block for inserting into the slots is slidably provided on the connecting block. The side wall of the plug block away from the flexible connecting member is an arc surface.

[0018] Preferably, a monitoring method for multi-time scale radial changes of tree trunks and forest environmental factors uses the above-mentioned monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors, and includes the following steps:

[0019] S1: Fix the fixing member on the tree trunk to be detected, and make the sensor probe of the measuring device fit with the tree trunk;

[0020] S2: The measuring device regularly collects the radial data of the tree trunk, the environmental detection device regularly collects the environmental data of the forest, and the processing device processes and analyzes the data collected by the measuring device and the environmental detection device to obtain the relationship between the multi-time scale radial changes of the tree trunk and the forest environmental factors;

[0021] S3: When the detection component detects that the fixing member moves downward on the tree trunk, the processing device is controlled to open the valve. Then, under the action of the elastic member, the push plate pushes the gas inside the air storage tank into the inside of the airbag, causing the airbag to inflate and expand to prevent the fixing member from moving downward.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: By detecting whether the fixing member moves downward on the tree trunk through the detection component, and when it is detected that the fixing member moves downward, the processing device controls the valve to open, introduces the gas inside the air storage tank into the inside of the airbag, causes the airbag to inflate and expand, tightens the fixing member, and prevents the fixing member from continuing to move downward, avoiding the sensor of the measuring device from being pulled due to the continuous downward movement of the fixing member, ensuring the normal contact between the sensor and the tree, and guaranteeing the accuracy of data collection. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors of the present invention;

[0024] Figure 2 is a schematic structural diagram of the connection between the mounting block and the support seat of the present invention;

[0025] Figure 3 is a schematic structural diagram of the tightening component of the present invention;

[0026] Figure 4 is a schematic cross-sectional view of the connection between the mounting seat and the airbag of the present invention;

[0027] Figure 5 is of the present invention Figure 4 Schematic enlarged view of the structure at A in;

[0028] Figure 6 is a schematic cross-sectional view of the connection between the connecting block and the flexible connecting member of the present invention;

[0029] Figure 7 is of the present invention Figure 6 Schematic enlarged view of the structure at B in.

[0030] In the figure: 1, fixing member; 101, mounting block; 102, flexible belt; 103, connecting block; 104, winding motor; 2, support base; 3, measuring device; 4, processing device; 5, first driving member; 6, baffle; 7, photovoltaic module; 8, tightening assembly; 81, mounting seat; 82, airbag; 83, support rod; 84, roller; 85, limiting insertion block; 851, moving block; 852, push rod; 853, pointed block; 854, elastic element; 855, limiting block; 856, storage groove; 86, second driving member; 87, gas storage tank; 88, push plate; 89, elastic member; 810, valve; 811, detector; 9, flexible connecting member; 10, counterweight member; 11, environmental detection device; 12, winding rod; 13, tensioning block; 14, spring member; 15, insertion block; 16, insertion slot. Specific embodiments

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below 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.

[0032] Embodiment 1

[0033] Please refer to Figure 2 , a monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors, comprising: a fixing member 1, the fixing member 1 includes a mounting block 101, two flexible belts 102 (metal belts, such as steel materials) respectively arranged on both sides of the mounting block 101, and two connecting blocks 103 respectively arranged at the ends of the two flexible belts 102, and the two connecting blocks 103 are detachably connected (such as realized by the cooperation of a clamping block and a clamping groove or by the cooperation of a bolt and a screw hole); a support base 2 is arranged on the mounting block 101, a measuring device 3 (a tree trunk radial change recorder, which includes two parts: a sensor and a data collector, and this device belongs to existing equipment and will not be described in detail here) and an environmental detection device 11 (the environmental detection device 11 refers to a device for detecting the air temperature, relative humidity, precipitation and soil temperature of the forest, and the above devices also belong to existing equipment and will not be described in detail here) are installed on the top wall of the support base 2, and a processing device 4 (such as a computer) is installed on the bottom wall of the support base 2.

[0034] It should be noted that the data collector of the measuring device 3 is installed on the top of the support base 2. The sensor of the measuring device 3 is fixed to the tree trunk through a fixing workpiece, such as a bundling belt. The probe of the sensor fits against the surface of the tree trunk, and a soft gasket can be placed between the probe of the sensor and the bark to prevent damage to the bark and ensure close contact. The data collector and the sensor of the measuring device 3 are fixed separately, and after fixing, the connecting line between the data collector and the sensor is in a relaxed state, so that the fixing member 1 will not pull the sensor when it moves downward slightly.

[0035] In this embodiment, as a further optimized solution, please refer to Figure 2 , a storage groove is formed inside the mounting block 101. A winding motor 104 is installed on the mounting block 101. The output shaft of the winding motor 104 extends into the inner cavity of the storage groove. One end of the flexible belt 102 extends into the inner cavity of the storage groove and is connected to the output shaft of the winding motor 104. By operating the winding motor 104, the flexible belt 102 is wound around the output shaft of the winding motor 104 or the flexible belt 102 is released from the output shaft of the winding motor 104 to adjust the length of the flexible belt 102 outside, so that the fixing member 1 can be fixed to tree trunks of different thicknesses.

[0036] In this embodiment, as a further optimized solution, please refer to Figure 1 , a protective cover is installed on the top wall of the support base 2. The protective cover covers the measuring device 3 and the environmental detection device 11 on the top of the support base 2. The protective cover includes a plurality of railings and a top plate installed on the tops of the plurality of railings. A photovoltaic module is installed on the top wall of the top plate for supplying power to the electrical equipment in the monitoring system. A first driving member 5 (such as an electric telescopic rod) is installed on the top of the top plate. A baffle 6 is installed on the moving end of the first driving member 5. The baffle 6 is located on the top of the photovoltaic module, and a cleaning brush is installed at the bottom of the baffle 6. The first driving member 5 drives the baffle 6 to move back and forth on the top of the top plate to prevent animals from staying above the top plate and reduce the probability of the fixing member 1 moving downward. At the same time, the moving baffle 6 will cause the cleaning brush to clean the top of the photovoltaic module.

[0037] Please refer to Figure 2 , a tightening assembly 8 is provided on the side wall of the flexible belt 102;

[0038] Among them, please refer to Figure 2 、 Figure 3 and Figure 4, the tightening assembly 8 includes a mounting base 81 and an airbag 82 provided on the mounting base 81. The mounting base 81 is mounted on the flexible belt 102, and the airbag 82 is located inside the flexible belt 102 for fitting against the tree trunk. A gas storage tank 87 is provided in the inner cavity of the mounting base 81, and the inside of the gas storage tank 87 is filled with gas (such as air). A push plate 88 is slidably provided in the inner cavity of the gas storage tank 87 (a sealing treatment is performed between the push plate 88 and the gas storage tank 87 to ensure that no gas passes through the gap between the push plate 88 and the gas storage tank 87 during the movement of the push plate 88). An elastic member 89 (spring) is provided between the gas storage tank 87 and the push plate 88. The gas storage tank 87 is communicated with the airbag 82 through a valve 810 (solenoid valve). A detection assembly is provided on the mounting base 81. The detection assembly includes a support rod 83, a roller 84 and a detector 811. The support rod 83 is provided on the side wall of the mounting base 81 facing the tree trunk, and the roller 84 is provided at the end of the support rod 83 away from the mounting base 81. The roller 84 is in contact with the outer wall of the tree trunk. The detector 811 is an encoder for detecting whether the roller 84 rotates. The detector 811 is connected to the processing device 4 to achieve information transmission.

[0039] It should be noted that the number of the tightening assemblies 8 can be multiple, and specific settings are made according to actual needs.

[0040] In this embodiment, as a further optimized solution, please refer to Figure 4 , a mounting hole is provided on the side of the mounting base 81 facing the tree trunk, and the support rod 83 is slidably inserted into the inner cavity of the mounting hole. A spring is provided between the support rod 83 and the mounting hole; the spring provides a supporting force for the support rod 83 to push the support rod 83 towards the tree trunk to ensure that the roller 84 can be in contact with the outer wall of the tree trunk, so that the movement of the fixing member 1 downward can be detected.

[0041] A monitoring method for the radial variation of tree trunks on multiple time scales and forest environmental factors includes the following steps:

[0042] First, put the fixing member 1 on the tree trunk to be detected. Then, after adjusting the height of the fixing member 1, connect the two connecting blocks 103 to fix the fixing member 1 on the tree trunk. Then, fit the sensor probe of the measuring device 3 against the tree trunk and fix it with a bundling belt.

[0043] Second, the measuring device 3 regularly collects the radial data of the tree trunk, and the environmental detection device 11 regularly collects the environmental data of the forest. The processing device 4 processes and analyzes the data collected by the measuring device 3 and the environmental detection device 11 to obtain the relationship between the radial variation of the tree trunk on multiple time scales and the forest environmental factors.

[0044] Thirdly, when the fixing member 1 moves downward on the tree trunk, the fixing member 1 drives the roller 84 of the detection assembly to move downward, causing it to rotate when walking on the tree trunk. After the detector 811 detects the information of the rotation of the roller 84, the processing device 4 controls the valve 810 to open, connecting the airbag 82 with the air storage tank 87. The push plate 88 moves under the action of the elastic member 89, introducing some of the gas inside the air storage tank 87 into the inside of the airbag 82, increasing the inflation amplitude of the airbag 82, and tightening the fixing member 1 to prevent the fixing member 1 from continuing to move downward.

[0045] It should be noted that in order to enable the staff to understand the situation of the downward movement of the fixing member 1, after the detector 811 detects the information of the rotation of the roller 84, the processing device 4 will send a warning message to the staff at a distance.

[0046] In this embodiment, as a further optimized solution, please refer to Figure 3 and Figure 4 , a slot is formed on the side wall of the mounting seat 81 facing the tree trunk. A limiting plug 85 is slidably inserted into the inner cavity of the slot. A second driving member 86 (electric telescopic rod) is installed in the inner cavity of the slot. The moving end of the second driving member 86 is connected to the limiting plug 85. When it is detected that the fixing member 1 moves downward on the tree trunk, the processing device 4 controls the second driving member 86 to work, pushing the limiting plug 85 to move outward from the slot, so that the tip of the limiting plug 85 is in close contact with the outer wall of the tree trunk, used to prevent the fixing member 1 from continuing to fall and ensure that the sensor of the measuring device 3 will not be pulled.

[0047] In this embodiment, as a further optimized solution, please refer to Figure 4 and Figure 5, the limit insertion block 85 includes a moving block 851, a pointed block 853, and a push rod 852; the moving block 851 is slidably inserted into the slotted groove, and the pointed block 853 is hinged to the side wall of the moving block 851 away from the mounting seat 81 (the pointed block 853 can rotate up and down, and a spring is provided between the pointed block 853 and the moving block 851 to prevent the pointed block 853 from automatically rotating). An opening is formed on the side wall of the moving block 851 facing the pointed block 853. The push rod 852 is slidably arranged in the opening, and an elastic element 854 (spring) is installed between the push rod 852 and the opening. A through hole is formed on the inner side wall of the opening, and a limit block 855 is slidably arranged in the through hole. A return spring is installed between the limit block 855 and the through hole. A limit groove is formed on the side wall of the push rod 852, and the end of the limit block 855 is inserted into the limit groove to limit the movement of the push rod 852. A receiving groove 856 is formed on the inner side wall of the slotted groove, and the receiving groove 856 extends along the moving direction of the moving block 851; when the second driving member 86 pushes the limit insertion block 85 to move, the limit block 855 will enter the inner cavity of the receiving groove 856, so that the restriction on the limit block 855 is released. Under the action of the return spring, the limit block 855 moves out of the limit groove, releasing the restriction on the push rod 852, so that the push rod 852 moves outward from the opening under the action of the elastic element 854, pushing the pointed block 853 to rotate downward, so that the pointed block 853 exerts a downward pressure on the tree trunk, further preventing the fixing member 1 from falling.

[0048] Embodiment 2

[0049] As a further optimized solution of Embodiment 1, please refer to Figure 2 , a flexible connecting member 9 (such as a rope, but not limited to a rope) is provided on the connecting block 103, and a counterweight member 10 (such as a metal block) is provided at the bottom end of the flexible connecting member 9. The counterweight member 10 and the support seat 2 are symmetrically distributed on both sides of the fixing member 1; when the fixing member 1 is fixed on the tree trunk, the counterweight member 10 contacts the ground and exerts a pulling force on the fixing member 1, so that the fixing member 1 is in force balance and prevents it from being skewed or moved downward due to uneven force.

[0050] In this embodiment, as a further optimized solution, please refer to Figure 6 and Figure 7, a groove is formed inside the connecting block 103, a winding rod 12 is rotatably arranged in the inner cavity of the groove, one end of the flexible connecting piece 9 is wound around the outer wall of the winding rod 12, and by rotating the winding rod 12, the length of the flexible connecting piece 9 outside can be adjusted to ensure that the counterweight 10 can contact the ground to apply a balancing force to the fixing piece 1; a tensioning block 13 is slidably arranged in the groove, a spring piece 14 is installed between the tensioning block 13 and the groove, the end of the tensioning block 13 is attached to the flexible connecting piece 9, and the spring piece 14 provides a thrust force to the tensioning block 13 to make it move and fit with the flexible connecting piece 9, so as to tighten the flexible connecting piece 9 and prevent the flexible connecting piece 9 from loosening and causing the counterweight 10 to be unable to apply a force to the fixing piece 1; a plurality of slots 16 are formed in the bottom wall of the tensioning block 13, and the plurality of slots 16 are arranged in sequence along the moving direction of the tensioning block 13. A plug 15 (the plug 15 can move up and down) is slidably arranged on the connecting block 103, a spring is installed between the plug 15 and the connecting block 103, the end of the plug 15 is inserted into one of the slots 16, and the left side wall of the top end of the plug 15 is an arc surface; when the spring piece 14 pushes the tensioning block 13 to move to tighten the flexible connecting piece 9, the inner wall of the slot 16 contacts the arc surface of the plug 15 to squeeze the plug 15 out of the slot 16 to ensure that the tensioning block 13 can move normally to tighten the flexible connecting piece 9; since the plug 15 is inserted into the slot 16, the tensioning block 13 after moving cannot move in the reverse direction, so that the acting force of the counterweight 10 can directly act on the fixing piece 1.

[0051] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring system for multi-time-scale radial variations of tree trunks and forest environmental factors, characterized in that: Including: A fixing member (1) for fixing on a tree trunk, on which a measuring device (3) for measuring the radial direction of the tree trunk, an environmental detection device (11) for collecting forest environment information, and a processing device (4) are provided. The processing device (4) is used to receive the information of the measuring device (3) and the environmental detection device (11) for processing and analysis to obtain the relationship between the radial changes of the tree trunk at multiple time scales and forest environmental factors; A tightening assembly (8) is provided on the fixing member (1); Wherein, the tightening assembly (8) includes a mounting seat (81) and an airbag (82) provided on the mounting seat (81). A gas storage tank (87) is provided in the mounting seat (81). A push plate (88) and an elastic member (89) connected to the push plate (88) are slidably provided in the gas storage tank (87). The gas storage tank (87) is communicated with the airbag (82) through a valve (810). A detection assembly is provided on the mounting seat (81). When the detection assembly detects that the fixing member (1) moves downward on the tree trunk, the processing device (4) controls the valve (810) to open.

2. The monitoring system for multi-time-scale radial variations of tree trunks and forest environmental factors according to claim 1, characterized in that: The detection assembly includes a support rod (83) provided on the mounting seat (81), a roller (84) provided on the support rod (83), and a detector (811) for detecting the rotation of the roller (84).

3. The monitoring system for multi-time scale radial variations of tree trunks and forest environmental factors according to claim 1, wherein: A slot is provided on the mounting seat (81). A limit insertion block (85) and a second driving member (86) for driving the limit insertion block (85) to move are provided in the slot. The second driving member (86) is controlled to start by the processing device (4) when the detection assembly detects that the fixing member (1) moves downward on the tree trunk.

4. The monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors according to claim 3, wherein: The limit insertion block (85) includes a moving block (851), a pointed block (853) hinged on the moving block (851), a push rod (852) slidably provided on the moving block (851) and used for pushing the pointed block (853) to rotate, and an elastic element (854) provided between the push rod (852) and the moving block (851); Wherein, a limit block (855) for restricting the movement of the push rod (852) and a return spring connected to the limit block (855) are slidably provided on the moving block (851). A storage groove (856) for storing the limit block (855) is provided in the slot.

5. A monitoring system for multi-time scale radial variations of tree trunks and forest environmental factors according to claim 1, characterized in that: The fixing member (1) includes a mounting block (101), two flexible belts (102) respectively provided on both sides of the mounting block (101), and two connecting blocks (103) respectively provided at the ends of the two flexible belts (102). The two connecting blocks (103) are detachably connected; Wherein, a support seat (2) is provided on the mounting block (101). The measuring device (3), the environmental detection device (11), and the processing device (4) are all provided on the support seat (2).

6. The monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors according to claim 5, characterized in that: A storage groove is provided on the mounting block (101). The end of the flexible belt (102) extends into the storage groove. A winding motor (104) for winding the flexible belt (102) into the storage groove is provided on the mounting block (101).

7. A monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors according to claim 5, characterized in that: A flexible connecting member (9) is provided on the connecting block (103), and a counterweight member (10) is provided at the end of the flexible connecting member (9).

8. A monitoring system for multi-time scale radial changes of tree trunks and forest environmental factors according to claim 7, characterized in that: A winding rod (12) is provided in the connecting block (103), the flexible connecting member (9) is wound around the winding rod (12), a tensioning block (13) for fitting with the flexible connecting member (9) and a spring member (14) connected to the tensioning block (13) are slidably provided on the connecting block (103); Wherein, a plurality of slots (16) arranged in sequence along the moving direction of the tensioning block (13) are provided on the side wall of the tensioning block (13), a plug block (15) for inserting into the slots (16) is slidably provided on the connecting block (103), and the side wall of the plug block (15) away from the flexible connecting member (9) is an arc surface.

9. A method for monitoring the radial variation of tree trunks at multiple time scales and forest environmental factors, using a monitoring system for the radial variation of tree trunks at multiple time scales and forest environmental factors according to any one of claims 1-8, characterized in that: Comprising the following steps: S1: Fix the fixing member (1) on the trunk to be detected, and make the sensor probe of the measuring device (3) fit with the trunk; S2: The measuring device (3) regularly collects the radial data of the trunk, the environmental detection device (11) regularly collects the environmental data of the forest, and the processing device (4) processes and analyzes the data collected by the measuring device (3) and the environmental detection device (11) to obtain the relationship between the radial changes of the trunk at multiple time scales and the forest environmental factors; S3: When the detection component detects that the fixing member (1) moves downward on the trunk, the processing device (4) controls the valve (810) to open, and then the push plate (88) pushes the gas inside the air storage tank (87) into the inside of the airbag (82) under the action of the elastic member (89), so that the airbag (82) inflates and expands to prevent the fixing member (1) from moving downward.

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