Forest soil carbon sink metering and monitoring device and method thereof

Abstract

The invention relates to the technical field of carbon sink metering and monitoring, and discloses a forest soil carbon sink metering and monitoring device which comprises a vehicle body and a mounting plate, a turntable is rotatably connected in the mounting plate, a sampling cylinder is fixedly mounted on the inner wall of the turntable, and a mounting frame is fixedly mounted at the top of the mounting plate. According to the forest soil carbon sink metering and monitoring device and method, the excavation sampling assembly is arranged, and after the excavation sampling assembly is used, under starting of a servo motor and meshing transmission of an inner gear ring and a transmission gear, a plurality of excavation shovels can rotate to the lower surface of a sampling cylinder together; according to the soil sampling device, a plurality of digging shovels are arranged in the sampling barrel, and are matched with starting of a servo motor and meshing transmission of a driving gear and an outer gear ring to rotate around the axis of the sampling barrel together, so that soil in the sampling barrel is separated from soil in a sampling area, and cylindrical sampling soil in the sampling barrel can be completely taken out under lifting of the plurality of digging shovels; and the accuracy of forest soil carbon sink metering and monitoring data is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon sink measurement and monitoring, and in particular to a forest soil carbon sink measurement and monitoring device and method thereof. Background Art

[0002] Carbon sink measurement refers to the process of quantitatively evaluating the carbon storage and absorption in an ecosystem through scientific methods and technical means. Natural ecosystems such as forests, grasslands, and wetlands absorb carbon dioxide from the atmosphere through photosynthesis and have significant carbon sink functions. Carbon sink measurement is of great significance for achieving the "dual carbon" goals. It can help evaluate the carbon fixation capacity of different ecosystems and provide a scientific basis for formulating effective emission reduction measures.

[0003] After retrieval, Chinese patent CN117147210A was found, which disclosed a land use carbon sink assessment and collection system based on multi-source spatial data. By filling the storage tube and the telescopic water bag with water, the multi-stage cylinder can be started, and the piston rod of the multi-stage cylinder drives the first connecting rod to move downward, the first connecting rod drives the motor cover to move downward, the motor cover drives the second connecting rod to move downward, and the second connecting rod drives the drill bit to move downward. The bottom end of the drill bit passes through the drill hole and is inserted into the cart. When moving downward, the slot on the drill bit is adjusted so that the slot is stuck in the fixed frame. At the same time, the bottom end of the drill bit covers the telescopic water bag, and the inner wall of the drill bit will resist the screw cover on the telescopic water bag. The telescopic water bag will shrink when it is squeezed, and the water in the telescopic water bag will It will be sprayed out from multiple spray holes, and the sprayed water will adhere to the inner wall of the drill bit, reducing the shear and compressive strength of the soil, thereby reducing the resistance during the drilling process, so that the soil in different spatial environments can be collected more quickly and effectively. It is especially suitable for the treatment of hard soil and greatly improves the sampling efficiency. It can be seen that this patent improves the sampling efficiency by softening the soil. However, the soil morphology collected in this way will change, and the sampled soil cannot be completely removed, which will lead to a large error in the calculated carbon sink amount, and the accuracy of carbon sink measurement and monitoring is low. In order to remove the collected soil samples more completely, a forest soil carbon sink measurement and monitoring device and method are proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a forest soil carbon sink measurement and monitoring device and method thereof, which has the advantage of being able to easily take out the sampled soil samples relatively completely.

[0005] To achieve the above object of facilitating the relatively complete extraction of the sampled soil samples, the present invention provides the following technical solution: A forest soil carbon sink measurement and monitoring device, including a vehicle body and a mounting plate, a turntable is rotatably connected in the mounting plate, a sampling cylinder is fixedly installed on the inner wall of the turntable, a mounting frame is fixedly installed on the top of the mounting plate, a fixing frame is fixedly installed on the top of the turntable, and an excavation sampling assembly for relatively completely sampling the soil to improve the accuracy of forest soil measurement and monitoring is provided on the turntable, mounting frame and fixing frame.

[0006] Further, the excavation sampling assembly includes a movable shaft, an excavation shovel, an internal gear ring, a transmission gear, a servo motor, an external gear ring, a servo motor and a driving gear. The movable shaft is rotatably connected in the turntable, the excavation shovel is fixedly installed at the bottom of the movable shaft, the internal gear ring is rotatably connected to the top of the turntable, the transmission gear is fixedly installed on the outer surface of the movable shaft, the internal gear ring is internally meshed with the transmission gear, the servo motor is fixedly installed on the top of the fixing frame, the output shaft of the servo motor is fixedly installed with the movable shaft, the external gear ring is fixedly installed on the outer surface of the turntable, the servo motor is fixedly installed on the top of the mounting frame, the driving gear is fixedly installed on the output shaft of the servo motor, and the external gear ring is externally meshed with the driving gear.

[0007] Further, the shapes of the mounting frame and the fixing frame are both C-shaped, the bottom of the excavation shovel has an insertion edge, the shape of the insertion edge is a triangular pyramid, the upper surface of the excavation shovel is flush with the lower surface of the sampling cylinder, the external gear ring is located outside the internal gear ring, and the driving gear is located inside the mounting frame.

[0008] Further, rollers are installed at the bottom of the vehicle body, a handle is fixedly installed on the side wall of the vehicle body, a grip sleeve is fixedly installed on the outer surface of the handle, and a scale is embedded in the inner wall of the sampling cylinder.

[0009] Further, a support block rotatably connected to the movable shaft is fixedly installed on the outer surface of the sampling cylinder, and a lifting assembly is provided on the vehicle body. The lifting assembly includes a hydraulic cylinder and a connecting plate. The hydraulic cylinder is fixedly installed on the top of the vehicle body, and the connecting plate is fixedly installed at the output end of the hydraulic cylinder.

[0010] Further, a guide rod slidably connected to the top wall of the vehicle body is fixedly installed on the top of the connecting plate. A limit block is fixedly installed on the top of the guide rod. Fixing plates are fixedly installed on both sides of the bottom of the connecting plate. A vertical rod is fixedly installed at the bottom of the connecting plate.

[0011] Furthermore, a vibration-dropping assembly is provided on the mounting plate, the fixed plate and the vertical rod, and the vibration-dropping assembly includes a driving motor, a rotating shaft, a driving block and a connecting frame, the driving motor is fixedly mounted on the fixed plate, the rotating shaft is fixedly mounted on the output shaft of the driving motor, the driving block is fixedly mounted on the outer surface of the rotating shaft, the connecting frame is fixedly mounted on the front wall and the rear wall of the mounting plate, and the driving block is movably connected to the inner wall of the connecting frame.

[0012] Furthermore, both ends of the rotating shaft are rotatably connected to the fixed plate, the driving block is shaped like a comma, the connecting frame is shaped like a square, the connecting frame is slidably connected to the outer surface of the vertical rod, and a stop block corresponding to the connecting frame is fixedly installed at the bottom of the vertical rod.

[0013] Another technical problem to be solved by the present invention is to provide a forest soil carbon sink measurement and monitoring method, which specifically includes the following steps:

[0014] S1: Determine the sampling area, push the vehicle body, and move the sampling cylinder below to the top of the soil to be sampled;

[0015] S2: Digging the soil in the sampling area, the hydraulic cylinder extends, the sampling barrel and the excavation shovel are inserted into the soil, the servo motor is started, and under the meshing transmission of the inner ring and the multiple transmission gears, the multiple movable shafts and the excavation shovel rotate together, and the multiple excavation shovels rotate to the bottom of the sampling barrel;

[0016] S3: Collect the soil in the sampling area, start the servo motor, and under the meshing transmission of the driving gear and the outer gear ring, multiple excavation shovels rotate around the axis of the sampling tube to separate the soil in the excavation shovel and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylindrical shape;

[0017] S4: Move the sampled soil to the monitoring area, the hydraulic cylinder contracts, and multiple excavation shovels lift the soil sample in the sampling tube, push the vehicle body, and send the sampled soil to the monitoring area;

[0018] S5: Calculate the forest soil carbon sink C of the sample by formula h , where C h =C Δ *Q, C Δ =C t -C s , C t =ρ t *H t , t =M t / V t 、V t =π*(D t / 2)2*H t ;

[0019] S6: Analyze the forest soil carbon sink C h Calculation result: If C h >0, indicating that compared with the previous year, more carbon dioxide was effectively absorbed and fixed by forest soil, which has a positive impact on achieving the dual carbon goals; if C h = 0, indicating that the carbon storage in the forest soil has not changed compared with the previous year, and the forest soil has not fixed more carbon dioxide; if C h <0, indicating that compared with the previous year, the soil carbon storage has decreased and the amount of carbon dioxide absorbed and fixed in the forest soil has decreased.

[0020] Furthermore, the C Δ is the carbon storage of soil changes; Q is the conversion coefficient of carbon dioxide and carbon, Q = 44 / 12; C t is the soil carbon storage of the sample collected that year; C s is the soil carbon storage of the sample collected in the previous year; ρ t is the soil organic carbon density of the sample; H t M is the soil thickness of the sample; t V is the mass of soil organic carbon in the sample, measured by combustion oxidation-titration method; t is the soil volume of the sample; D t is the soil diameter of the sample, D t The diameter is equal to the inner wall diameter of the sampling tube.

[0021] Compared with the prior art, the present invention provides a forest soil carbon sink measurement and monitoring device and method thereof, which has the following beneficial effects:

[0022] 1. The forest soil carbon sink metering and monitoring device and method thereof are provided with an excavation sampling assembly. After the excavation sampling assembly is used, under the start-up of the servo motor and the meshing transmission of the inner gear ring and the transmission gear, multiple excavation shovels can be rotated together to the lower surface of the sampling tube, and under the start-up of the servo motor and the meshing transmission of the driving gear and the outer gear ring, the multiple excavation shovels are rotated together around the axis of the sampling tube, thereby separating the soil in the sampling tube from the soil in the sampling area. Under the support of the multiple excavation shovels, the cylindrical sampling soil in the sampling tube can be completely taken out, thereby ensuring the accuracy of the forest soil carbon sink metering and monitoring data.

[0023] 2. The forest soil carbon sink metering and monitoring device and method thereof are provided with a vibration and falling component. After the driving motor is started, the rotating shaft and the driving block rotate, and the driving block pushes the connecting frame to move upward and separates the driving block from the connecting frame, so that the connecting frame falls due to its own weight, thereby allowing the sampling tube and the excavation shovel to vibrate, and the sampling tube and the excavation shovel are flushed with water to ensure that the sampling tube and the excavation shovel are cleaned thoroughly, and the soil attached to the sampling tube and the excavation shovel is avoided as much as possible to affect the next forest soil carbon sink metering and monitoring.

[0024] 3. The forest soil carbon sink metering monitoring device and method thereof use the combustion oxidation-titration method to measure the soil organic carbon density of the sampled sample, check the scale to get the soil thickness of the sampled sample, check the sampling tube to get the soil diameter of the sampled sample, and add the conversion coefficient of carbon dioxide and carbon itself is determined, then the forest soil carbon sink C h The calculation formula is used to obtain the results. The measurement and monitoring of forest soil carbon sinks is relatively convenient. In fact, it only requires measuring the soil organic carbon density, which is efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front perspective schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a three-dimensional schematic diagram of the structure below the present invention;

[0027] Figure 3 It is a three-dimensional cross-sectional view of the structure of the present invention from above;

[0028] Figure 4 The structure of the present invention Figure 3 The enlarged schematic diagram of point A in the middle;

[0029] Figure 5 The present invention is a flow chart of the forest soil carbon sink measurement and monitoring method.

[0030] In the figure:

[0031] 1 vehicle body, 2 mounting plate, 3 turntable, 4 sampling tube, 5 mounting frame, 6 fixing frame;

[0032] 7 excavation sampling assembly, 71 movable shaft, 72 excavation shovel, 73 inner gear ring, 74 transmission gear, 75 servo motor, 76 outer gear ring, 77 servo motor, 78 driving gear;

[0033] 8 roller, 9 handle, 10 scale, 11 support block;

[0034] 12 lifting assembly, 121 hydraulic cylinder, 122 connecting plate;

[0035] 13 guide rod, 14 fixing plate, 15 vertical rod;

[0036] 16 vibration component, 161 drive motor, 162 rotating shaft, 163 drive block, 164 connection frame;

[0037] 17 stopper. Specific implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figure 1-4 , a forest soil carbon sink measurement and monitoring device, including a vehicle body 1 and a mounting plate 2. A roller 8 is installed at the bottom of the vehicle body 1 to facilitate the movement of the vehicle body 1. A handle 9 is fixedly installed on the side wall of the vehicle body 1 to facilitate the pushing of the vehicle body 1. A gripping sleeve is fixedly installed on the outer surface of the handle 9. A turntable 3 is rotatably connected in the mounting plate 2 and can rotate in the mounting plate 2, which is beneficial to completely separate the soil in the sampling cylinder 4 from the soil in the sampling area, so as to take out the sampled soil sample for monitoring. The inner wall of the turntable 3 is fixedly installed with a sampling cylinder 4 for excavating and collecting the soil in the sampling area. A mounting frame 5 is fixedly installed on the top of the mounting plate 2, and a fixing frame 6 is fixedly installed on the top of the turntable 3. The shapes of the mounting frame 5 and the fixing frame 6 are both U-shaped. A scale 10 is embedded in the inner wall of the sampling cylinder 4.

[0040] Among them, a lifting component 12 is arranged on the vehicle body 1. The lifting component 12 includes a hydraulic cylinder 121 and a connecting plate 122. The hydraulic cylinder 121 is fixedly installed on the top of the vehicle body 1. When the hydraulic cylinder 121 extends, the sampling cylinder 4 moves down and inserts into the soil in the sampling area for excavation and collection work. The connecting plate 122 is fixedly installed at the output end of the hydraulic cylinder 121. A guide rod 13 that is slidably connected to the top wall of the vehicle body 1 is fixedly installed on the top of the connecting plate 122 for guiding the connecting plate 122 to make the connecting plate 122 move vertically up and down as much as possible. A limit block is fixedly installed at the top of the guide rod 13. Fixing plates 14 are fixedly installed on both sides of the bottom of the connecting plate 122, and a vertical rod 15 is fixedly installed at the bottom of the connecting plate 122.

[0041] Please refer to Figure 1-3A vibration drop assembly 16 is provided on the mounting plate 2, the fixed plate 14 and the vertical rod 15. The vibration drop assembly 16 includes a driving motor 161, a rotating shaft 162, a driving block 163 and a connecting frame 164. The driving motor 161 is fixedly mounted on the fixed plate 14, and the rotating shaft 162 is fixedly mounted on the output shaft of the driving motor 161. When the driving motor 161 is started, the rotating shaft 162 rotates to gradually vibrate the soil. Both ends of the rotating shaft 162 are rotatably connected to the fixed plate 14 for supporting the rotating shaft 162. The driving block 163 is fixedly mounted on the outer surface of the rotating shaft 162 and can rotate with the rotating shaft 162. The shape of the driving block 163 is a comma.

[0042] In addition, the connecting frame 164 is fixedly mounted on the front wall and the rear wall of the mounting plate 2, and the driving block 163 is movably connected to the inner wall of the connecting frame 164. The rotation of the driving block 163 can push the connecting frame 164 to move upward. When a part of the comma-shaped driving block 163 rotates to be disengaged from the connecting frame 164, the connecting frame 164 together with the sampling tube 4 will fall due to its own weight, and then vibrate, thereby shaking off the soil attached to the inner wall of the sampling tube 4, which is beneficial for the inner wall of the sampling tube 4 to be clean during the next sampling, avoiding pollution between the soils and ensuring the accuracy of forest soil carbon sink measurement and monitoring. The connecting frame 164 is in the shape of a mouth, and the connecting frame 164 is slidably connected to the outer surface of the vertical rod 15. The connecting frame 164 can only move up and down along the outer surface of the vertical rod 15. The bottom of the vertical rod 15 is fixedly installed with a stopper 17 corresponding to the connecting frame 164, which prevents the connecting frame 164 from moving out of the outer surface of the vertical rod 15 and plays a limiting role.

[0043] When this embodiment is in use, the driving motor 161 is started, the rotating shaft 162 and the driving block 163 rotate, the driving block 163 gradually lifts up the connecting frame 164, and a part of the driving block 163 is separated from the connecting frame 164, so that the sampling tube 4 falls due to its own weight and collides with the driving block 163 when it contacts the driving block 163, so that the sampling tube 4 vibrates, thereby achieving the purpose of shaking off the soil on the inner wall of the sampling tube 4.

[0044] It should be noted that the sampling barrel 4 and the excavation shovel 72 are cleaned by flushing with water and cooperating with the start-up of the drive motor 161, so that the sampling barrel 4 and the excavation shovel 72 are vibrated and flushed at the same time, ensuring that the sampling barrel 4 and the excavation shovel 72 are cleaned thoroughly.

[0045] See also Figure 1-4The turntable 3, the mounting frame 5 and the fixed frame 6 are provided with an excavation sampling assembly 7 for sampling the soil with greater integrity to improve the accuracy of forest soil carbon sink measurement and monitoring. The excavation sampling assembly 7 includes a movable shaft 71, an excavation shovel 72, an inner ring gear 73, a transmission gear 74, a servo motor 75, an outer ring gear 76, a servo motor 77 and a driving gear 78. The movable shaft 71 is rotatably connected to the turntable 3. The outer surface of the sampling tube 4 is fixedly provided with a support block 11 rotatably connected to the movable shaft 71 for supporting the movable shaft 71. The excavation shovel 72 is fixedly installed at the bottom of the movable shaft 71 and can rotate with the movable shaft 71. The bottom of the excavation shovel 72 has an insert blade, and the insert blade is in the shape of a triangular pyramid, which reduces the contact area and is convenient for inserting into the soil for sampling.

[0046] In addition, the upper surface of the excavation shovel 72 is flush with the lower surface of the sampling tube 4, which is convenient for accurately checking the excavation depth. The inner gear ring 73 is rotatably connected to the top of the turntable 3, and the transmission gear 74 is fixedly installed on the outer surface of the movable shaft 71, and can rotate with the movable shaft 71. The inner gear ring 73 is meshed with the transmission gear 74. Driven by the inner gear ring 73, multiple transmission gears 74 rotate together in the same direction, so that the excavation shovel 72 rotates to the bottom of the sampling tube 4, and then the soil at the bottom of the sampling tube 4 is dragged, which is conducive to the more complete sampling of the soil. The servo motor 75 is fixedly installed on the top of the fixed frame 6, and the output shaft of the servo motor 75 is fixedly installed on the movable shaft 71. After the servo motor 75 is started, the excavation shovel 72 is gradually rotated to the lower surface of the sampling tube 4 for excavation and collection.

[0047] At the same time, the outer gear ring 76 is fixedly mounted on the outer surface of the turntable 3 and can rotate with the turntable 3. The outer gear ring 76 is located on the outer side of the inner gear ring 73. The servo motor 77 is fixedly mounted on the top of the mounting frame 5. The driving gear 78 is fixedly mounted on the output shaft of the servo motor 77. The outer gear ring 76 is meshed with the driving gear 78. The driving gear 78 can drive the outer gear ring 76 to mesh and rotate, so that the multiple excavation shovels 72 rotate around the axis of the sampling tube 4, and then separate the soil in the sampling tube 4 from the soil in the sampling area, so that the multiple excavation shovels 72 lift the soil in the sampling tube 4 for collection. This method ensures that the sampled soil is a relatively complete cylindrical shape, which is convenient for measuring the forest soil carbon sink C h According to calculation, the driving gear 78 is located on the inner side of the mounting frame 5.

[0048] When this embodiment is in use, the servo motor 75 is started, and the multiple movable shafts 71 and the excavation shovel 72 rotate together under the meshing transmission of the inner ring gear 73 and the transmission gear 74. The excavation shovel 72 rotates to the bottom of the sampling cylinder 4, and the servo motor 77 is started. Under the meshing transmission of the outer ring gear 76 and the driving gear 78, the multiple excavation shovels 72 rotate around the axis of the sampling cylinder 4, and the soil in the sampling cylinder 4 is completely separated from the soil in the sampling area. As the sampling cylinder 4 is lifted, the excavated and sampled soil is taken out, completing the excavation and collection of the soil.

[0049] The present invention provides a forest soil carbon sink measurement and monitoring method, which specifically comprises the following steps:

[0050] S1: Determine the sampling area, push the vehicle body 1, and move the sampling cylinder 4 below to the top of the soil to be sampled;

[0051] S2: Digging the soil in the sampling area, the hydraulic cylinder 121 extends, the sampling barrel 4 and the excavation shovel 72 are inserted into the soil, the servo motor 75 is started, and under the meshing transmission of the inner ring gear 73 and the plurality of transmission gears 74, the plurality of movable shafts 71 and the excavation shovel 72 rotate together, and the plurality of excavation shovels 72 rotate to the right below the sampling barrel 4;

[0052] S3: Collect the soil in the sampling area, start the servo motor 77, and under the meshing transmission of the driving gear 78 and the outer gear ring 76, the multiple excavation shovels 72 rotate around the axis of the sampling tube 4 to separate the soil in the excavation shovel 72 and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylindrical shape;

[0053] S4: Move the sampled soil to the monitoring area, the hydraulic cylinder 121 contracts, and the multiple excavation shovels 72 lift the soil sample in the sampling tube 4, push the vehicle body 1, and send the sampled soil to the monitoring area;

[0054] S5: Calculate the forest soil carbon sink C of the sample by formula h , where C h =C Δ *Q, C Δ =C t -C s , C t =ρ t *H t , t =M t / V t 、V t =π*(D t / 2) 2 *H t , C Δis the carbon storage of soil changes; Q is the conversion coefficient of carbon dioxide and carbon, Q = 44 / 12; C t is the soil carbon storage of the sample collected that year; C s is the soil carbon storage of the sample collected in the previous year; ρ t is the soil organic carbon density of the sample; H t is the soil thickness of the sample, H t It can be seen from the value on the scale 10 that is flush with the sampled soil; M t V is the mass of soil organic carbon in the sample, which is measured by combustion oxidation-titration method, and is suitable for the determination of organic carbon in soil. The combustion oxidation-titration method is an existing technology and will not be described in detail in this article; t is the soil volume of the sample; D t is the soil diameter of the sample, D t The diameter is equal to the inner wall diameter of the sampling tube 4;

[0055] S6: Analyze the forest soil carbon sink C h Calculation result: If C h >0, indicating that compared with the previous year, more carbon dioxide was effectively absorbed and fixed by forest soil, which has a positive impact on achieving the dual carbon goals; if C h =0, indicating that the carbon storage in the forest soil has not changed compared with the previous year, and the forest soil has not fixed more carbon dioxide. This year and in the future, it is necessary to promote clean energy such as wind energy, solar energy, and hydropower to gradually replace traditional fossil energy and reduce carbon dioxide emissions from the source; if C h <0, indicating that compared with the previous year, the carbon storage in the soil has decreased and the absorption and fixation of carbon dioxide in the forest soil has decreased. Carbon storage can be increased by afforestation, restoration of degraded forests and wetlands, and carbon dioxide emissions can be reduced by promoting renewable energy and improving energy efficiency.

[0056] The beneficial effects of the above embodiments are:

[0057] The forest soil carbon sink metering and monitoring device and method thereof are provided with an excavation sampling assembly 7. After the excavation sampling assembly 7 is used, under the start-up of the servo motor 75 and the meshing transmission of the inner gear ring 73 and the transmission gear 74, multiple excavation shovels 72 can be rotated together to the lower surface of the sampling tube 4, and under the start-up of the servo motor 77 and the meshing transmission of the driving gear 78 and the outer gear ring 76, multiple excavation shovels 72 are rotated together around the axis of the sampling tube 4, thereby separating the soil in the sampling tube 4 from the soil in the sampling area. Under the support of the multiple excavation shovels 72, the cylindrical sampling soil in the sampling tube 4 can be completely taken out, thereby ensuring the accuracy of the forest soil carbon sink metering and monitoring data.

[0058] In addition, by setting up the vibration-dropping component 16, after the driving motor 161 is started, the rotating shaft 162 and the driving block 163 rotate, and the driving block 163 pushes the connecting frame 164 to move upward and separates the driving block 163 from the connecting frame 164, so that the connecting frame 164 falls down due to its own weight, thereby allowing the sampling cylinder 4 and the excavation shovel 72 to vibrate, and the sampling cylinder 4 and the excavation shovel 72 are flushed with water, thereby ensuring that the sampling cylinder 4 and the excavation shovel 72 are thoroughly cleaned, and the soil attached to the sampling cylinder 4 and the excavation shovel 72 is avoided as much as possible to affect the next forest soil carbon sink measurement and monitoring.

[0059] At the same time, the soil organic carbon density of the sample is measured by the combustion oxidation-titration method, the soil thickness of the sample is obtained by checking the scale 10, and the soil diameter of the sample is obtained by checking the sampling tube 4. The conversion coefficient of carbon dioxide and carbon is determined, and the forest soil carbon sink C h The calculation formula is used to obtain the results. The measurement and monitoring of forest soil carbon sinks is relatively convenient. In fact, it only requires measuring the soil organic carbon density, which is efficient and convenient.

[0060] The servo motor 75, servo motor 77, hydraulic cylinder 121 and drive motor 161 mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the text.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] Although embodiments of the present invention have been described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A forest soil carbon sink metering and monitoring device, comprising a body (1) and a mounting plate (2), wherein a turntable (3) is rotatably connected to the mounting plate (2), a sampling cylinder (4) is fixedly mounted on the inner wall of the turntable (3), a mounting frame (5) is fixedly mounted on the top of the mounting plate (2), and a fixing frame (6) is fixedly mounted on the top of the turntable (3), characterized in that: An excavation sampling assembly (7) for improving the accuracy of forest soil measurement and monitoring by sampling the soil more integrally is provided on the turntable (3), the mounting frame (5) and the fixing frame (6).

2. A forest soil carbon sink measurement and monitoring device according to claim 1, characterized in that: The excavation sampling assembly (7) includes a movable shaft (71), an excavation shovel (72), an internal gear ring (73), a transmission gear (74), a servo motor (75), an external gear ring (76), a servo motor (77) and a driving gear (78). The movable shaft (71) is rotatably connected in the turntable (3), the excavation shovel (72) is fixedly installed at the bottom of the movable shaft (71), the internal gear ring (73) is rotatably connected to the top of the turntable (3), the transmission gear (74) is fixedly installed on the outer surface of the movable shaft (71), the internal gear ring (73) is internally meshed with the transmission gear (74), the servo motor (75) is fixedly installed on the top of the fixing frame (6), the output shaft of the servo motor (75) is fixedly installed with the movable shaft (71), the external gear ring (76) is fixedly installed on the outer surface of the turntable (3), the servo motor (77) is fixedly installed on the top of the mounting frame (5), the driving gear (78) is fixedly installed on the output shaft of the servo motor (77), and the external gear ring (76) is externally meshed with the driving gear (78).

3. A forest soil carbon sink measurement and monitoring device according to claim 2, characterized in that: The shapes of the mounting frame (5) and the fixing frame (6) are both in the shape of a C. The bottom of the excavation shovel (72) has an insertion edge, and the shape of the insertion edge is a triangular pyramid. The upper surface of the excavation shovel (72) is flush with the lower surface of the sampling cylinder (4). The external gear ring (76) is located outside the internal gear ring (73), and the driving gear (78) is located inside the mounting frame (5).

4. A forest soil carbon sink measurement and monitoring device according to claim 1, characterized in that: Rollers (8) are installed at the bottom of the vehicle body (1), a handle (9) is fixedly installed on the side wall of the vehicle body (1), a gripping sleeve is fixedly installed on the outer surface of the handle (9), and a scale (10) is embedded in the inner wall of the sampling cylinder (4).

5. A forest soil carbon sink measurement and monitoring device according to claim 2, characterized in that: A support block (11) rotatably connected to the movable shaft (71) is fixedly installed on the outer surface of the sampling cylinder (4). A lifting assembly (12) is provided on the vehicle body (1). The lifting assembly (12) includes a hydraulic cylinder (121) and a connecting plate (122). The hydraulic cylinder (121) is fixedly installed on the top of the vehicle body (1), and the connecting plate (122) is fixedly installed at the output end of the hydraulic cylinder (121).

6. A forest soil carbon sink measurement and monitoring device according to claim 5, characterized in that: A guide rod (13) slidably connected to the top wall of the vehicle body (1) is fixedly installed on the top of the connecting plate (122). A limit block is fixedly installed on the top of the guide rod (13). Fixed plates (14) are fixedly installed on both sides of the bottom of the connecting plate (122), and a vertical rod (15) is fixedly installed at the bottom of the connecting plate (122).

7. A forest soil carbon sink measurement and monitoring device according to claim 6, characterized in that: A vibration-drop assembly (16) is arranged on the mounting plate (2), the fixed plate (14) and the vertical rod (15). The vibration-drop assembly (16) comprises a driving motor (161), a rotating shaft (162), a driving block (163) and a connecting frame (164). The driving motor (161) is fixedly mounted on the fixed plate (14), the rotating shaft (162) is fixedly mounted on the output shaft of the driving motor (161), the driving block (163) is fixedly mounted on the outer surface of the rotating shaft (162), the connecting frame (164) is fixedly mounted on the front wall and the rear wall of the mounting plate (2), and the driving block (163) is movably connected to the inner wall of the connecting frame (164).

8. A forest soil carbon sink measurement and monitoring device according to claim 7, characterized in that: The two ends of the rotating shaft (162) are rotatably connected to the fixed plate (14); the driving block (163) is in the shape of a comma; the connecting frame (164) is in the shape of a square; the connecting frame (164) is slidably connected to the outer surface of the vertical rod (15); and a stopper (17) corresponding to the connecting frame (164) is fixedly installed at the bottom of the vertical rod (15).

9. A forest soil carbon sink measurement and monitoring method, characterized in that: The forest soil carbon sink measurement and monitoring device according to claim 8 specifically comprises the following steps: S1: Determine the sampling area, push the vehicle body (1), and move the sampling cylinder (4) below to the top of the soil to be sampled; S2: The soil in the sampling area is excavated, the hydraulic cylinder (121) is extended, the sampling tube (4) and the excavation shovel (72) are inserted into the soil, the servo motor (75) is started, and under the meshing transmission of the inner ring gear (73) and the plurality of transmission gears (74), the plurality of movable shafts (71) and the excavation shovel (72) rotate together, and the plurality of excavation shovels (72) rotate to the position directly below the sampling tube (4); S3: Collect the soil in the sampling area, start the servo motor (77), and under the meshing transmission of the driving gear (78) and the outer gear ring (76), the multiple excavation shovels (72) rotate around the axis of the sampling tube (4) to separate the soil in the excavation shovels (72) and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylindrical shape; S4: The sampled soil is moved to the monitoring area, the hydraulic cylinder (121) is retracted, and a plurality of excavation shovels (72) lift the soil sample in the sampling tube (4), push the vehicle body (1), and deliver the sampled soil to the monitoring area; S5: Calculate the forest soil carbon sink C of the sample by formula h , where C h =C Δ *Q, C Δ =C t -C s , C t =ρ t *H t , t =M t / V t 、V t =π*(D t / 2) 2 *H t ; S6: Analyze the forest soil carbon sink C h Calculation result: If C h >0, indicating that compared with the previous year, more carbon dioxide was effectively absorbed and fixed by forest soil, which has a positive impact on achieving the dual carbon goals; if C h = 0, indicating that the carbon storage in the forest soil has not changed compared with the previous year, and the forest soil has not fixed more carbon dioxide; if C h <0, indicating that compared with the previous year, the soil carbon storage has decreased and the amount of carbon dioxide absorbed and fixed in the forest soil has decreased.

10. A forest soil carbon sink measurement and monitoring method according to claim 9, characterized in that: The C Δ is the carbon storage of soil changes; Q is the conversion coefficient of carbon dioxide and carbon, Q = 44 / 12; C t is the soil carbon storage of the sample collected that year; C s is the soil carbon storage of the sample collected in the previous year; ρ t is the soil organic carbon density of the sample; H t is the soil thickness of the sample; M t V is the mass of soil organic carbon in the sample, measured by combustion oxidation-titration method; t is the soil volume of the sample; D t is the soil diameter of the sample, D t The diameter is equal to the inner wall diameter of the sampling tube (4).

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