A device for in-situ measurement and analysis of soil carbon sink capacity

Abstract

The utility model discloses a kind of in-situ determination and analysis device of soil carbon sink capacity, it is related to soil carbon sink determination technical field, including positioning plate, outer drill cylinder, inner detection rod and data acquisition analysis module.Positioning plate is fixed on soil surface, and it is equipped with avoidance hole on it;The bottom of outer drill cylinder is hinged with the sharp mouth piece of multiple petal closable, and forms drilling cone head;Inner detection rod is placed in outer drill cylinder interior, and the detection probe in its bottom is opened sharp mouth piece when lowering and inserts surrounding soil, and the in-situ detection of different soil layers is realized.Data acquisition analysis module receives and handles the signal transmitted by probe.The utility model structure is reasonable, can realize multilevel, multi-parameter soil carbon sink capacity in-situ determination under the premise of basically not destroying soil original structure, effectively improve the accuracy and systematicness of data, provide reliable tool for soil carbon sink evaluation.

Description

Technical Field

[0001] This utility model relates to the field of soil carbon sequestration technology, and more specifically to an in-situ measurement and analysis device for soil carbon sequestration capacity. Background Technology

[0002] As the largest carbon reservoir in terrestrial ecosystems, the accurate assessment of soil carbon sequestration capacity is crucial for achieving the "dual carbon" goals. Currently, methods for determining soil carbon sequestration capacity mainly rely on traditional laboratory analysis, which typically requires collecting soil samples for subsequent processing and testing. This method not only disrupts the in-situ structure of the soil but also fails to reflect the true spatiotemporal dynamics of soil carbon sequestration due to limited sampling points and insufficient temporal representativeness.

[0003] Furthermore, existing in-situ monitoring equipment has relatively limited functionality, focusing primarily on measuring individual parameters such as soil respiration rate or surface organic carbon content. It cannot simultaneously acquire multi-dimensional information such as carbon storage, carbon activity, and carbon input and output processes across different soil layers. Environmental factors such as soil temperature, humidity, pH, and texture have a significant impact on carbon sequestration capacity, but existing devices often lack the ability to coordinate the perception of these key environmental parameters, resulting in fragmented and unsystematic data.

[0004] Meanwhile, existing technologies lack the ability to simulate the in-situ impact of different management measures (such as fertilization and water regulation) on carbon sequestration in real soil environments, making it difficult to obtain dynamic response data of carbon sequestration parameters under real ecological processes. Therefore, developing a device capable of multi-parameter, multi-dimensional, in-situ coordinated acquisition of soil carbon sequestration and related environmental factor data has become crucial for improving soil carbon sequestration monitoring capabilities. Utility Model Content

[0005] In view of this, the present invention provides an in-situ measurement and analysis device for soil carbon sequestration capacity, which aims to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An in-situ measurement and analysis device for soil carbon sequestration capacity includes:

[0008] A positioning plate is placed on the soil surface to be tested, and the positioning plate is provided with multiple detection first avoidance holes. The positioning plate is fixed to the soil surface by bolts.

[0009] The outer drill cylinder is a hollow cylinder structure with a multi-lobed pointed tip hinged to the bottom. The multi-lobed pointed tip closes to form a cone structure. The outer drill cylinder passes through the first clearance hole on the positioning plate and is inserted into the soil to be tested.

[0010] An inner detection rod is placed inside the outer drill barrel and has a detection probe at its bottom. The bottom of the inner detection rod is spread open with multiple lobes of the pointed tip, so that the detection probe can be inserted into the soil.

[0011] A data acquisition and analysis module is placed outside the positioning plate and electrically connected to the data line of the detection probe. It is used to acquire and analyze the data transmitted by the detection probe.

[0012] Through the above technical solution, this utility model achieves in-situ, layered, and multi-parameter measurement of soil by means of a synergistic structure of positioning plate fixing, external drilling cylinder drilling, internal detection rod opening the tip plate and implanting the detection probe. This effectively avoids the damage to soil structure caused by traditional sampling and significantly improves the accuracy, representativeness and systematicness of carbon sink data collection.

[0013] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the nozzle is connected to the bottom end of the outer drill cylinder by a torsion spring, so that the multiple nozzles have a torque that brings them together and closes.

[0014] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the bottom of the inner detection rod has an umbrella-shaped protrusion located above the detection probe, and the umbrella-shaped protrusion is used to first open the multiple petals of the tip during the lowering of the inner detection rod.

[0015] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the outer wall of the outer drill cylinder has graduation lines.

[0016] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the top side wall of the outer drill cylinder has a vertical groove, which is engaged with the vertical groove by a rotating component and connected to the top of the outer drill cylinder. The rotating component has handles on both sides, so that rotating the rotating component can provide a downward drilling force for the outer drill cylinder.

[0017] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the outer drill cylinder is a cylindrical cylinder, the first clearance hole is a circular hole, and the diameter of the first clearance hole is larger than the outer diameter of the outer drill cylinder.

[0018] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the positioning plate is further provided with a second clearance hole, a sealing cover is fastened to the second clearance hole, a CO2 concentration sensor is installed inside the sealing cover, and the data line of the CO2 concentration sensor is electrically connected to the data acquisition and analysis module.

[0019] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, a third clearance hole is also provided on the positioning plate, and a soil texture analyzer that is in contact with the soil surface is installed in the third clearance hole, and the data cable of the soil texture analyzer is electrically connected to the data acquisition and analysis module.

[0020] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, the detection probe includes, but is not limited to, an organic carbon sensor, an inorganic carbon sensor, a soil temperature sensor, a soil moisture sensor, a soil pH sensor, and a soil electrical conductivity sensor.

[0021] Preferably, in the above-mentioned in-situ soil carbon sequestration capacity measurement and analysis device, a protective cover is fastened to the top surface of the positioning plate, and the side wall of the protective cover has a wire opening for the data cable to pass through.

[0022] As can be seen from the above technical solution, compared with the prior art, this utility model discloses an in-situ measurement and analysis device for soil carbon sequestration capacity, which has the following beneficial effects:

[0023] 1. Achieve precise in-situ measurement: By combining an expandable drill barrel with a detection rod, the probe can be directly implanted into the original soil at different depths, minimizing the damage to the soil structure during the sampling process and ensuring the authenticity and accuracy of the data.

[0024] 2. Integrated multi-parameter collaborative monitoring: The device can integrate multiple sensors such as organic / inorganic carbon, temperature, humidity, pH, conductivity, CO2 concentration and soil texture, and can synchronously and systematically acquire multi-dimensional information that affects soil carbon sequestration capacity.

[0025] 3. Easy to operate and controllable depth: The scale lines on the outer drill barrel make it easy to control the drilling depth, while the rotating part with a handle provides a labor-saving and stable drilling method, improving the convenience and efficiency of field operations.

[0026] 4. Reliable structure and protection: The automatic closing design of the nozzle plate can prevent soil from clogging the drill barrel, while the protective cover on top can protect the surface equipment and data connection, ensuring the long-term stable operation of the device in the field environment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1The attached figure is a schematic diagram of the external structure of the in-situ soil carbon sequestration capacity measurement and analysis device provided by this utility model;

[0029] Figure 2 The attached figure is a schematic diagram of the internal structure of the in-situ soil carbon sequestration capacity measurement and analysis device provided by this utility model;

[0030] Figure 3 The attached figure is a partial structural schematic diagram of the in-situ measurement and analysis device for soil carbon sequestration capacity provided by this utility model;

[0031] Figure 4 The attached figure is a schematic diagram of the combined structure of the outer drill barrel and the inner detection rod provided by this utility model;

[0032] Figure 5 The attached figure is a schematic diagram of the internal detection rod provided by this utility model;

[0033] Figure 6 The attached figure is a schematic diagram of the structure of the inner detection rod that pushes the outer drill cylinder downwards, as provided by this utility model.

[0034] Figure 7 The attached figure is a structural schematic diagram of the external drill barrel connecting rotating component provided by this utility model.

[0035] in:

[0036] 1-Positioning plate;

[0037] 11-First clearance hole; 12-Second clearance hole; 13-Third clearance hole;

[0038] 2-External drill pipe;

[0039] 21-Pointed tip; 22-Graduation line; 23-Vertical groove;

[0040] 3-Inner detection rod;

[0041] 31-Detection probe; 32-Umbrella-shaped convex edge;

[0042] 4-Data Acquisition and Analysis Module;

[0043] 5-Rotating component;

[0044] 51-Grip;

[0045] 6-Sealing cover;

[0046] 61-CO2 concentration sensor;

[0047] 7-Soil Texture Analyzer;

[0048] 8-Protective cover;

[0049] 81-Line port. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] See appendix Figure 1 To be continued Figure 5 This utility model discloses an in-situ measurement and analysis device for soil carbon sequestration capacity, comprising:

[0052] Positioning plate 1 is placed on the soil surface to be tested, and multiple detection first avoidance holes 11 are opened on the positioning plate 1. The positioning plate 1 is fixed to the soil surface by bolts.

[0053] The outer drill cylinder 2 is a hollow cylinder structure, and the bottom is hinged with a multi-lobed pointed tip 21. The multi-lobed pointed tip 21 closes to form a cone structure. The outer drill cylinder 2 passes through the first clearance hole 11 on the positioning plate 1 and is inserted into the soil to be tested.

[0054] The inner detection rod 3 is placed inside the outer drill barrel 2 and has a detection probe 31 at its bottom. The bottom of the inner detection rod 3 is spread open with a multi-lobed tip 21 so that the detection probe 31 can be inserted into the soil.

[0055] The data acquisition and analysis module 4 is located outside the positioning plate 1 and is electrically connected to the data line of the detection probe 31. It is used to acquire and analyze the data transmitted by the detection probe 31.

[0056] To further optimize the above technical solution, the tip 21 is connected to the bottom end of the outer drill barrel 2 via a torsion spring, so that multiple tip 21s have a torque that brings them together and closes.

[0057] See appendix Figure 5 and attached Figure 6 The bottom of the inner detection rod 3 has an umbrella-shaped protrusion 32 located above the detection probe 31. The umbrella-shaped protrusion 32 is used to first open the multi-lobed tip plate 21 during the lowering of the inner detection rod 3.

[0058] To further optimize the above technical solution, the outer wall of the outer drill barrel 2 has scale lines 22.

[0059] See appendix Figure 7The top side wall of the outer drill barrel 2 has a vertical slot 23, which is engaged with the vertical slot 23 by a rotating part 5 and connected to the top of the outer drill barrel 2. The rotating part 5 has handles 51 on both sides, so that rotating the rotating part 5 can provide the force for the outer drill barrel 2 to drill downward.

[0060] To further optimize the above technical solution, the outer drill barrel 2 is a cylinder, and the first clearance hole 11 is a circular hole with a diameter larger than the outer diameter of the outer drill barrel 2.

[0061] To further optimize the above technical solution, a second clearance hole 12 is also provided on the positioning plate 1. A sealing cover 6 is fastened to the second clearance hole 12. A CO2 concentration sensor 61 is installed inside the sealing cover 6. The data line of the CO2 concentration sensor 61 is electrically connected to the data acquisition and analysis module 4.

[0062] To further optimize the above technical solution, a third clearance hole 13 is also provided on the positioning plate 1. A soil texture analyzer 7 that is in contact with the soil surface is installed in the third clearance hole 13. The data cable of the soil texture analyzer 7 is electrically connected to the data acquisition and analysis module 4.

[0063] To further optimize the above technical solution, the detection probe 31 includes, but is not limited to, an organic carbon sensor, an inorganic carbon sensor, a soil temperature sensor, a soil moisture sensor, a soil pH sensor, and a soil electrical conductivity sensor.

[0064] To further optimize the above technical solution, a protective cover 8 is fastened to the top surface of the positioning plate 1, and the side wall of the protective cover 8 has a cable opening 81 for the data cable to pass through.

[0065] In this embodiment, there are multiple first clearance holes 11 and external drill barrels 2. Different sensors can be selected according to requirements, and different insertion depths can be achieved as needed.

[0066] The soil carbon sequestration capacity in-situ measurement and analysis device provided in this embodiment of the invention is based on a technical approach combining multi-parameter collaborative acquisition and in-situ non-destructive testing. Through positioning plate fixation, layered drilling, probe implantation, and data integration and analysis, it achieves efficient and accurate measurement of soil carbon sequestration capacity and related environmental factors. The specific usage method is as follows:

[0067] Device Installation and Positioning: Place the positioning plate 1 flat on the surface of the soil to be measured and secure it firmly with bolts to ensure the device remains stable during measurement. The positioning plate 1 has multiple first clearance holes 11 to guide the outer drill cylinder 2 to be inserted vertically into the soil at different positions or depths. To facilitate soil removal during drilling, the diameter of the first clearance holes 11 can be made larger.

[0068] Drilling and Soil Penetration: The outer drill barrel 2 is passed through the first clearance hole 11. Its bottom multi-lobed tip 21 remains closed under the action of a torsion spring, forming a conical structure that facilitates soil penetration. The operator can apply downward rotational pressure via the handle 51 of the rotating component 5, causing the outer drill barrel 2 to drill downwards along the vertical slot 23. The scale lines 22 on the outer wall of the outer drill barrel 2 can display the drilling depth in real time, facilitating control of the sampling layer.

[0069] The detection probe is implanted into contact with the soil: After the outer drill barrel 2 reaches the predetermined depth, the inner detection rod 3 is lowered from inside the outer drill barrel 2. During the lowering process, the umbrella-shaped protrusion 32 at the bottom of the inner detection rod 3 first contacts and expands the multi-lobed tip 21, exposing the detection probe 31 and allowing it to be directly inserted into the surrounding soil, achieving close contact with the in-situ soil. The detection probe 31 can be an organic carbon sensor, an inorganic carbon sensor, a soil temperature sensor, a soil moisture sensor, a soil pH sensor, or a soil conductivity sensor, etc. The data is transmitted via a data cable to the data acquisition and analysis module 4 located outside the positioning plate 1 for real-time processing and analysis.

[0070] Auxiliary sensors work in conjunction: A sealing cover 6 is installed at the second clearance hole 12, with a built-in CO2 concentration sensor 61, which is used to monitor the CO2 concentration in the soil surface or at a specific depth and to assess the soil respiration intensity; a soil texture analyzer 7 is placed at the third clearance hole 13, which directly contacts the soil surface to obtain soil particle composition and texture information; the data lines of the above sensors are all connected to the data acquisition and analysis module 4 to realize multi-source data fusion analysis.

[0071] Protection and Data Output: A protective cover 8 is attached to the top of the positioning plate 1, and its side wall has a cable port 81 to protect the internal structure and data cable. After all collected data is integrated by the data acquisition and analysis module 4, it can be output as a multi-dimensional carbon sequestration capacity assessment report to support subsequent scientific research or management decisions.

[0072] This invention achieves in-situ, multi-dimensional, and dynamic monitoring of soil carbon sequestration capacity through a single deployment and multi-point, multi-layer measurement method. It avoids the damage to soil structure caused by traditional sampling and improves the spatiotemporal representativeness of the data and the reliability of the system.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An in-situ measurement and analysis device for soil carbon sequestration capacity, characterized in that, include: Positioning plate (1), the positioning plate (1) is placed on the soil surface to be tested, and the positioning plate (1) is provided with a plurality of detection first avoidance holes (11), the positioning plate (1) is fixed on the soil surface by bolts; The outer drill cylinder (2) is a hollow cylinder structure, and a multi-lobed pointed tip (21) is hinged at the bottom. The multi-lobed pointed tip (21) closes to form a cone structure. The outer drill cylinder (2) passes through the first clearance hole (11) on the positioning plate (1) and is inserted into the soil to be tested. The inner detection rod (3) is placed inside the outer drill barrel (2) and has a detection probe (31) at the bottom. The bottom of the inner detection rod (3) is spread open with multiple petals of the tip plate (21) so that the detection probe (31) can be inserted into the soil. The data acquisition and analysis module (4) is placed outside the positioning plate (1) and electrically connected to the data line of the detection probe (31) for acquiring and analyzing the data transmitted by the detection probe (31).

2. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The pointed blade (21) is connected to the bottom end of the outer drill barrel (2) via a torsion spring, so that the multiple pointed blades (21) have a torque that brings them together and closes.

3. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The bottom of the inner detection rod (3) has an umbrella-shaped protrusion (32) located above the detection probe (31), which is used to first open the multi-lobed tip plate (21) during the lowering of the inner detection rod (3).

4. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The outer wall of the outer drill barrel (2) has scale lines (22).

5. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The top sidewall of the outer drill barrel (2) has a vertical slot (23), which is engaged with the vertical slot (23) by a rotating member (5) and connected to the top of the outer drill barrel (2). The rotating member (5) has handles (51) on both sides, so that the force of the outer drill barrel (2) to drill downward can be provided by rotating the rotating member (5).

6. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 5, characterized in that, The outer drill tube (2) is a cylinder, and the first clearance hole (11) is a circular hole with a diameter larger than the outer diameter of the outer drill tube (2).

7. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The positioning plate (1) is also provided with a second clearance hole (12), and a sealing cover (6) is fastened on the second clearance hole (12). A CO2 concentration sensor (61) is installed inside the sealing cover (6), and the data line of the CO2 concentration sensor (61) is electrically connected to the data acquisition and analysis module (4).

8. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The positioning plate (1) is also provided with a third clearance hole (13), and a soil texture analyzer (7) that is in contact with the soil surface is installed in the third clearance hole (13). The data line of the soil texture analyzer (7) is electrically connected to the data acquisition and analysis module (4).

9. The in-situ measurement and analysis device for soil carbon sequestration capacity according to claim 1, characterized in that, The detection probe (31) includes, but is not limited to, an organic carbon sensor, an inorganic carbon sensor, a soil temperature sensor, a soil moisture sensor, a soil pH sensor, and a soil electrical conductivity sensor.

10. An in-situ measurement and analysis device for soil carbon sequestration capacity according to any one of claims 1-9, characterized in that, The top surface of the positioning plate (1) is fitted with a protective cover (8), and the side wall of the protective cover (8) has a wire opening (81) for the data cable to pass through.

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