A wetland ecosystem in-situ carbon sink monitoring and metering integrated device

Abstract

This invention discloses an integrated device for in-situ carbon sink monitoring and measurement in wetland ecosystems, relating to the field of carbon sink measurement technology. It includes an integrated mounting frame, a horizontal mounting plate that slides up and down along the vertical section of the integrated mounting frame, and a carbon sink monitoring and measurement module mounted on the horizontal mounting plate. The carbon sink monitoring and measurement module comprises several detection mounting cylinders, a carbon dioxide sensor, a gas turbulence mechanism, a multi-parameter sensor, and a methane sensor. The horizontal mounting plate also houses a central control unit with a built-in carbon sink flux conversion module. The gas turbulence mechanism ensures uniform and stable airflow during detection, reduces external interference, and improves the accuracy of monitoring carbon sink-related gas concentrations. Furthermore, the central control unit enables multi-sensor collaborative operation and carbon sink flux conversion without the need for additional supporting equipment, significantly improving monitoring efficiency and data processing convenience, and providing accurate and efficient technical support for wetland carbon sink assessment.

Description

Technical Field

[0001] This invention relates to the field of carbon sequestration technology, specifically to an integrated device for in-situ carbon sequestration monitoring and measurement in wetland ecosystems. Background Technology

[0002] Wetlands are important carbon sinks in terrestrial ecosystems, with outstanding carbon sequestration and storage capabilities. Coastal salt marshes, mangroves, and freshwater swamps, in particular, have a much higher carbon sequestration per unit area than most terrestrial ecosystems. Accurately measuring the carbon sequestration capacity of wetlands is a core prerequisite for quantifying ecological value, promoting carbon trading, and carrying out ecological protection. With the increasing emphasis placed on building ecosystem carbon sequestration capacity by the state, the demand for accuracy, comprehensiveness, and convenience in wetland carbon sequestration monitoring and measurement is growing, necessitating reliable technical means to provide data support for establishing wetland carbon ledgers.

[0003] Currently, the two main methods for monitoring carbon sinks in wetland ecosystems are the eddy covariance flux tower method and the box method. While the eddy covariance flux tower method can achieve high temporal resolution carbon flux monitoring, its construction and subsequent management costs are high, making it difficult to widely apply in large wetland areas. The box method is lower in cost and relatively simple to operate, making it the most widely used in-situ monitoring method. However, existing box monitoring equipment has many shortcomings and cannot meet the needs of accurate monitoring.

[0004] Existing wetland carbon sequestration monitoring equipment generally suffers from low integration. Most devices can only monitor carbon dioxide flux alone, failing to simultaneously monitor the emission fluxes of other major carbon source gases such as methane. Since methane is a significant greenhouse gas, neglecting its emission flux can lead to systematic biases in carbon sequestration calculations, affecting the accuracy of carbon sequestration assessments. Furthermore, existing equipment often requires multiple auxiliary monitoring instruments to obtain environmental parameters such as temperature and humidity. This cumbersome setup and complex operation, coupled with the difficulty in coordinating data from different instruments, increases the difficulty and error in carbon sequestration flux conversion. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an integrated in-situ carbon sequestration monitoring and measurement device for wetland ecosystems that features high integration, accurate monitoring, strong stability, wide adaptability, and the ability to achieve multi-parameter collaborative monitoring.

[0006] This invention discloses an integrated device for in-situ carbon sequestration monitoring and measurement in wetland ecosystems, comprising an integrated mounting frame, a horizontal mounting plate that can slide up and down along the vertical section of the integrated mounting frame, and a carbon sequestration monitoring and measurement module disposed on the horizontal mounting plate; The horizontal mounting plate has several first through mounting ports; The carbon sink monitoring and metering module includes several detection installation cylinders that are movably installed in each first through installation port and have an exhaust valve at the top, a carbon dioxide sensor, a gas turbulence mechanism, a multi-parameter sensor and a methane sensor located at the top inside the detection installation cylinder, and a central control unit located on a horizontal mounting plate and having a built-in carbon sink flux conversion module. The gas turbulence mechanism includes a turbulence mesh cover with an open bottom structure inside the detection mounting cylinder, a pass plate located at the upper end of the turbulence mesh cover and having several airflow channels inside, and several diversion pipes located at the upper and lower ends of the pass plate and connected to the inner wall of the detection mounting cylinder; each diversion pipe is equipped with a one-way solenoid valve. The central control unit is electrically connected to the carbon dioxide sensor, multi-parameter sensor, methane sensor, and one-way solenoid valve.

[0007] Furthermore, the bottom of the integrated mounting frame is provided with a linkage plate that can be driven by a hydraulic cylinder and can slide up and down along the integrated mounting frame. The linkage plate is provided with a second through mounting port at the lower end of each first through mounting port. The first through mounting port and the second through mounting port are connected by a folding sealing cover.

[0008] Description: The height of the linkage plate is adjusted by extending and retracting the hydraulic cylinder, thereby adjusting the distance from the ground to the bottom of the detection mounting cylinder, adapting to carbon sequestration monitoring scenarios at different heights. The folding sealing cover can achieve a sealed connection between the first and second through mounting ports, preventing external airflow, dust, rainwater, etc. from entering the inside of the detection mounting cylinder and avoiding interference with the sensor's detection accuracy. At the same time, the folding structure can be adapted to the up and down movement of the linkage plate driven by the hydraulic cylinder, without affecting the equipment's adjustment flexibility.

[0009] Furthermore, a sealing snap ring is provided at the bottom of the second through-hole, and an inflatable sealing ring is provided on the inner wall of the sealing snap ring.

[0010] Note: The sealing ring is used to assist in positioning the bottom of the detection mounting cylinder. The inflatable sealing ring, after being inflated, can tightly fit the gap between the sealing ring and the ground, further enhancing the sealing performance, preventing external airflow and moisture from entering the detection channel, and ensuring the detection accuracy of each sensor.

[0011] Furthermore, mounting webs are hinged to each side wall of the linkage plate, a first linkage cover is fixedly installed on the top of the integrated mounting frame, a second linkage cover is slidably installed on the outer wall of the integrated mounting frame, the second linkage cover is connected to the upper end of each mounting web via a telescopic auxiliary connecting rod, and the second linkage cover is connected to the first linkage cover via an electric telescopic rod.

[0012] Explanation: The mounting webs serve as auxiliary fixing components for the equipment. The second linkage cover can slide up and down along the integrated mounting frame via the extension and retraction of the electric telescopic rod. In turn, the auxiliary connecting rod drives the mounting webs to unfold or retract around the hinge point. When unfolded, the contact area between the linkage plate and the ground is increased, improving the stability of the equipment in complex terrains such as slopes and soft soil areas, preventing tipping or getting stuck in mud. When retracted, it facilitates the transportation and storage of the equipment, reducing the difficulty of handling.

[0013] Furthermore, each mounting plate has several conical mud-inserting teeth at its bottom end.

[0014] Note: The conical mud-inserting teeth can be inserted into the ground soil after the web plate is unfolded, further enhancing the fixation effect of the equipment, and are especially suitable for easily slippery terrains such as soft soil, wetlands, and slopes.

[0015] Furthermore, the inner wall of the testing installation cylinder is provided with an anti-corrosion coating, which is a polytetrafluoroethylene coating with a thickness of 0.2-0.4 mm.

[0016] Note: The testing and installation cylinder is exposed to outdoor environments for extended periods and is susceptible to corrosion from soil, moisture, acids, and alkalis. The PTFE coating effectively isolates the cylinder from corrosive media, ensuring its service life. A thickness of 0.2-0.4mm provides corrosion protection without increasing the cylinder's weight.

[0017] Furthermore, each first through-mounting port has an annular snap ring at its bottom end, the inner wall of the first through-mounting port has several vertical sliding grooves along the circumference, the outer wall of the detection mounting cylinder has vertical sliding strips corresponding to the vertical sliding grooves, the annular snap ring has several adsorption recesses along the circumference, and the bottom end of the detection mounting cylinder has several negative pressure suction cups corresponding to each adsorption recess.

[0018] Description: The vertical sliding groove and the vertical sliding strip work together to enable the detection mounting cylinder to slide precisely vertically within the first through-hole. The annular retaining ring is used to limit the detection mounting cylinder and prevent it from sliding down excessively. The negative pressure suction cup works with the adsorption recess to form a negative pressure adsorption fixation after the detection mounting cylinder is installed in place, which enhances the connection stability between the detection mounting cylinder and the first through-hole and facilitates disassembly, making it convenient to maintain and calibrate the sensor inside the detection mounting cylinder.

[0019] Furthermore, the several testing installation cylinders are composed of an equal number of light-transmitting open boxes and opaque dark boxes, with each open box and each dark box arranged alternately, and each open box and each dark box is equipped with a gas turbulence mechanism.

[0020] Explanation: The alternating arrangement of open and dark boxes allows for comparative monitoring. The open boxes, being transparent, simulate the carbon sink environment under natural light conditions, monitoring the carbon dioxide and methane fluxes produced by vegetation photosynthesis and soil respiration under light. The dark boxes, being opaque, block photosynthesis, monitoring only the gas fluxes produced by soil respiration and microbial activity. By comparing the data from both, the amount of carbon absorbed by vegetation photosynthesis can be accurately calculated, improving the accuracy of carbon sink monitoring. Both boxes are equipped with gas turbulence mechanisms to ensure uniform gas distribution within the boxes, avoiding detection errors caused by uneven local gas concentrations and ensuring consistency of the comparative monitoring data.

[0021] Furthermore, the exposed box is made of high-transmittance tempered glass, the outer wall of the dark box has a black anti-corrosion coating, and the inner wall of the dark box has an insulation layer.

[0022] Note: The light box uses high-transmittance tempered glass to maximize the penetration of natural light and simulate the lighting conditions in the natural environment. The black anti-corrosion coating on the outer wall of the dark box can effectively block light penetration, ensuring that the inside of the dark box is in a dark environment, and also plays a role in corrosion prevention, ensuring the service life of the dark box.

[0023] The beneficial effects of this invention are: The wetland ecosystem in-situ carbon sequestration monitoring and measurement integrated device of the present invention integrates a carbon dioxide sensor, a methane sensor, a multi-parameter sensor and a central control unit. It can simultaneously monitor the flux of carbon dioxide and methane, the two main carbon source gases in the wetland ecosystem. Combined with the environmental parameters obtained by the multi-parameter sensor, the carbon sequestration flux conversion module built into the central control unit can realize the accurate calculation of carbon sequestration. It does not require additional monitoring equipment, has a high degree of integration and comprehensive functions, and can realize multi-parameter collaborative monitoring, solving the problem of single function of existing equipment. Among them, the gas turbulence mechanism can make the gas in the detection installation cylinder uniformly distributed, prevent detection errors caused by uneven local gas concentration, improve the accuracy of carbon sequestration monitoring and measurement, and provide reliable data support for carbon sequestration assessment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom view of the mounting web plate of the present invention installed on the outer wall of the linkage plate; Figure 3 This is a schematic diagram of the structure of the detection mounting cylinder of the present invention when it is installed on a horizontal mounting plate; Figure 4 This is the invention Figure 3 Enlarged view of point A in the image; Figure 5 This is a cross-sectional view of the detection mounting cylinder of the present invention when it is installed on a horizontal mounting plate; Figure 6 This is a top view of the distribution of the diverter tube of the present invention on the outer wall of the mounting cylinder during detection.

[0025] Among them, 1-integrated mounting bracket, 11-mounting web plate, 12-first linkage cover, 120-auxiliary connecting support rod, 13-second linkage cover, 14-electric telescopic rod, 15-conical mud insertion tooth, 2-horizontal mounting plate, 20-first through mounting port, 21-linkage plate, 210-hydraulic cylinder, 211-folding sealing cover, 22-second through mounting port, 220-sealing snap ring, 221-sealing ring, 23-ring snap ring, 230-adsorption notch, 24-vertical sliding 3-Carbon sink monitoring and metering module, 30-Detection and installation cylinder, 300-Open box, 301-Dark box, 302-Vertical sliding bar, 303-Negative pressure suction cup, 304-Anti-corrosion coating, 31-Carbon dioxide sensor, 32-Gas turbulence mechanism, 320-Turbulence mesh cover, 321-Pass plate, 322-Diverter pipe, 323-One-way solenoid valve, 33-Multi-parameter sensor, 34-Methane sensor, 340-Airflow channel, 35-Central control unit, 4-Exhaust valve. Detailed Implementation

[0026] Example 1: As Figure 1 As shown, an integrated device for in-situ carbon sequestration monitoring and measurement in wetland ecosystems includes an integrated mounting frame 1, a horizontal mounting plate 2 that can slide up and down along the vertical section of the integrated mounting frame 1, and a carbon sequestration monitoring and measurement module 3 mounted on the horizontal mounting plate 2. The horizontal mounting plate 2 is provided with 12 first through mounting holes 20; The carbon sink monitoring and metering module 3 includes 12 detection mounting cylinders 30 that are movably installed in each first through mounting port 20 and have an exhaust valve 4 at the top; a carbon dioxide sensor 31, a gas turbulence mechanism 32, a multi-parameter sensor 33, and a methane sensor 34 located at the top inside the detection mounting cylinder 30; and a central control unit 35 located on a horizontal mounting plate 2 and having a built-in carbon sink flux conversion module. The exhaust valve 4, carbon dioxide sensor 31, multi-parameter sensor 33, methane sensor 34, and central control unit 35 all adopt existing technologies. For example, the exhaust valve 4 can be a ZSFP-16P DN15 stainless steel automatic exhaust valve, the carbon dioxide sensor 31 can be a Vaisala GMP343 carbon dioxide sensor, the methane sensor 34 can be a LI-CORLI-7700 open-circuit methane analyzer, the multi-parameter sensor 33 can be an XF103 outdoor protective temperature, humidity, and pressure sensor, and the central control unit 35 can be an STM32H743ZI type central control unit. like Figure 5 , 6As shown, the gas turbulence mechanism 32 includes a turbulence mesh cover 320 with an open bottom structure disposed inside the detection mounting cylinder 30, a through plate 321 located at the upper end of the turbulence mesh cover 320 and having 36 airflow channels 340 inside, and eight diversion pipes 322 located at the upper and lower ends of the through plate 321 respectively and connected to the inner wall of the detection mounting cylinder 30; each diversion pipe 322 is provided with a one-way solenoid valve 323, wherein the one-way solenoid valve 323 adopts existing technology, for example, a 2W025-08-PTFE type one-way solenoid valve can be used; The central control unit 35 is electrically connected to the carbon dioxide sensor 31, the multi-parameter sensor 33, the methane sensor 34, and the one-way solenoid valve 323, respectively. The bottom of the integrated mounting frame 1 is provided with a linkage plate 21 that can be driven by a hydraulic cylinder 210 and can slide up and down along the integrated mounting frame 1. The linkage plate 21 is provided with a second through mounting port 22 corresponding to the lower end of each first through mounting port 20. The first through mounting port 20 and the second through mounting port 22 are connected by a folding sealing cover 211. The height of the linkage plate 21 is adjusted by the extension and retraction of the hydraulic cylinder 210, thereby adjusting the distance from the ground of the bottom end of the detection mounting cylinder 30 to adapt to carbon sink monitoring scenarios at different heights. The folding sealing cover 211 can achieve a sealed connection between the first through mounting port 20 and the second through mounting port 22, preventing external irrelevant airflow, dust, rainwater, etc. from entering the interior of the detection mounting cylinder 30 and avoiding interference with the detection accuracy of the sensor. At the same time, the folding structure can be adapted to the up and down movement of the linkage plate 21 driven by the hydraulic cylinder 210 without affecting the adjustment flexibility of the equipment. The hydraulic cylinder 210 adopts existing technology, such as the Morgan Intelligent MHC-02 micro DC hydraulic drive unit. The bottom of the second through-hole 22 is provided with a sealing snap ring 220. The inner wall of the sealing snap ring 220 is provided with an inflatable sealing ring 221. The sealing snap ring 220 is used to assist in positioning the bottom of the detection installation cylinder 30. After the inflatable sealing ring 221 is inflated, it can tightly fit the gap between the sealing snap ring 220 and the ground, further enhancing the sealing performance, preventing external airflow and moisture from entering the detection channel, and ensuring the detection accuracy of each sensor. The sealing ring 221 can adopt existing technology, such as Aixin Rubber & Plastic AX-QM-Φ100×Φ80×6 type silicone inflatable sealing ring. The inner wall of the detection installation cylinder 30 is provided with an anti-corrosion coating 304, which is a polytetrafluoroethylene coating with a thickness of 0.2mm. The detection installation cylinder 30 is in the field for a long time and is susceptible to corrosion from corrosive substances in the soil, water vapor in the air, acid and alkali substances, etc. The polytetrafluoroethylene coating can effectively isolate corrosive media and ensure the service life of the detection installation cylinder 30. The thickness of 0.2mm can ensure the anti-corrosion effect without increasing the weight of the detection installation cylinder 30.

[0027] Example 2: The difference between this example and Example 1 is that the anti-corrosion coating 304 is a polytetrafluoroethylene coating with a thickness of 0.4 mm.

[0028] Example 3: This example differs from Example 1 in that, as Figure 1 As shown, the 12 detection installation cylinders 30 consist of an equal number of light-transmitting open boxes 300 and opaque dark boxes 301. The open boxes 300 and dark boxes 301 are arranged alternately, and each open box 300 and dark box 301 is equipped with a gas turbulence mechanism 32. The alternating arrangement of the open and dark boxes 300 allows for comparative monitoring. The light-transmitting open boxes 300 simulate the carbon sink environment under natural light conditions, monitoring the carbon dioxide and methane fluxes produced by vegetation photosynthesis and soil respiration under light. The opaque dark boxes 301 block photosynthesis, monitoring only the gas fluxes produced by soil respiration and microbial activity. By comparing the detection data from both, the amount of carbon absorbed by vegetation photosynthesis can be accurately calculated, improving the accuracy of carbon sink monitoring. The gas turbulence mechanism 32 in both boxes ensures uniform gas distribution within the chamber, avoiding detection errors caused by uneven local gas concentrations and guaranteeing the consistency of the comparative monitoring data. This device achieves accurate measurement of wetland carbon sequestration by combining comparative monitoring of open box 300 and dark box 301 with multi-parameter environmental correction. The central control unit 35 calls the built-in carbon sequestration flux conversion module to perform the following three steps of calculation and evaluation: 1. Calculation of basic gas flux First, using the ideal gas law, the concentration change rates collected by the carbon dioxide sensor 31, the multi-parameter sensor 33, and the methane sensor 34 are converted into standard flux. The central control unit 35 then calculates the chamber temperature (measured by the multi-parameter sensor) based on the temperature inside the chamber. ) and air pressure ( ), combined with the effective volume of open box 300 or closed box 301 ( ) and base area ( Calculate the carbon dioxide and methane fluxes in the open and dark boxes respectively. The specific calculation formula is as follows: in, The rate of change of gas concentration over time in either the open-circuit 300 or the dark-circuit 301 is measured by the carbon dioxide sensor 31 and the methane sensor 34. The ideal gas constant is approximately 8.314 J·mol⁻¹. -1 ·K -1 ; 2. Net ecosystem carbon exchange separation To eliminate interference from soil respiration and accurately obtain the amount of carbon sequestration by vegetation photosynthesis, the net ecosystem carbon exchange was calculated using the difference between the open-cell 300 and the dark-cell 301. ): in, This is the carbon dioxide flux measured inside the 300-cell test chamber. The carbon dioxide flux measured inside dark box 301, if A negative value indicates that the wetland ecosystem acts as a carbon sink (absorbing carbon dioxide); a positive value indicates that it acts as a carbon source. 3. Comprehensive carbon sink assessment Given that wetlands are a significant source of methane emissions, the system will ultimately incorporate methane flux into the assessment, calculating it in carbon dioxide equivalent (CO2). The overall greenhouse effect balance is represented by: Comprehensive carbon sequestration in, This is the methane flux measured by methane sensor 34. It is the global warming potential coefficient for methane; Through the above calculations, the device can not only monitor the emission or absorption of a single gas in real time, but also accurately quantify the carbon sequestration contribution of vegetation through the light-dark box differential method, and conduct a comprehensive assessment in conjunction with methane emissions, thereby providing scientific and reliable data support for wetland carbon sink trading and ecological value accounting.

[0029] The exposed box 300 is made of high-transmittance tempered glass, while the outer wall of the dark box 301 is coated with a black anti-corrosion coating. The inner wall of the dark box 301 is equipped with an insulation layer. The exposed box 300 uses high-transmittance tempered glass to maximize the penetration of natural light and simulate the lighting conditions in the natural environment. The black anti-corrosion coating on the outer wall of the dark box 301 can effectively block light penetration, ensuring that the inside of the dark box 301 is in a dark environment, and also plays a role in corrosion prevention, ensuring the service life of the dark box 301. The black anti-corrosion coating is an existing black epoxy zinc-rich anti-corrosion coating.

[0030] Example 4: This example differs from Example 3 in that, as... Figure 2As shown, each side wall of the linkage plate 21 is hinged with a mounting web plate 11. The top of the integrated mounting frame 1 is fixedly mounted with a first linkage cover 12. The outer wall of the integrated mounting frame 1 is slidably mounted with a second linkage cover 13. The second linkage cover 13 is connected to the upper end of each mounting web plate 11 through a telescopic auxiliary connecting rod 120. The second linkage cover 13 and the first linkage cover 12 are connected through an electric telescopic rod 14. The mounting web plate 11 serves as an auxiliary fixing component of the equipment. The second linkage cover 13 can be driven to slide up and down along the integrated mounting frame 1 by the telescopic movement of the electric telescopic rod 14. Then, the mounting web plate 11 can be extended or retracted around the hinge point through the auxiliary connecting rod 120. When extended, the contact area between the linkage plate 21 and the ground can be increased, improving the stability of the equipment in complex terrain such as slopes and soft soil areas, and preventing tipping or mud sinking. When retracted, it facilitates the transportation and storage of the equipment and reduces the difficulty of handling. The electric telescopic rod 14 adopts existing technology, such as the KM03-24V-50mm-500N type electric telescopic rod. Each mounting web plate 11 has 80 conical mud-inserting teeth 15 at its bottom end. The conical mud-inserting teeth 15 can be inserted into the ground soil after the mounting web plate 11 is unfolded, further enhancing the fixing effect of the equipment. It is especially suitable for easily slippery terrains such as soft soil, wetlands, and slopes.

[0031] Example 5: This example differs from Example 4 in that, as Figure 3 , 4 As shown, each first through-hole mounting port 20 has an annular retaining ring 23 at its bottom. The inner wall of the first through-hole mounting port 20 has four vertical sliding grooves 24 along its circumference. The outer wall of the detection mounting cylinder 30 has vertical sliding strips 302 corresponding to the vertical sliding grooves 24. The annular retaining ring 23 has eight adsorption recesses 230 along its circumference. The bottom of the detection mounting cylinder 30 has eight negative pressure suction cups 303 corresponding to each adsorption recess 230. The vertical sliding grooves 24 and vertical sliding strips 302 cooperate with each other to achieve the detection mounting cylinder 30 in the first through-hole mounting port 20... The precise vertical sliding within the through-mounting port 20, and the annular retaining ring 23 are used to limit the detection mounting cylinder 30 to prevent it from sliding down excessively; the negative pressure suction cup 303 cooperates with the adsorption recess 230 to form a negative pressure adsorption fixation after the detection mounting cylinder 30 is installed in place, which enhances the connection stability between the detection mounting cylinder 30 and the first through-mounting port 20, and at the same time facilitates disassembly, making it convenient to maintain and calibrate the sensor inside the detection mounting cylinder 30. The negative pressure suction cup 303 adopts existing technology, such as the PZP standard series negative pressure suction cup.

[0032] The working process of the integrated wetland ecosystem in-situ carbon sequestration monitoring and measurement device in this embodiment is as follows: S1. Fix the integrated mounting frame 1 to the original position of the wetland monitoring, start the electric telescopic rod 14, drive the second linkage cover 13 to slide down along the integrated mounting frame 1, and drive the mounting web plate 11 to unfold around the hinge point of the linkage plate 21 through the auxiliary connecting support rod 120, so that the conical mud insertion teeth 15 at the bottom of the mounting web plate 11 are inserted into the wetland soil. Then, start the hydraulic cylinder 210 to adjust the linkage plate 21 to fit with the ground. At the same time, the sealing ring 221 seals the gap between the sealing snap ring 220 and the ground. S2. The central control unit 35 issues a command to control the one-way solenoid valve 323 to open. The air in the wetland enters through the bottom opening of the detection installation cylinder 30, passes through the initial turbulence of the turbulence mesh cover 320, is diverted through the airflow channel 340 of the plate 321, and then achieves airflow circulation at the upper and lower ends through the diversion pipe 322, so that the gas in the detection installation cylinder 30 is evenly distributed. S3. The central control unit 35 controls the one-way solenoid valve 323 to close, so that the detection mounting cylinder 30 is in a sealed state, and the carbon dioxide sensor 31, multi-parameter sensor 33 and methane sensor 34 are started to start synchronous detection. The specific detection process is as follows: S3-1, Carbon dioxide sensor 31 detects carbon dioxide concentration data in open box 300 and dark box 301 in real time, records concentration data every 10 seconds, and continuously detects for 30 minutes to form a carbon dioxide concentration change curve. S3-2, methane sensor 34 synchronously detects the concentration of methane in bright box 300 and dark box 301. The detection frequency is consistent with that of carbon dioxide sensor 31. It records the methane concentration change data and forms a methane concentration change curve. S3-3, the multi-parameter sensor 33 synchronously detects the temperature, humidity and air pressure parameters in the open box 300 and the dark box 301, records them in real time and transmits them to the central control unit 35, providing environmental correction parameters for subsequent carbon sink flux measurement; S3-4. During the testing process, if the gas pressure in the open box 300 and the dark box 301 is too high, the central control unit 35 will automatically control the exhaust valve 4 to open and release the pressure, and close it immediately after the pressure is released. S4. The central control unit 35 calls the built-in carbon sink flux conversion module to accurately measure the carbon sink absorption based on the detection of carbon dioxide sensor 31, multi-parameter sensor 33 and methane sensor 34. S5. Repeat steps S2-S4 above according to a preset cycle of once a week to achieve long-term continuous monitoring of in-situ carbon sinks in wetland ecosystems.

Claims

1. An integrated device for in-situ carbon sequestration monitoring and measurement in wetland ecosystems, characterized in that, It includes an integrated mounting frame (1), a horizontal mounting plate (2) that can slide up and down along the vertical section of the integrated mounting frame (1), and a carbon sink monitoring and metering module (3) disposed on the horizontal mounting plate (2). The horizontal mounting plate (2) is provided with several first through mounting ports (20); The carbon sink monitoring and metering module (3) includes several detection installation cylinders (30) that are movably installed in each of the first through installation ports (20) and have an exhaust valve (4) at the top, a carbon dioxide sensor (31), a gas turbulence mechanism (32), a multi-parameter sensor (33), and a methane sensor (34) located at the top inside the detection installation cylinder (30), and a central control unit (35) that is located on the horizontal installation plate (2) and has a built-in carbon sink flux conversion module. The gas turbulence mechanism (32) includes a turbulence mesh cover (320) located inside the detection mounting cylinder (30) and having an open bottom, a through plate (321) located at the upper end of the turbulence mesh cover (320) and having several airflow channels (340) inside, and several diversion pipes (322) located at the upper and lower ends of the through plate (321) and communicating with the inner wall of the detection mounting cylinder (30); each diversion pipe (322) is provided with a one-way solenoid valve (323); The central control unit (35) is electrically connected to the carbon dioxide sensor (31), the multi-parameter sensor (33), the methane sensor (34), and the one-way solenoid valve (323), respectively.

2. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 1, characterized in that, The bottom end of the integrated mounting frame (1) is provided with a linkage plate (21) that can be driven by a hydraulic cylinder (210) and can slide up and down along the integrated mounting frame (1). The linkage plate (21) is provided with a second through mounting port (22) at the lower end of each of the first through mounting ports (20). The first through mounting ports (20) and the second through mounting ports (22) are connected by a folding sealing cover (211).

3. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 2, characterized in that, The bottom end of the second through-hole (22) is provided with a sealing snap ring (220), and the inner wall of the sealing snap ring (220) is provided with an inflatable sealing ring (221).

4. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 2, characterized in that, Each side wall of the linkage plate (21) is hinged with a mounting web plate (11), the top of the integrated mounting frame (1) is fixedly mounted with a first linkage cover (12), and the outer wall of the integrated mounting frame (1) is slidably mounted with a second linkage cover (13). The second linkage cover (13) is connected to the upper end of each mounting web plate (11) through a telescopic auxiliary connecting rod (120), and the second linkage cover (13) is connected to the first linkage cover (12) through an electric telescopic rod (14).

5. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 4, characterized in that, Each of the aforementioned mounting web plates (11) has several conical mud-inserting teeth (15) at its bottom end.

6. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 1, characterized in that, The inner wall of the detection installation cylinder (30) is provided with an anti-corrosion coating (304), which is a polytetrafluoroethylene coating with a thickness of 0.2-0.4 mm.

7. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 1, characterized in that, Each of the first through-hole (20) is provided with an annular snap ring (23) at the bottom. The inner wall of the first through-hole (20) is provided with several vertical sliding grooves (24) along the circumferential direction. The outer wall of the detection mounting cylinder (30) is provided with vertical sliding strips (302) that correspond one-to-one with the vertical sliding grooves (24). The annular snap ring (23) is provided with several adsorption recesses (230) along the circumferential direction. The bottom of the detection mounting cylinder (30) is provided with several negative pressure suction cups (303) that correspond one-to-one with each of the adsorption recesses (230).

8. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 1, characterized in that, The detection installation cylinders (30) are composed of an equal number of light-transmitting open boxes (300) and opaque dark boxes (301). The open boxes (300) and the dark boxes (301) are arranged alternately, and each open box (300) and each dark box (301) is provided with a gas turbulence mechanism (32).

9. The integrated monitoring and measurement device for in-situ carbon sequestration in wetland ecosystems as described in claim 8, characterized in that, The material of the open box (300) is high-transmittance tempered glass, the outer wall of the dark box (301) is provided with a black anti-corrosion coating, and the inner wall of the dark box (301) is provided with a heat insulation layer.

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