Forest soil carbon sink measurement monitoring device and method thereof

Abstract

The application relates to the technical field of carbon sink measurement and monitoring, and discloses a forest soil carbon sink measurement and monitoring device, which comprises a vehicle body and a mounting plate, a rotating disc is rotationally connected in the mounting plate, a sampling cylinder is fixedly installed on the inner wall of the rotating disc, and a mounting frame is fixedly installed on the top of the mounting plate. The forest soil carbon sink measurement and monitoring device and method, by arranging the excavation sampling assembly, after the excavation sampling assembly is used, under the starting of the servo motor and the meshing transmission of the inner gear ring and the transmission gear, multiple excavation shovels can be rotated to the lower surface of the sampling cylinder, under the starting of the servo motor and the meshing transmission of the driving gear and the outer gear ring, the multiple excavation shovels are rotated around the shaft of the sampling cylinder, the soil in the sampling cylinder is separated from the soil in the sampling area, and under the lifting of the multiple excavation shovels, the cylindrical sampling soil in the sampling cylinder can be completely taken out, so that the accuracy of the forest soil carbon sink measurement and monitoring data is ensured.

Description

Technical Field

[0001] This invention relates to the field of carbon sequestration measurement and monitoring technology, specifically to a forest soil carbon sequestration measurement and monitoring device and method. Background Technology

[0002] Carbon sequestration refers to the process of quantitatively assessing the amount of carbon stored and absorbed in an ecosystem through scientific methods and technologies. Natural ecosystems such as forests, grasslands, and wetlands absorb carbon dioxide from the atmosphere through photosynthesis and have significant carbon sequestration functions. Carbon sequestration is of great significance for achieving the "dual carbon" goal. It can help assess the carbon sequestration capacity of different ecosystems and provide a scientific basis for formulating effective emission reduction measures.

[0003] A search revealed Chinese patent CN117147210A, which discloses a land use carbon sequestration assessment and collection system based on multi-source spatial data. By filling the storage cylinder and the telescopic water bladder with water, a multi-stage cylinder is activated. The piston rod of the multi-stage cylinder drives the first connecting rod downwards, which in turn drives the motor cover downwards. The motor cover then drives the second connecting rod downwards, which in turn drives the drill bit downwards. The bottom end of the drill bit passes through the borehole and inserts into the trolley. During the downward movement, the slot on the drill bit is adjusted so that it engages with the fixing frame. Simultaneously, the bottom end of the drill bit covers the telescopic water bladder, and the inner wall of the drill bit presses against the spiral cap on the telescopic water bladder. The pressure on the telescopic water bladder causes it to retract, releasing the water inside. The water is sprayed from multiple nozzles and adheres to the inner wall of the drill bit, reducing the shear and compressive strength of the soil and thus decreasing the resistance during drilling. This allows for faster and more efficient collection of soil samples from different spatial environments, especially suitable for hard soils, greatly improving sampling efficiency. It is clear that this patent achieves improved sampling efficiency by softening the soil. However, the soil morphology collected using this method changes, and the sampled soil cannot be completely removed, leading to significant errors in the calculated carbon sequestration and low accuracy in carbon sequestration monitoring. To ensure more complete removal of the collected soil samples, a forest soil carbon sequestration monitoring device and method are proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a forest soil carbon sequestration metering and monitoring device and method, which has the advantage of facilitating the relatively complete extraction of sampled soil samples.

[0005] To achieve the aforementioned goal of facilitating the extraction of relatively intact soil samples, the present invention provides the following technical solution: a forest soil carbon sequestration metering and monitoring device, comprising a vehicle body and a mounting plate, a turntable rotatably connected to the mounting plate, a sampling cylinder fixedly installed on the inner wall of the turntable, a mounting frame fixedly installed on the top of the mounting plate, and a fixing frame fixedly installed on the top of the turntable. The turntable, mounting frame, and fixing frame are equipped with excavation sampling components to improve the accuracy of forest soil metering and monitoring by sampling soil samples with relatively intact samples.

[0006] Furthermore, 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 drive gear. The movable shaft is rotatably connected to 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, and the internal gear ring meshes internally with the transmission gear. The servo motor is fixedly installed on the top of the mounting frame, and the output shaft of the servo motor is fixedly installed to 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, and the drive gear is fixedly installed on the output shaft of the servo motor, with the external gear ring meshing externally with the drive gear.

[0007] Furthermore, both the mounting frame and the fixing frame are U-shaped, the bottom of the excavating shovel has a cutting edge, the cutting edge is a triangular pyramid, the upper surface of the excavating shovel is flush with the lower surface of the sampling tube, the outer gear ring is located outside the inner gear ring, and the drive gear is located inside the mounting frame.

[0008] Furthermore, the bottom of the vehicle body is equipped with rollers, the side wall of the vehicle body is fixedly equipped with a handle, the outer surface of the handle is fixedly equipped with a grip sleeve, and the inner wall of the sampling tube is embedded with a scale.

[0009] Furthermore, a support block that is rotatably connected to the movable shaft is fixedly installed on the outer surface of the sampling tube, 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 on the output end of the hydraulic cylinder.

[0010] Furthermore, a guide rod that is 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, and a vertical rod is fixedly installed on the bottom of the connecting plate.

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

[0012] Furthermore, the two ends of the rotating shaft are rotatably connected to the fixed plate, the driving block is comma-shaped, the connecting frame is U-shaped, 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 method for measuring and monitoring carbon sequestration in forest soil, specifically including the following steps:

[0014] S1: Determine the sampling area, push the vehicle to move the sampling tube below to the soil area to be sampled;

[0015] S2: The soil in the sampling area is excavated, the hydraulic cylinder extends, the sampling tube and the excavation shovel are inserted into the soil, the servo motor starts, and under the meshing transmission of the internal gear ring and multiple transmission gears, multiple movable shafts and the excavation shovel rotate together, and multiple excavation shovels rotate to directly below the sampling tube.

[0016] S3: Collect soil from the sampling area, start the servo motor, and under the meshing transmission of the drive gear and the external gear ring, multiple excavation shovels rotate around the axis of the sampling cylinder to divide the soil in the excavation shovels and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylinder.

[0017] S4: Move the sampled soil to the monitoring area. The hydraulic cylinder retracts, and multiple excavation shovels lift the soil sample in the sampling tube, pushing the vehicle to deliver the sampled soil to the monitoring area.

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

[0019] S6: Analyze the carbon sequestration C of the sampled forest soil. h Calculation result, if C h A value greater than 0 indicates that more carbon dioxide was effectively absorbed and fixed by forest soils compared to the previous year, which has a positive impact on achieving the dual carbon targets; if C h =0, indicating that the carbon storage in the forest soil has not changed compared to the previous year, and the forest soil has not fixed more carbon dioxide; if C h A value of <0 indicates that the carbon storage in the soil has decreased compared to the previous year, and the amount of carbon dioxide absorbed and fixed in the forest soil has decreased.

[0020] Furthermore, the C Δ The carbon storage in the soil is a variable; Q is the conversion coefficient between carbon dioxide and carbon, Q = 44 / 12; C t C represents the soil carbon storage of the sampled soil in that year. s ρ represents the soil carbon storage of the sample taken in the previous year. t The soil organic carbon density of the sampled soil; H t M represents the soil thickness of the sampled soil. t The mass of soil organic carbon in the sample was determined using a combustion oxidation-titration method; V t D represents the soil volume of the sampled soil. t D represents the diameter of the soil sample. t The diameter is equal to the inner diameter of the sampling tube.

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

[0022] 1. The forest soil carbon sequestration measurement and monitoring device and method, by setting up an excavation sampling component, after the excavation sampling component is used, under the starting of the servo motor and the meshing transmission of the internal gear ring and the transmission gear, multiple excavation shovels can rotate together to the lower surface of the sampling cylinder. With the starting of the servo motor and the meshing transmission of the drive gear and the external gear ring, multiple excavation shovels rotate together around the axis of the sampling cylinder, thereby separating the soil in the sampling cylinder from the soil in the sampling area. With the support of multiple excavation shovels, the cylindrical sample soil in the sampling cylinder can be completely removed, ensuring the accuracy of the forest soil carbon sequestration measurement and monitoring data.

[0023] 2. The forest soil carbon sequestration measurement and monitoring device and method, by setting up a shaking component, after the drive motor is started, the rotating shaft and drive block rotate. The drive block pushes the connecting frame upward and then disengages from the connecting frame, causing the connecting frame to fall due to its own weight. This allows the sampling tube and the excavation shovel to vibrate. Combined with the water washing of the sampling tube and the excavation shovel, this ensures that the sampling tube and the excavation shovel are thoroughly cleaned, minimizing the impact of soil adhering to the sampling tube and the excavation shovel on the next forest soil carbon sequestration measurement and monitoring.

[0024] 3. This forest soil carbon sequestration measurement and monitoring device and method uses a combustion oxidation-titration method to measure the soil organic carbon density of the sampled soil, calculates the soil thickness of the sampled soil by referring to a scale, and calculates the soil diameter of the sampled soil by referring to the sampling tube. Since the conversion coefficient between carbon dioxide and carbon is fixed, the forest soil carbon sequestration C can then be calculated. h The calculation formula yields results, making forest soil carbon sequestration measurement and monitoring relatively convenient. In practice, only the soil organic carbon density needs to be measured, which is efficient and convenient. Attached Figure Description

[0025] Figure 1 This is a front perspective view of the structure of the present invention;

[0026] Figure 2 This is a three-dimensional schematic diagram of the structure of the present invention.

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

[0028] Figure 4 The structure of this invention Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a flowchart of the forest soil carbon sequestration measurement and monitoring method of the present invention.

[0030] In the picture:

[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 Internal gear ring, 74 Transmission gear, 75 Servo motor, 76 External gear ring, 77 Servo motor, 78 Drive gear;

[0033] 8 rollers, 9 handles, 10 scale, 11 support blocks;

[0034] 12 Lifting assembly, 121 Hydraulic cylinder, 122 Connecting plate;

[0035] 13 Guide rod, 14 Fixing plate, 15 Vertical rod;

[0036] 16. Vibration assembly, 161. Drive motor, 162. Rotary shaft, 163. Drive block, 164. Connecting frame;

[0037] 17 blocks. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-4 A forest soil carbon sequestration measurement and monitoring device includes a vehicle body 1 and a mounting plate 2. The bottom of the vehicle body 1 is equipped with rollers 8 for easy movement of the vehicle body 1. A handle 9 is fixedly installed on the side wall of the vehicle body 1 for easy pushing of the vehicle body 1. A grip 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 on its own within the mounting plate 2 to facilitate complete separation of the soil in the sampling tube 4 from the soil in the sampling area, thereby allowing the sampled soil to be taken out for monitoring. The sampling tube 4 is fixedly installed on the inner wall of the turntable 3 for digging and collecting 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. Both the mounting frame 5 and the fixing frame 6 are U-shaped. A scale 10 is embedded in the inner wall of the sampling tube 4.

[0040] The vehicle body 1 is equipped with a lifting assembly 12, which 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 tube 4 moves down and inserts into the soil of the sampling area for excavation and collection. The connecting plate 122 is fixedly installed on 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 to guide the connecting plate 122 and allow the connecting plate 122 to move vertically up and down as much as possible. A limit block is fixedly installed on 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 on the bottom of the connecting plate 122.

[0041] Please see Figure 1-3The mounting plate 2, the fixing plate 14, and the vertical rod 15 are equipped with a shaking assembly 16. The shaking assembly 16 includes a drive motor 161, a rotating shaft 162, a drive block 163, and a connecting frame 164. The drive motor 161 is fixedly mounted on the fixing plate 14, and the rotating shaft 162 is fixedly mounted on the output shaft of the drive motor 161. When the drive motor 161 is started, the rotating shaft 162 rotates, gradually shaking the soil. The two ends of the rotating shaft 162 are rotatably connected to the fixing plate 14 to support the rotating shaft 162. The drive 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 drive block 163 is comma-shaped.

[0042] Furthermore, the connecting frame 164 is fixedly installed on the front and rear walls of the mounting plate 2. 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 disengage from the connecting frame 164, the connecting frame 164 and the sampling tube 4 will fall due to their own weight, which will cause vibration, thereby shaking off the soil attached to the inner wall of the sampling tube 4. This ensures that the inner wall of the sampling tube 4 is clean during the next sampling, avoids soil contamination, and ensures the accuracy of forest soil carbon sequestration measurement and monitoring. The connecting frame 164 is U-shaped and 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. A stop block 17 corresponding to the connecting frame 164 is fixedly installed at the bottom of the vertical rod 15 to prevent the connecting frame 164 from moving out of the outer surface of the vertical rod 15, thus playing a limiting role.

[0043] In this embodiment, when the drive motor 161 is started, the shaft 162 and the drive block 163 rotate. The drive block 163 gradually lifts the connecting frame 164, and then a part of the drive block 163 is separated from the connecting frame 164, so that the sampling tube 4 falls due to its own weight. When it comes into contact with the drive block 163, it collides with it, thereby causing the sampling tube 4 to vibrate, thus achieving the purpose of shaking the soil off the inner wall of the sampling tube 4.

[0044] It should be noted that the sampling tube 4 and the excavation shovel 72 are cleaned by rinsing with water and starting the drive motor 161, so that the sampling tube 4 and the excavation shovel 72 vibrate and are rinsed at the same time, ensuring that the sampling tube 4 and the excavation shovel 72 are thoroughly cleaned.

[0045] Please see Figure 1-4The turntable 3, mounting frame 5, and fixing frame 6 are equipped with an excavation sampling component 7, which improves the accuracy of forest soil carbon sequestration measurement and monitoring by sampling soil with relatively complete integrity. The excavation sampling component 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 drive gear 78. The movable shaft 71 is rotatably connected in the turntable 3. A support block 11, which is rotatably connected to the movable shaft 71, is fixedly installed on the outer surface of the sampling cylinder 4 to support 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 a cutting edge, which is shaped like a triangular pyramid to reduce the contact area and facilitate insertion into the soil for sampling.

[0046] Furthermore, the upper surface of the excavation shovel 72 is flush with the lower surface of the sampling cylinder 4, facilitating accurate viewing of the excavation depth. The internal 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, allowing it to rotate with the movable shaft 71. The internal gear ring 73 meshes with the transmission gear 74, and under the drive of the internal gear ring 73, multiple transmission gears 74 rotate together in the same direction, causing the excavation shovel 72 to rotate directly below the sampling cylinder 4, thereby holding the soil at the bottom of the sampling cylinder 4, which facilitates the removal of soil samples that are more complete. 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 with the movable shaft 71. After the servo motor 75 is started, it gradually rotates the excavation shovel 72 to the lower surface of the sampling cylinder 4 for excavation and collection.

[0047] Meanwhile, the outer gear ring 76 is fixedly installed on the outer surface of the turntable 3 and can rotate with the turntable 3. The outer gear ring 76 is located outside the inner gear ring 73. The servo motor 77 is fixedly installed on the top of the mounting bracket 5, and the drive gear 78 is fixedly installed on the output shaft of the servo motor 77. The outer gear ring 76 meshes with the drive gear 78, and the drive gear 78 can drive the outer gear ring 76 to rotate, causing multiple excavating shovels 72 to rotate around the axis of the sampling cylinder 4. This separates the soil inside the sampling cylinder 4 from the soil in the sampling area, allowing the multiple excavating shovels 72 to lift and collect the soil inside the sampling cylinder 4. This method ensures that the sampled soil is a relatively complete cylinder, which facilitates the analysis of forest soil carbon sequestration C. h According to the calculation, the drive gear 78 is located inside the mounting bracket 5.

[0048] In this embodiment, when in use, the servo motor 75 is started. Under the meshing transmission of the internal gear ring 73 and the transmission gear 74, multiple movable shafts 71 and the excavation shovel 72 rotate together. The excavation shovel 72 rotates to the position directly below the sampling cylinder 4. The servo motor 77 is started. Under the meshing transmission of the external gear ring 76 and the drive gear 78, multiple excavation shovels 72 rotate around the axis of the sampling cylinder 4, completely separating the soil inside the sampling cylinder 4 from the soil in the sampling area. As the sampling cylinder 4 is lifted, the excavated and sampled soil is taken out, completing the soil excavation and collection.

[0049] This invention provides a method for measuring and monitoring carbon sequestration in forest soil, specifically including the following steps:

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

[0051] S2: The soil in the sampling area is excavated. The hydraulic cylinder 121 extends, and the sampling cylinder 4, together with the excavation shovel 72, is inserted into the soil. The servo motor 75 is started. Under the meshing transmission of the internal gear ring 73 and multiple transmission gears 74, multiple movable shafts 71 and the excavation shovel 72 rotate together, and the multiple excavation shovels 72 rotate to directly below the sampling cylinder 4.

[0052] S3: Collect soil from the sampling area, start the servo motor 77, and under the meshing transmission of the drive gear 78 and the external gear ring 76, multiple excavation shovels 72 rotate around the axis of the sampling cylinder 4 to divide the soil in the excavation shovels 72 and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylinder.

[0053] S4: Move the sampled soil to the monitoring area. The hydraulic cylinder 121 retracts, and multiple 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.

[0054] S5: Calculate the carbon sink C of the sampled forest soil using the formula. h C h =C Δ *Q、C Δ =C t -C s C t =ρ t *H t ρ t =M t / V t V t =π*(D t / 2) 2 *H t C ΔThe carbon storage in the soil is a variable; Q is the conversion coefficient between carbon dioxide and carbon, Q = 44 / 12; C t C represents the soil carbon storage of the sampled soil in that year. s ρ represents the soil carbon storage of the sample taken in the previous year. t The soil organic carbon density of the sampled soil; H t H represents the soil thickness of the sampled soil. t The value can be seen from the reading on ruler 10, which is flush with the sampled soil; M t The mass of soil organic carbon in the sample was determined using the combustion oxidation-titration method, which is suitable for the determination of organic carbon in soil. The combustion oxidation-titration method is an existing technique and will not be elaborated upon further in this text. t D represents the soil volume of the sampled soil. t D represents the diameter of the soil sample. t The diameter is equal to the inner wall diameter of sampling cylinder 4;

[0055] S6: Analyze the carbon sequestration C of the sampled forest soil. h Calculation result, if C h A value greater than 0 indicates that more carbon dioxide was effectively absorbed and fixed by forest soils compared to the previous year, which has a positive impact on achieving the dual carbon targets; if C h =0 indicates that the carbon storage in the forest soil has not changed compared to 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 sources such as wind, solar, and hydropower to gradually replace traditional fossil fuels and reduce carbon dioxide emissions at the source. If C h A value of <0 indicates that the carbon storage in the soil has decreased compared to the previous year, and the amount of carbon dioxide absorbed and fixed in forest soils has decreased. Carbon storage can be increased through 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 as follows:

[0057] The forest soil carbon sequestration measurement and monitoring device and method, by setting up an excavation sampling component 7, after the excavation sampling component 7 is used, under the starting of the servo motor 75 and the meshing transmission of the internal gear ring 73 and the transmission gear 74, multiple excavation shovels 72 can rotate together to the lower surface of the sampling cylinder 4. With the starting of the servo motor 77 and the meshing transmission of the drive gear 78 and the external gear ring 76, the multiple excavation shovels 72 rotate together around the axis of the sampling cylinder 4, thereby separating the soil in the sampling cylinder 4 from the soil in the sampling area. With the support of the multiple excavation shovels 72, the cylindrical sample soil in the sampling cylinder 4 can be completely removed, ensuring the accuracy of the forest soil carbon sequestration measurement and monitoring data.

[0058] Furthermore, by setting up the shaking component 16, after the drive motor 161 is started, the rotating shaft 162 and the drive block 163 rotate. The drive block 163 pushes the connecting frame 164 upward and then disengages from the connecting frame 164, causing the connecting frame 164 to fall due to its own weight. This allows the sampling tube 4 and the excavation shovel 72 to vibrate. Combined with the water washing of the sampling tube 4 and the excavation shovel 72, this ensures that the sampling tube 4 and the excavation shovel 72 are thoroughly cleaned, minimizing the impact of soil adhering to the sampling tube 4 and the excavation shovel 72 on the next forest soil carbon sequestration measurement and monitoring.

[0059] Simultaneously, the soil organic carbon density of the sampled samples was measured using the combustion oxidation-titration method. The soil thickness of the sampled samples was determined by referring to scale 10, and the soil diameter of the sampled samples was determined by referring to sampling cylinder 4. Since the conversion coefficient between carbon dioxide and carbon is inherently fixed, the forest soil carbon sink C can then be used. h The calculation formula yields results, making forest soil carbon sequestration measurement and monitoring relatively convenient. In practice, only the soil organic carbon density needs to be measured, 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 power supply. The main controller can be a conventional known device such as a computer that performs control, and the existing publicly available power connection technology will not be described in detail in the text.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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

Claims

1. A forest soil carbon sequestration metering and monitoring device, comprising a vehicle body (1) and a mounting plate (2), wherein a turntable (3) is rotatably connected to the mounting plate (2), a sampling tube (4) is fixedly installed on the inner wall of the turntable (3), 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), characterized in that: The turntable (3), mounting frame (5) and fixing frame (6) are equipped with an excavation sampling component (7) to improve the accuracy of forest soil measurement and monitoring by sampling soil with relatively complete integrity. 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 drive 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). On the surface, the internal gear ring (73) meshes internally with the transmission gear (74), the servo motor (75) is fixedly mounted on the top of the fixed frame (6), the output shaft of the servo motor (75) is fixedly mounted with the movable shaft (71), the external gear ring (76) is fixedly mounted on the outer surface of the turntable (3), the servo motor (77) is fixedly mounted on the top of the mounting frame (5), the drive gear (78) is fixedly mounted on the output shaft of the servo motor (77), and the external gear ring (76) meshes externally with the drive gear (78); The outer surface of the sampling tube (4) is fixedly installed with a support block (11) that is rotatably connected to the movable shaft (71). The vehicle body (1) is provided with a lifting assembly (12). 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 on the output end of the hydraulic cylinder (121). The top of the connecting plate (122) is fixedly installed with a guide rod (13) that is slidably connected to the top wall of the vehicle body (1). The top of the guide rod (13) is fixedly installed with a limit block. The bottom sides of the connecting plate (122) are fixedly installed with fixing plates (14). The bottom of the connecting plate (122) is fixedly installed with a vertical rod (15). The mounting plate (2), the fixing plate (14) and the vertical rod (15) are provided with a shaking assembly (16). The shaking assembly (16) includes a drive motor (161), a rotating shaft (162), a drive block (163) and a connecting frame (164). The drive motor (161) is fixedly mounted on the fixing plate (14). The rotating shaft (162) is fixedly mounted on the output shaft of the drive motor (161). The drive 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). The drive block (163) is movably connected to the inner wall of the connecting frame (164).

2. The forest soil carbon sequestration metering and monitoring device according to claim 1, characterized in that: The mounting frame (5) and the fixing frame (6) are both U-shaped. The bottom of the excavation shovel (72) has a cutting edge, which is a triangular pyramid. The upper surface of the excavation shovel (72) is flush with the lower surface of the sampling tube (4). The outer gear ring (76) is located outside the inner gear ring (73), and the drive gear (78) is located inside the mounting frame (5).

3. The forest soil carbon sequestration metering and monitoring device according to claim 1, characterized in that: The bottom of the vehicle body (1) is equipped with rollers (8), the side wall of the vehicle body (1) is fixedly equipped with a handle (9), the outer surface of the handle (9) is fixedly equipped with a grip sleeve, and the inner wall of the sampling tube (4) is embedded with a scale (10).

4. The forest soil carbon sequestration metering and monitoring device according to claim 1, characterized in that: The two ends of the rotating shaft (162) are rotatably connected to the fixed plate (14). The driving block (163) is comma-shaped. The connecting frame (164) is square-shaped. The connecting frame (164) is slidably connected to the outer surface of the vertical rod (15). The bottom of the vertical rod (15) is fixedly installed with a stop block (17) corresponding to the connecting frame (164).

5. A method for measuring and monitoring carbon sequestration in forest soil, characterized in that: The forest soil carbon sequestration metering and monitoring device as described in claim 4 specifically includes the following steps: S1: Determine the sampling area, push the vehicle (1), and move the sampling tube (4) below to the soil to be sampled; S2: The soil in the sampling area is excavated, the hydraulic cylinder (121) extends, 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 internal gear ring (73) and multiple transmission gears (74), multiple movable shafts (71) and excavation shovels (72) rotate together, and multiple excavation shovels (72) rotate to 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 drive gear (78) and the external gear ring (76), multiple excavation shovels (72) rotate around the axis of the sampling cylinder (4) to divide the soil in the excavation shovel (72) and the soil in the sampling area, so that the sampled soil sample is a relatively complete cylinder. S4: Move the sampled soil to the monitoring area, the hydraulic cylinder (121) retracts, and multiple excavation shovels (72) lift the soil sample in the sampling tube (4), push the vehicle (1), and send the sampled soil to the monitoring area; S5: Calculate the carbon sequestration of the sampled forest soil using the formula. ,in , , , , ; S6: Analyze the carbon sequestration of the sampled forest soil. Calculation results, if This indicates that compared to the previous year, more carbon dioxide was effectively absorbed and fixed by forest soils, which has a positive impact on achieving the dual carbon targets; if This indicates that the carbon storage in the forest soil has not changed compared to the previous year, and the forest soil has not fixed more carbon dioxide; if This indicates that compared to the previous year, the carbon storage in the soil has decreased, and the amount of carbon dioxide absorbed and fixed in forest soils has decreased.

6. The method for monitoring and measuring forest soil carbon sequestration according to claim 5, characterized in that: The Carbon storage in soil changes; This is the conversion coefficient between carbon dioxide and carbon. ; This represents the soil carbon storage of the sampled soil in that year. Soil carbon storage in samples taken in the previous year; The soil organic carbon density of the sampled soil; The soil thickness of the sampled soil; The mass of soil organic carbon in the sample was determined by combustion oxidation-titration method; This represents the soil volume of the sampled soil. The diameter of the soil sample. The diameter is equal to the inner wall diameter of the sampling tube (4).

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