Accurate forestry carbon sink biomass calculation method and device

Abstract

The invention discloses an accurate forestry carbon sink biomass calculation method and device. The device comprises an adjustable support, a horizontal rotating table arranged on the upper portion of the adjustable support and a distance measurement pitching table arranged on the upper portion of the horizontal rotating table. The adjustable support comprises a plurality of supporting rod assemblies circumferentially arranged at the bottom of the horizontal rotating table, supporting rod bodies are arranged in the middles of the supporting rod assemblies, conical standing feet are arranged at the bottoms of the supporting rod bodies, and connecting structures adjustably connected with the horizontal rotating table are arranged on the upper portions of the supporting rod bodies. By arranging the multiple supporting rod assemblies and the conical standing feet, the stability under the soft soil condition is guaranteed, height adjustment is achieved through the screw rod fine adjustment system, and horizontal calibration of complex terrains can be achieved in cooperation with the circular level; a spherical coordinate system is formed by the horizontal rotating table and the distance measuring pitching table, and polar coordinate positioning of any position of a trunk can be achieved in cooperation with the laser distance measuring instrument. The method is simple in operation process and high in measurement precision.

Description

Technical Field

[0001] The present utility model relates to the field of forestry carbon sinks, and specifically relates to an accurate method and device for calculating forestry carbon sink biomass. Background Art

[0002] The development of forestry carbon sinks is not only an important option for addressing climate change, but also an effective way to improve the management level and production efficiency of forest land, and is an important carrier for achieving the dual goals of forestry ecology and economy in China. With the gradual establishment and development of the domestic carbon market, including forestry carbon sink projects, a relatively rapid development trend has emerged. According to the Chinese Certified Emission Reduction (CCER) and the international voluntary emission reduction methodology (VCS), forest biomass is the key data for calculating forestry carbon sinks. Obtaining forest biomass accurately and efficiently has important economic value and practical significance for the development of forestry carbon sinks.

[0003] Currently, the calculation of forest biomass mainly adopts statistical methods, that is, statistical data such as plant species, quantity, tree height, and tree diameter in a sample plot per unit area. Among them, the measurement of tree height mainly adopts the direct measurement method, that is, using tools such as a tape measure or a rangefinder to directly measure the distance from the ground to the top of the tree crown. This method is simple and direct, but due to the curvature of the tree trunk, it may not be very suitable for particularly tall trees. Quickly and accurately measuring the tree height and tree diameter in the sample plot is the key to calculating forestry carbon sink biomass. Therefore, there is an urgent need for an accurate method and device for calculating forestry carbon sink biomass to solve the practical problems of biomass calculation. Summary of the Invention

[0004] To solve the above technical problems, the technical solution provided by the present invention is: an accurate forestry carbon sink biomass calculation device, including an adjustable bracket, a horizontal rotating table arranged on the upper part of the adjustable bracket, and a ranging and pitching table arranged on the upper part of the horizontal rotating table; the adjustable bracket includes a plurality of support rod assemblies circumferentially arranged at the bottom of the horizontal rotating table, the middle of the support rod assembly is a support rod main body, a conical foot is arranged at the bottom of the support rod main body, and a connection structure that can be adjustably connected to the horizontal rotating table is arranged at the upper part; the horizontal rotating table includes a fixed table connected to the connection structure, a horizontal rotating table is rotatably connected to the upper part of the fixed table, a horizontal rotating ring rotatably connected to the fixed table is arranged on the outer edge of the horizontal rotating table, a horizontal rotating table fixing knob that can be locked with the fixed table is arranged at the center of the horizontal rotating table, and a horizontal rotating ring fixing knob that can be locked with the fixed table is arranged outside the horizontal rotating table; a circular spirit level is arranged on the outside of the fixed table; the ranging and pitching table includes a ranging instrument main body, a tube spirit level is arranged on the ranging instrument main body, brackets connected to the upper part of the horizontal rotating table are respectively arranged on both sides of the ranging instrument main body, the ranging instrument main body is rotatably connected to the brackets through rotating shafts on both sides respectively, at the same time, the ranging instrument main body passes through the rotating shaft and penetrates out of the bracket and then is connected to a vertical rotating table, a vertical rotating ring rotatably connected to the bracket is arranged outside the vertical rotating table, a ranging instrument fixing knob locked with the rotating shaft is arranged on the bracket, and a vertical ring fixing knob locked with the bracket is arranged on the vertical rotating ring.

[0005] Further, the support rod main body includes a hollow outer rod provided with a conical foot, and a screw rod telescopically connected inside the hollow outer rod. A screw knob is arranged at one end of the hollow outer rod away from the conical foot. The screw knob is arranged outside the screw rod. An internal thread and an external thread are cooperatively arranged between the inner side of the screw knob and the outer side of the screw rod. A connection structure is arranged at one end of the screw rod away from the hollow outer rod.

[0006] Further, the connection structure includes a bottom connecting plate arranged at the top of the screw rod. The bottom connecting plate is rotatably connected to a top connecting plate through a rivet. The top connecting plate is connected to the bottom of the fixed table.

[0007] Further, a first annular connection ring is circumferentially arranged on the outer edge of the fixed table. A first annular connection groove that is rotationally matched with the first annular connection ring is arranged at the bottom of the horizontal rotating ring. The horizontal rotating ring rotates along the outer edge of the fixed table through the cooperation of the first annular connection groove and the first annular connection ring. The cross sections of the first annular connection ring and the first annular connection groove are T-shaped. The horizontal rotating ring fixing knob penetrates through one side of the horizontal rotating ring and corresponds to the position of the first annular connection ring. When the horizontal rotating ring fixing knob is screwed inward, it contacts and locks with the outer wall of the first annular connection ring to fix the horizontal rotating ring.

[0008] Further, a central connecting column is provided in the middle of the fixed platform, and a central connecting groove that rotatably cooperates with the central connecting column is provided at the bottom of the horizontal rotating platform, so that the horizontal rotating platform rotates at the center of the top of the fixed platform through the cooperation of the central connecting groove and the central connecting column. The cross-sections of the central connecting column and the central connecting groove are T-shaped. The fixing knob of the horizontal rotating platform penetrates through the center of the top of the first horizontal rotating platform and corresponds to the position of the central connecting column. When the fixing knob of the horizontal rotating platform is screwed inward, it contacts and locks the outer wall of the central connecting column to fix the horizontal rotating platform.

[0009] Further, the horizontal rotating ring and the edge of the horizontal rotating platform are engraved with first scale lines, and the scale range of the first scale lines is 0 to ±180 degrees.

[0010] Further, a second annular connecting ring is circumferentially provided on the outer edge of the bracket, and a second annular connecting groove that rotatably cooperates with the second annular connecting ring is provided on the vertical rotating ring, so that the vertical rotating ring rotates on the outer edge of the bracket through the cooperation of the second annular connecting groove and the second annular connecting ring. The cross-sections of the second annular connecting ring and the second annular connecting groove are T-shaped. The fixing knob of the vertical rotating ring penetrates through one side of the second horizontal rotating ring and corresponds to the position of the second annular connecting ring. When the fixing knob of the vertical rotating ring is screwed inward, it contacts and locks the outer wall of the second annular connecting ring to fix the vertical rotating ring.

[0011] Further, a ranging instrument fixing knob corresponding to the position of the rotating shaft is provided at the top of the bracket, so that when the ranging instrument fixing knob is screwed inward, it contacts and locks the outer wall of the rotating shaft to fix the ranging instrument.

[0012] Further, the vertical rotating ring and the edge of the vertical rotating platform are engraved with second scale lines, and the scale range of the second scale lines is 0 to ±180 degrees.

[0013] Its usage method includes the following steps:

[0014] (1) Fix the equipment: First, open the support rod to an appropriate angle of outward inclination, and insert the foot at the bottom of the support rod into the soil to fix the entire equipment.

[0015] (2) Level the equipment: Rotate the screw knobs on each support rod to adjust the lifting of each threaded rod. At this time, observe the circular spirit level, and finally ensure that the bubble in the circular spirit level is centered, so as to level the horizontal rotating platform.

[0016] (3) Align the target: Horizontally rotate the rangefinder so that the rangefinder is aligned with the center of the tree to be measured. Tighten the fixing knob of the horizontal rotating table. Vertically rotate the rangefinder so that the tube level is centered. Tighten the fixing knob of the vertical rotating table. Rotate the horizontal rotating ring so that the 0 scale line on the horizontal rotating ring is aligned with the 0 scale line on the horizontal rotating table. Tighten the fixing knob of the horizontal rotating ring.

[0017] (4) Measure the tree diameter parameter: Loosen the fixing knob of the horizontal rotating table, rotate the rangefinder to align with one side edge of the tree trunk, record the degree a of the rangefinder, read the rotated angle J1, rotate the rangefinder to align with the other side edge of the tree trunk, and read the rotated angle J2.

[0018] (5) Measure the tree height parameter: Align the 0 scale line on the horizontal rotating table with the 0 scale line on the horizontal rotating ring. Tighten the fixing knob of the horizontal rotating table. Rotate the 0 scale line of the vertical rotating ring to align with the 0 scale line on the vertical rotating table. Tighten the fixing knob of the vertical rotating ring. Loosen the fixing knob of the vertical rotating table, vertically rotate the rangefinder to align with the tree root, record the degree b of the rangefinder, read the rotated angle J3, rotate the rangefinder to align with the tree top, record the degree c of the rangefinder, and read the rotated angle J4.

[0019] (6) Calculate the tree diameter and tree height: Calculate the tree diameter and tree height according to the following formula:

[0020] Tree diameter = a×sinJ1 + a×sinJ2;

[0021] Tree height = b×sinJ3 + c×sinJ4.

[0022] The advantages of the present invention compared with the prior art are as follows: By setting multiple support rod components and conical footrests, the stability under soft soil conditions is ensured, and the height adjustment is realized through the screw rod fine-tuning system. With the cooperation of the circular level, the horizontal calibration of complex terrains can be achieved; A spherical coordinate system is formed by the horizontal rotating table and the ranging and pitching table, and the polar coordinate positioning of any position on the tree trunk can be realized with the cooperation of the laser rangefinder; Both the horizontal / vertical rotating tables adopt the annular connecting ring with a T-shaped cross-section and the connecting groove, which can increase the bearing capacity and has excellent dust-proof performance, suitable for field environments; The present invention can meet the requirements of forestry carbon sink biomass calculation, can measure the tree diameters and tree heights of multiple trees in a sample plot at the same time, has a simple operation process and high measurement accuracy. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the equipment appearance of an accurate forestry carbon sink biomass calculation device of the present invention.

[0024] Figure 2 It is a schematic diagram of the support rod in an accurate forestry carbon sink biomass calculation device of the present invention

[0025] Figure 3 It is a schematic diagram of the horizontal rotating table in an accurate forestry carbon sink biomass calculation device of the present invention.

[0026] Figure 4 It is a cross-sectional schematic diagram of the horizontal rotating table in an accurate forestry carbon sink biomass calculation device of the present invention.

[0027] Figure 5 It is a disassembled schematic diagram of the horizontal rotating table in an accurate forestry carbon sink biomass calculation device of the present invention Figure 1 .

[0028] Figure 6 It is a disassembled schematic diagram of the horizontal rotating table in an accurate forestry carbon sink biomass calculation device of the present invention Figure 2 .

[0029] Figure 7 It is a schematic diagram of the ranging pitching table in an accurate forestry carbon sink biomass calculation device of the present invention.

[0030] Figure 8 It is a cross-sectional schematic diagram of the ranging pitching table in an accurate forestry carbon sink biomass calculation device of the present invention.

[0031] Figure 9 It is a disassembled schematic diagram of the ranging pitching table in an accurate forestry carbon sink biomass calculation device of the present invention Figure 1 .

[0032] Figure 10 It is a disassembled schematic diagram of the ranging pitching table in an accurate forestry carbon sink biomass calculation device of the present invention Figure 2 .

[0033] Figure 11 It is a schematic diagram of the scale in an accurate forestry carbon sink biomass calculation device of the present invention. Specific embodiments

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0035] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] In addition, if terms such as "horizontal", "vertical", "hanging", etc. appear, it does not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the embodiments of the present invention, "a plurality of" represents at least two.

[0038] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0039] Embodiment:

[0040] Combined with the attached Figure 1-11, this embodiment discloses an accurate forestry carbon sink biomass calculation device, including an adjustable support 1, a horizontal rotating table 2 arranged on the upper part of the adjustable support 1, and a ranging and pitching table 3 arranged on the upper part of the horizontal rotating table 2; the adjustable support 1 includes a plurality of support rod assemblies circumferentially arranged at the bottom of the horizontal rotating table 2, the middle of the support rod assembly is a support rod main body, a conical foot 4 is arranged at the bottom of the support rod main body, and a connection structure that can be adjustably connected to the horizontal rotating table 2 is arranged at the upper part; the horizontal rotating table 2 includes a fixed table 10 connected to the connection structure, a horizontal rotating table 2 is rotatably connected to the upper part of the fixed table 10, a horizontal rotating ring 12 rotatably connected to the fixed table 10 is arranged on the outer edge of the horizontal rotating table 2, a horizontal rotating table fixing knob 15 that can be locked with the fixed table 10 is arranged at the center of the horizontal rotating table 2, and a horizontal rotating ring fixing knob 13 that can be locked with the fixed table 10 is arranged outside the horizontal rotating table 2; a circular spirit level 11 is arranged outside the fixed table 10; the ranging and pitching table 3 includes a ranging instrument main body 19, a tube spirit level 21 is arranged on the ranging instrument main body 19, brackets 18 connected to the upper part of the horizontal rotating table 2 are respectively arranged on both sides of the ranging instrument main body 19, the ranging instrument main body 19 is respectively rotatably connected to the brackets 18 through rotating shafts 23, at the same time, the ranging instrument main body 19 passes through the brackets 18 through the rotating shafts 23 and then is connected to a vertical rotating table 17, a vertical rotating ring 16 rotatably connected to the brackets 18 is arranged outside the vertical rotating table 17, a ranging instrument fixing knob 20 that can be locked with the rotating shaft 23 is arranged on the brackets 18, and a vertical rotating ring fixing knob 16 that can be locked with the brackets 18 is arranged on the vertical rotating ring 16.

[0041] The support rod main body includes a hollow outer rod 5 provided with a conical foot 4, and a spiral rod 7 telescopically connected inside the hollow outer rod 5. A spiral knob 6 is arranged at one end of the hollow outer rod 5 away from the conical foot 4. The spiral knob 6 is arranged outside the spiral rod 7. Internal threads and external threads are cooperatively arranged between the inner side of the spiral knob 6 and the outer side of the spiral rod 7. A connection structure is arranged at one end of the spiral rod 7 away from the hollow outer rod 5.

[0042] The connection structure includes a bottom connecting plate 8 arranged at the top of the spiral rod 7. The bottom connecting plate 8 is rotatably connected to a top connecting plate 9 through a rivet. The top connecting plate 9 is connected to the bottom of the fixed table 10. The top of the bottom connecting plate 8 is a large arc plate, the bottom of the top connecting plate is a small arc plate, and the rivet is arranged at the center of the large arc plate, so that the bottom connecting plate and the top connecting plate can rotate relative to each other.

[0043] A first annular connection ring 24 is circumferentially arranged along the outer edge of the fixed platform 10. A first annular connection groove 25 that is rotationally matched with the first annular connection ring 24 is arranged at the bottom of the horizontal rotation ring 12, so that the horizontal rotation ring 12 rotates along the outer edge of the fixed platform 10 through the cooperation between the first annular connection groove 25 and the first annular connection ring 24. The cross-sections of the first annular connection ring 24 and the first annular connection groove 25 are T-shaped. The horizontal rotation ring fixing knob 13 penetrates through one side of the horizontal rotation ring 12 and corresponds to the position of the first annular connection ring 24, so that when the horizontal rotation ring fixing knob 13 is screwed inwards, it contacts and locks with the outer wall of the first annular connection ring 24 to fix the horizontal rotation ring 12.

[0044] A central connection column 26 is arranged in the middle of the fixed platform 10. A central connection groove 27 that is rotationally matched with the central connection column 26 is arranged at the bottom of the horizontal rotation platform 2, so that the horizontal rotation platform 2 rotates at the center of the top of the fixed platform 10 through the cooperation between the central connection groove 27 and the central connection column 26. The cross-sections of the central connection column 26 and the central connection groove 27 are T-shaped. The horizontal rotation platform fixing knob 15 penetrates through the center of the top of the first horizontal rotation platform 2 and corresponds to the position of the central connection column 26, so that when the horizontal rotation platform fixing knob 15 is screwed inwards, it contacts and locks with the outer wall of the central connection column 26 to fix the horizontal rotation platform 2.

[0045] First scale lines are engraved on the edges of the horizontal rotation ring 12 and the horizontal rotation platform 2, and the scale range of the first scale lines is 0 to ±180 degrees.

[0046] A second annular connection ring 28 is circumferentially arranged along the outer edge of the support 18. A second annular connection groove 29 that is rotationally matched with the second annular connection ring 28 is arranged on the vertical rotation ring 16, so that the vertical rotation ring 16 rotates along the outer edge of the support 18 through the cooperation between the second annular connection groove 29 and the second annular connection ring 28. The cross-sections of the second annular connection ring 28 and the second annular connection groove 29 are T-shaped. The vertical rotation ring fixing knob penetrates through one side of the second horizontal rotation ring 12 and corresponds to the position of the second annular connection ring 28, so that when the vertical rotation ring fixing knob is screwed inwards, it contacts and locks with the outer wall of the second annular connection ring 28 to fix the vertical rotation ring 16.

[0047] A distance measuring instrument fixing knob 20 corresponding to the position of the rotating shaft 23 is arranged at the top of the support 18, so that when the distance measuring instrument fixing knob 20 is screwed inwards, it contacts and locks with the outer wall of the rotating shaft 23 to fix the distance measuring instrument.

[0048] Second scale lines are engraved on the edges of the vertical rotation ring 16 and the vertical rotation platform 17, and the scale range of the second scale lines is 0 to ±180 degrees.

[0049] Its usage method includes the following steps:

[0050] (1) Fixing device: First, open the support rod to an appropriate outward-inclined angle, insert the foot 4 at the bottom of the support rod into the soil, and then fix the entire device.

[0051] (2) Levelling device: Rotate the screw knobs 6 on each support rod to adjust the lifting of each threaded rod. At this time, observe the circular spirit level 11, and finally ensure that the bubble in the circular spirit level 11 is centered, so as to level the horizontal rotating table 2.

[0052] (3) Aligning with the target: Horizontally rotate the rangefinder so that the rangefinder is aligned with the center of the tree to be measured. Tighten the fixing knob 15 of the horizontal rotating table. Vertically rotate the rangefinder so that the tube spirit level 21 is centered. Tighten the fixing knob of the vertical rotating table 17. Rotate the horizontal rotating ring 12 so that the 0 scale line on the horizontal rotating ring 12 is aligned with the 0 scale line on the horizontal rotating table 2. Tighten the fixing knob 13 of the horizontal rotating ring.

[0053] (4) Measuring the tree diameter parameter: Loosen the fixing knob 15 of the horizontal rotating table, rotate the rangefinder to align with one side edge of the tree trunk, record the degree a of the rangefinder, read the rotated angle J1, rotate the rangefinder to align with the other side edge of the tree trunk, and read the rotated angle J2.

[0054] (5) Measuring the tree height parameter: Align the 0 scale line on the horizontal rotating table 2 with the 0 scale line on the horizontal rotating ring 12. Tighten the fixing knob 15 of the horizontal rotating table. Align the 0 scale line of the vertical rotating ring 16 with the 0 scale line on the vertical rotating table 17. Tighten the fixing knob of the vertical rotating ring 16. Loosen the fixing knob of the vertical rotating table 17. Vertically rotate the rangefinder to align with the tree root, record the degree b of the rangefinder, read the rotated angle J3, rotate the rangefinder to align with the tree top, record the degree c of the rangefinder, and read the rotated angle J4.

[0055] (6) Calculating the tree diameter and tree height: Calculate the tree diameter and tree height according to the following formulas:

[0056] Tree diameter = a×sinJ1 + a×sinJ2;

[0057] Tree height = b×sinJ3 + c×sinJ4.

[0058] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An accurate forestry carbon sink biomass calculation device, characterized in that: The invention comprises an adjustable bracket, a horizontal rotating platform arranged on the upper part of the adjustable bracket, and a ranging pitch platform arranged on the upper part of the horizontal rotating platform; the adjustable bracket comprises a plurality of support rod assemblies circumferentially arranged on the bottom of the horizontal rotating platform, the middle part of the support rod assembly is a support rod body, the bottom of the support rod body is provided with a conical stop, and the upper part is provided with a connecting structure that is adjustably connected to the horizontal rotating platform; the horizontal rotating platform comprises a fixed platform connected to the connecting structure, the upper part of the fixed platform is rotatably connected to the horizontal rotating platform, the outer edge of the horizontal rotating platform is provided with a horizontal rotating ring rotatably connected to the fixed platform, the center of the horizontal rotating platform is provided with a horizontal rotating platform fixing knob that can be locked with the fixed platform, and the horizontal rotating platform is provided with a horizontal rotating platform fixing knob that can be locked with the fixed platform. A horizontal rotating ring fixing knob which can be locked with the fixed platform is arranged outside the horizontal rotating platform; a circular level is arranged outside the fixed platform; the ranging pitch platform comprises a rangefinder body, a tube level is arranged on the rangefinder body, brackets connected with the upper part of the horizontal rotating platform are arranged on both sides of the rangefinder body, and the two sides of the rangefinder body are rotatably connected with the brackets through rotating shafts. At the same time, the rangefinder body is connected to the vertical rotating platform after passing through the bracket through the rotating shaft, a vertical rotating ring rotatably connected with the bracket is arranged outside the vertical rotating platform, a rangefinder fixing knob locked with the rotating shaft is arranged on the bracket, and a vertical ring fixing knob locked with the bracket is arranged on the vertical rotating ring.

2. According to claim 1, an accurate forestry carbon sink biomass calculation device is characterized in that: The support rod body includes a hollow outer rod with a conical foot, and a spiral rod telescopically connected to the hollow outer rod. A spiral knob is provided at one end of the hollow outer rod away from the conical foot. The spiral knob is arranged on the outside of the spiral rod. Internal threads and external threads are cooperated between the inner side of the spiral knob and the outer side of the spiral rod. A connecting structure is provided at one end of the spiral rod away from the hollow outer rod.

3. The accurate forestry carbon sink biomass calculation device according to claim 2 is characterized in that: The connection structure comprises a bottom connection plate arranged on the top of the spiral rod, the bottom connection plate is rotatably connected to the top connection plate through rivets, and the top connection plate is connected to the bottom of the fixing platform.

4. The accurate forestry carbon sink biomass calculation device according to claim 3 is characterized in that: A first annular connecting ring is circumferentially arranged on the outer edge of the fixed platform, and a first annular connecting groove which is rotatably matched with the first annular connecting ring is arranged on the bottom of the horizontal rotating ring, so that the horizontal rotating ring rotates on the outer edge of the fixed platform through the cooperation between the first annular connecting groove and the first annular connecting ring, and the cross-sections of the first annular connecting ring and the first annular connecting groove are T-shaped, and the horizontal rotating ring fixing knob is penetrated at one side of the horizontal rotating ring and corresponds to the position of the first annular connecting ring, so that when the horizontal rotating ring fixing knob is screwed inwardly, it contacts and locks with the outer wall of the first annular connecting ring to fix the horizontal rotating ring.

5. The accurate forestry carbon sink biomass calculation device according to claim 4 is characterized in that: A central connecting column is provided in the middle of the fixed platform, and a central connecting groove which is rotatably matched with the central connecting column is provided at the bottom of the horizontal rotating platform, so that the horizontal rotating platform can rotate at the center of the top of the fixed platform through the cooperation between the central connecting groove and the central connecting column. The cross-sections of the central connecting column and the central connecting groove are T-shaped, and the horizontal rotating platform fixing knob is penetrated through the center of the top of the first horizontal rotating platform and corresponds to the position of the central connecting column, so that when the horizontal rotating platform fixing knob is screwed inward, it contacts and locks with the outer wall of the central connecting column to fix the horizontal rotating platform.

6. The accurate forestry carbon sink biomass calculation device according to claim 5 is characterized in that: The edges of the horizontal rotating ring and the horizontal rotating platform are engraved with first scale lines, and the scale range of the first scale lines is 0 to ±180 degrees.

7. The accurate forestry carbon sink biomass calculation device according to claim 1 is characterized in that: A second annular connecting ring is circumferentially arranged on the outer edge of the bracket, and a second annular connecting groove which is rotatably matched with the second annular connecting ring is arranged on the vertical rotating ring, so that the vertical rotating ring rotates on the outer edge of the bracket through the cooperation between the second annular connecting groove and the second annular connecting ring, and the cross-sections of the second annular connecting ring and the second annular connecting groove are T-shaped, and the vertical rotating ring fixing knob is penetrated on one side of the second horizontal rotating ring and corresponds to the position of the second annular connecting ring, so that when the vertical rotating ring fixing knob is screwed inwardly, it contacts and locks with the outer wall of the second annular connecting ring to fix the vertical rotating ring.

8. The accurate forestry carbon sink biomass calculation device according to claim 7, characterized in that: The top of the bracket is provided with a rangefinder fixing knob corresponding to the position of the rotating shaft, so that when the rangefinder fixing knob is screwed inward, it contacts and locks with the outer wall of the rotating shaft to fix the rangefinder.

9. The accurate forestry carbon sink biomass calculation device according to claim 8, characterized in that: The edges of the vertical rotating ring and the vertical rotating platform are engraved with second scale lines, and the scale range of the second scale lines is 0 to ±180 degrees.

10. The accurate forestry carbon sink biomass calculation device according to claim 1, and the method of using the device comprises the following steps: (1) Fixing the equipment: First, open the support rod and tilt it outward to a suitable angle, insert the foot at the bottom of the support rod into the soil, and then fix the entire equipment; (2) Leveling device: Rotate the screw knobs on each support rod to adjust the height of each threaded rod. Observe the circular level at this time to ensure that the bubble of the circular level is centered, so that the horizontal rotary table can be adjusted to the level; (3) Aligning the target: Rotate the rangefinder horizontally to align it with the center of the tree to be measured, tighten the fixing knob of the horizontal rotating platform, rotate the rangefinder vertically to center the tube level, tighten the fixing knob of the vertical rotating platform, rotate the horizontal rotating ring so that the 0 scale line on the rotating horizontal rotating ring is aligned with the 0 scale line on the horizontal rotating platform, and tighten the fixing knob of the rotating horizontal rotating ring; (4) Measuring tree diameter parameters: Loosen the fixed knob of the horizontal rotating table, rotate the distance meter to align with the edge of one side of the tree trunk, record the distance meter degree a, read the rotation angle J1, rotate the distance meter to align with the edge of the other side of the tree trunk, and read the rotation angle J2; (5) Measure tree height parameters: align the 0 scale line on the horizontal rotating platform with the 0 scale line on the rotating horizontal rotating ring, tighten the fixing knob of the horizontal rotating platform, align the 0 scale line on the rotating vertical rotating ring with the 0 scale line on the vertical rotating platform, tighten the fixing knob of the vertical rotating ring, loosen the fixing knob of the vertical rotating platform, vertically rotate the rangefinder, align it with the tree root, record the rangefinder degree b, read the rotation angle J3, rotate the rangefinder to align it with the tree top, record the rangefinder degree c, and read the rotation angle J4; (6) Calculate the tree diameter and tree height: Calculate the tree diameter and tree height according to the following formula: Tree diameter = a×sinJ1+a×sinJ2; Tree height = b×sinJ3+c×sinJ4.

Images