A device for determining net carbon sink and respiration intensity of an ecosystem

Abstract

This invention belongs to the technical field of quantitative research on different carbon flux components in ecosystems, and particularly relates to a device for measuring the net carbon sink and respiration intensity of an ecosystem. The device includes: a housing; a sealed base for creating a sealed space between the interior of the housing and the ground; an air intake component connected to one side wall of the housing for introducing gas into the housing and ensuring uniform gas distribution within the housing; an air outlet component connected to the other side wall of the housing for discharging gas from the housing; a circulation turbulence component located inside the housing for driving gas flow within the housing; and a power component located at the top of the housing for providing power to the circulation turbulence component. This invention achieves uniform gas distribution and efficient circulation within the housing, improves sealing reliability, simplifies assembly and handling processes, and ensures the accuracy and convenience of measuring the net carbon sink and respiration intensity of an ecosystem.

Description

Technical Field

[0001] This invention belongs to the field of quantitative research technology on different carbon flux components in ecosystems, and particularly relates to a device for measuring net carbon sink and respiration intensity in ecosystems. Background Technology

[0002] In the field of measuring different carbon flux components in ecosystems, accurate measurement of net carbon sinks and respiration intensity is crucial for studying ecosystem carbon cycling. Existing assimilation chamber systems used for this measurement have several shortcomings.

[0003] From a structural perspective, the gas transmission structure of traditional assimilation chambers is poorly designed, resulting in uneven gas distribution within the chamber and inconsistent gas concentrations in the measurement area, which affects the accuracy of carbon flux data. The circulation device is rudimentary and cannot efficiently mix the gas within the chamber, leading to significant differences in gas parameters at different locations within the chamber. Existing assimilation chambers often have inadequate or even nonexistent stirring fans, making it difficult to achieve uniform gas circulation throughout the chamber.

[0004] In terms of sealing structure, traditional assimilation chambers have poor sealing performance with the soil or base, allowing external gases to easily seep in and internal gases to leak, interfering with carbon flux measurement results. Some assimilation chambers are directly embedded in the soil, or use only simple rubber strips for sealing; with long-term use or environmental influences (such as soil settlement and wind), the sealing performance deteriorates. Furthermore, the component installation and fixing structure of existing assimilation chambers is complex, assembly is time-consuming, and transportation is inconvenient, hindering rapid, multi-site field measurements.

[0005] Therefore, it is necessary to design a device to measure the net carbon sink and respiration intensity of an ecosystem in order to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a device for measuring net carbon sink and respiration intensity in an ecosystem, achieving uniform gas distribution and efficient circulation within the chamber, improving sealing reliability, simplifying assembly and handling processes, and ensuring the accuracy and convenience of measuring net carbon sink and respiration intensity in an ecosystem.

[0007] To achieve the above objectives, the present invention provides the following solution: an apparatus for measuring the net carbon sink and respiration intensity of an ecosystem, comprising:

[0008] The box has an opening at the bottom.

[0009] A sealing base is disposed at the bottom of the box body, and the sealing base is used to create a sealed space between the inside of the box body and the ground.

[0010] An air intake assembly is connected to one side wall of the housing. The air intake assembly is used to introduce gas into the housing and to make the gas evenly distributed in the housing.

[0011] An exhaust assembly is connected to the other side wall of the housing, and the exhaust assembly is used to exhaust gas from the housing.

[0012] A circulating turbulence component is disposed inside the housing, and the circulating turbulence component is used to drive the gas to flow inside the housing.

[0013] A power assembly is disposed at the top of the housing, and the power assembly is used to provide power output to the circulating turbulence assembly;

[0014] The handle is fixedly installed on the outer wall of the box.

[0015] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem includes an air intake assembly comprising a quick connector fixedly connected to the side wall of the housing, the quick connector being detachably connected to an air intake pipe at one end of the quick connector located outside the housing, and the quick connector being connected to an air intake section at one end of the quick connector located inside the housing.

[0016] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided. The air inlet includes a bend tube, which is Z-shaped. One end of the bend tube is connected to a quick connector, and the other end of the bend tube is sealed and rotatably connected to a distribution pipe. A plurality of through holes are provided on the side wall of the distribution pipe, and the plurality of through holes are equally spaced along the circumferential and axial directions of the side wall of the distribution pipe.

[0017] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided. The circulating turbulence component includes two second mounting seats, which are respectively disposed at opposite ends of the diagonal inside the housing. The second mounting seats are inclined and the angle between the second mounting seat and the inner sidewall of the housing is 45°. The two second mounting seats are spaced apart vertically. Each second mounting seat is rotatably mounted with a fan, and the fan is electrically connected to the power component.

[0018] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided. The sealed base includes an outer frame, a square support plate is fixedly connected to the inner side wall of the outer frame, an inner frame is fixedly connected to the inner side wall of the square support plate, a sealing groove is formed between the outer frame, the square support plate, and the inner frame, the bottom end of the box body is adapted to the sealing groove, and a sealing part is provided in the sealing groove.

[0019] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided, wherein the sealing part includes a sealing strip, the sealing strip is fixedly connected to the square support plate, and the sealing strip is in contact with the outer frame and the inner frame.

[0020] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided, wherein the sealing part includes a sealing liquid, which fills the sealing groove.

[0021] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided. The air outlet component includes a quick connector, which is fixedly connected to the side wall of the housing. One end of the quick connector located on the outside of the housing is detachably connected to an air outlet pipe. The air outlet pipe and the air inlet pipe are respectively disposed on opposite side walls of the housing.

[0022] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided. The power component includes a first mounting base, which is fixedly connected to the top of the housing. The first mounting base has a wire hole, and a mobile power supply is detachably mounted on the first mounting base. The power cord of the mobile power supply passes through the wire hole and is electrically connected to the fan.

[0023] According to the present invention, an apparatus for measuring net carbon sink and respiration intensity of an ecosystem is provided, wherein the container is made of a transparent material.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects:

[0025] This invention achieves forced convection through an air intake component and a circulation turbulence component, improving the uniformity of gas concentration within the chamber and ensuring the accuracy of carbon flux measurement data. This provides a more reliable basis for calculating ecosystem net carbon sinks and respiration intensity. The chamber is made of transparent material for measuring ecosystem carbon sinks, but it can also be covered to measure ecosystem respiration, enabling efficient measurement of multiple carbon flux indicators within a single system.

[0026] The sealed base effectively prevents external gas interference and gas leakage inside the chamber, ensuring the accuracy of net carbon sink and respiration intensity measurements in the ecosystem.

[0027] The detachable connection design of this invention reduces system assembly time by 40%-50% compared to traditional assimilation boxes; the handle optimizes the handling of the box, allowing for convenient handling by a single person. In field multi-site measurement operations, the overall work efficiency is greatly improved, reducing labor and time costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0029] Figure 1This is a schematic diagram of the overall invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0031] Figure 3 This is a schematic diagram of the air intake assembly of the present invention;

[0032] Figure 4 This is a schematic diagram of the sealing base of the present invention;

[0033] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention.

[0034] The components are as follows: 1. Housing; 2. Inlet pipe; 3. Quick connector; 4. Distributor pipe; 5. Bend; 6. Outlet pipe; 7. First mounting base; 8. Wiring hole; 9. Second mounting base; 10. Fan; 11. Handle; 12. Outer frame; 13. Square support plate; 14. Inner frame; 15. Through hole. Detailed Implementation

[0035] 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.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] Reference Figures 1 to 4 As shown, this embodiment provides an apparatus for measuring the net carbon sink and respiration intensity of an ecosystem, comprising:

[0039] Box 1, with an opening at the bottom;

[0040] A sealing base is provided at the bottom of the housing 1. The sealing base is used to create a sealed space between the inside of the housing 1 and the ground.

[0041] The air intake assembly is connected to one side wall of the housing 1. The air intake assembly is used to introduce gas into the housing 1 and to make the gas evenly distributed in the housing 1.

[0042] The venting assembly is connected to the other side wall of the housing 1 and is used to vent gas out of the housing 1.

[0043] A circulating turbulence component is installed inside the housing 1. The circulating turbulence component is used to drive the gas to flow inside the housing 1.

[0044] The power assembly is located at the top of housing 1 and is used to provide power output to the circulating turbulence assembly.

[0045] The handle 11 is fixedly installed on the outer side wall of the box 1.

[0046] The handle 11 facilitates the operator's movement of the box, and the symmetrical installation design ensures balanced force during handling. All mounting components are connected to the box 1 via slots, clips, or screws, making installation simple and disassembly quick.

[0047] Furthermore, the air intake assembly includes a quick connector 3, which is fixedly connected to the side wall of the housing 1. One end of the quick connector 3 located on the outside of the housing 1 is detachably connected to the air intake pipe 2, and the other end of the quick connector 3 located inside the housing 1 is connected to the air intake section.

[0048] Furthermore, the air intake includes a bend 5, which is Z-shaped. One end of the bend 5 is connected to the quick connector 3, and the other end of the bend 5 is sealed and rotatably connected to the air distribution pipe 4. Several through holes 15 are provided on the side wall of the air distribution pipe 4, and the several through holes 15 are equally spaced along the circumference and axial direction of the side wall of the air distribution pipe 4.

[0049] The axis of the through hole 15 is perpendicular to the tangent of the side wall of the gas distribution pipe 4.

[0050] Furthermore, the circulating turbulence assembly includes two second mounting seats 9, which are respectively located at opposite ends of the diagonal inside the housing 1. The second mounting seats 9 are inclined, and the angle between the second mounting seat 9 and the inner sidewall of the housing 1 is 45°. The two second mounting seats 9 are spaced apart vertically, and a fan 10 is rotatably mounted on each second mounting seat 9. The fan 10 is electrically connected to the power assembly.

[0051] The second mounting base 9 is fixed to the inner wall of the housing 1, providing a mounting base for the fan 10 and ensuring the stability of the fan 10's position. When the fan 10 is working, it accelerates the gas flow inside the housing, promoting thorough gas mixing and eliminating measurement errors caused by uneven gas distribution. The fan 10 is powered by a power assembly, enabling a continuous supply of circulating power.

[0052] Furthermore, the sealing base includes an outer frame 12, a square support plate 13 is fixedly connected to the inner side wall of the outer frame 12, and an inner frame 14 is fixedly connected to the inner side wall of the square support plate 13. A sealing groove is formed between the outer frame 12, the square support plate 13, and the inner frame 14. The bottom end of the box 1 is adapted to the sealing groove, and a sealing part is provided in the sealing groove.

[0053] The outer frame 12 can be inserted into the soil to increase the sealing performance in contact with the soil; the inner frame 14 is used to limit the installation position of the box 1 to ensure that the box 1 is precisely aligned with the sealing base; the square support plate 13 supports the box 1 and, together with the sealing part, prevents gas leakage.

[0054] Furthermore, the sealing part includes a sealing strip, which is fixedly connected to the square support plate 13 and contacts the outer frame 12 and the inner frame 14.

[0055] The box 1 and the square tray 13 are connected by a slot and a sealing strip to achieve a double seal and enhance airtightness.

[0056] Furthermore, the sealing part includes a sealing fluid, which fills the sealing groove.

[0057] Furthermore, the air outlet assembly includes a quick connector 3, which is fixedly connected to the side wall of the housing 1. One end of the quick connector 3 located on the outside of the housing 1 is detachably connected to an air outlet pipe 6. The air outlet pipe 6 and the air inlet pipe 2 are respectively located on opposite side walls of the housing 1.

[0058] The intake pipe 2 is used to introduce external gas. It is connected to the distribution pipe 4 via the quick connector 3. The distribution pipe 4 can disperse the gas into the housing 1, increasing the gas distribution range. The exhaust pipe 6 is used to discharge the gas. The quick connector 3 can quickly complete the connection and disassembly of the pipe, which is convenient for assembly and maintenance. Its internal channel design ensures smooth gas transmission without obvious obstruction.

[0059] Furthermore, the power assembly includes a first mounting base 7, which is fixedly connected to the top of the housing 1. A wire hole 8 is provided on the first mounting base 7, and a power supply is detachably mounted on the first mounting base 7. The power cord of the power supply passes through the wire hole 8 and is electrically connected to the fan 10.

[0060] Furthermore, the material of box 1 is transparent.

[0061] During assembly, first connect one end of the air inlet pipe 2 to one end of the quick connector 3, and connect the other end of the quick connector 3 to the bend pipe 5 and the air distribution pipe 4 to complete the initial assembly of the air inlet component; similarly, connect the quick connector 3 to the air outlet pipe 6 to form the air outlet component. Install the air inlet component and the air outlet component into the pre-set mounting holes and slots on the side wall of the housing 1, and fix them with buckles to ensure a tight connection and no air leakage. Fix the second mounting base 9 to a suitable position on the inner wall of the housing 1 with screws, insert the fan 10 into the second mounting base 9, and connect the power cord of the fan 10 to the wiring hole 8. Install the first mounting base 7 on the top of the housing 1, place the power supply and connect it to the power supply. Install the handles 11 and fix them symmetrically on the two side walls of the housing 1; finally, place the outer frame 12 in the measurement area, ensuring that the outer frame 12 is inserted into the soil to a depth of not less than 8cm, align the housing 1 with the inner frame 14 and place it on the square support plate 13, and check the sealing.

[0062] During the measurement, an ecosystem measurement area was selected in the field. After installing the assimilation box system, the gas exchange channel between box 1 and the outside was closed, and fan 10 was started to allow the gas inside box 1 to circulate and mix for 10 seconds until it stabilized. The gas composition inside box 1 was measured at different time points by connecting the inlet pipe 2 and the outlet pipe 6 to a gas analyzer. The net carbon sink and respiration intensity of the ecosystem were calculated based on the changes in gas concentration.

[0063] Comparative experiments were conducted between a traditional assimilation chamber and the system of this invention under the same ecological plots and environmental conditions. The deviation in gas concentration measured by the traditional assimilation chamber was 16%, while that of the system of this invention was 4%; the gas leakage rate of the traditional assimilation chamber was 10%, while that of the system of this invention was 1.5%. Statistical analysis of multiple experiments showed that the net carbon sink data measured by the system of this invention deviated from the theoretical value by less than 5%, and the deviation in respiration intensity measurement was less than 4%, demonstrating a significant improvement in accuracy compared to the traditional system. The handle 11 of this invention optimizes the handling operation, allowing for convenient transport by a single person. In multi-site field measurement operations, the overall work efficiency is improved by approximately 40%, reducing labor and time costs.

[0064] Example 2:

[0065] Reference Figure 5 As shown, the difference between this embodiment and embodiment one is that the axis of the through hole 15 has an angle with the tangent of the side wall of the gas distribution pipe 4, and the gas distribution pipe 4 is also rotatably sealed to the bend pipe 5. This design allows the gas to exert a reverse thrust on the gas distribution pipe 4 when it is discharged through the through hole 15, causing the gas distribution pipe 4 to rotate and further accelerate the uniform speed of the gas in the box 1.

[0066] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0067] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. An apparatus for determining net carbon sink and respiration intensity of an ecosystem, characterized in that, include: Box body (1), with an opening at the bottom; A sealing base is provided at the bottom of the box (1), and the sealing base is used to form a sealed space between the inside of the box (1) and the ground; An air intake assembly is connected to one side wall of the housing (1) and is used to introduce gas into the housing (1); An exhaust assembly is connected to the other side wall of the housing (1) and is used to exhaust gas from the housing (1); A circulating turbulence assembly is disposed inside the housing (1) and is used to drive the gas to flow inside the housing (1); A power assembly is disposed at the top of the housing (1), and the power assembly is used to provide power output for the circulating turbulence assembly; The air intake assembly includes a quick connector (3), which is fixedly connected to the side wall of the housing (1). One end of the quick connector (3) located outside the housing (1) is detachably connected to an air intake pipe (2), and the other end of the quick connector (3) located inside the housing (1) is connected to an air intake section. The air intake includes a bend (5), which is Z-shaped. One end of the bend (5) is connected to the quick connector (3), and the other end of the bend (5) is sealed and rotatably connected to a distribution pipe (4). Several through holes (15) are provided on the side wall of the distribution pipe (4). The several through holes (15) are equally spaced along the circumferential and axial directions of the side wall of the distribution pipe (4). The circulating turbulence assembly includes two second mounting seats (9), which are respectively disposed at the two ends of the diagonal inside the housing (1). The second mounting seats (9) are inclined and the angle between the second mounting seat (9) and the inner sidewall of the housing (1) is 45°. The two second mounting seats (9) are arranged vertically at intervals. Each second mounting seat (9) is rotatably equipped with a fan (10), and the fan (10) is electrically connected to the power assembly. The sealing base includes an outer frame (12), a square support plate (13) is fixedly connected to the inner side wall of the outer frame (12), an inner frame (14) is fixedly connected to the inner side wall of the square support plate (13), a sealing groove is formed between the outer frame (12), the square support plate (13), and the inner frame (14), the bottom end of the box (1) is adapted to the sealing groove, and a sealing part is provided in the sealing groove.

2. The device for measuring the net carbon sink and the respiration intensity of an ecosystem according to claim 1, characterized in that, The sealing part includes a sealing strip, which is fixedly connected to the square support plate (13) and is in contact with the outer frame (12) and the inner frame (14).

3. The device for measuring the net carbon sink and the respiration intensity of an ecosystem according to claim 1, characterized in that, The sealing part includes a sealing fluid, which fills the sealing groove.

4. The apparatus for measuring net carbon sink and respiration intensity in an ecosystem according to claim 1, characterized in that, The air outlet assembly includes a quick connector (3), which is fixedly connected to the side wall of the housing (1). One end of the quick connector (3) located outside the housing (1) is detachably connected to an air outlet pipe (6). The air outlet pipe (6) and the air inlet pipe (2) are respectively located on opposite side walls of the housing (1).

5. The apparatus for measuring net carbon sink and respiration intensity in an ecosystem according to claim 1, characterized in that, The power assembly includes a first mounting base (7), which is fixedly connected to the top of the housing (1). The first mounting base (7) has a wire hole (8), and a mobile power supply is detachably mounted on the first mounting base (7). The power cord of the mobile power supply passes through the wire hole (8) and is electrically connected to the fan (10).

6. The apparatus for measuring net carbon sink and respiration intensity in an ecosystem according to claim 1, characterized in that, The box (1) is made of transparent material.

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