Observation device for gas exchange flux

Abstract

The utility model discloses an observation device for gas exchange flux. The device comprises a base, a bottom box, a middle box, an upper box and a limiting assembly are arranged at the upper end of the base, the bottom box and the middle box are box bodies without bottoms, the upper box is a box body with a top, a connecting mechanism is arranged between the bottom box and the middle box and between the middle box and the upper box, an air pressure balance opening is formed in the upper end of the upper box, and the limiting assembly is arranged on the upper end of the upper box. An air pressure balance opening is formed in the right end of the middle box, a thin pipe is fixedly connected to the upper end of the upper box, an injector is installed at the other end of the thin pipe, a thermometer is installed at the right end of the upper box, and a fan is installed on the inner wall of the middle box; the method solves the problem that a means for monitoring greenhouse gases discharged by vegetation lacks synchronous observation of long-term in-situ multiple gases for observing greenhouse gas discharge according to vegetation growth and synchronous observation of greenhouse gas discharge flux under different vegetation types of a wetland.

Description

Technical Field

[0001] The utility model relates to the technical field of observation devices, in particular to an observation device for gas exchange flux. Background Art

[0002] Wetlands are sources and sinks of multiple greenhouse gases and play an important role in stabilizing global climate change. It is necessary to conduct in situ observations of greenhouse gases emitted by different vegetation in wetlands. However, current monitoring methods lack the ability to conduct long-term in situ synchronous observations of multiple gases based on vegetation growth to observe greenhouse gas emissions, and to conduct synchronous observations of greenhouse gas emission fluxes under different vegetation types in wetlands. Therefore, it is necessary to develop a gas exchange flux observation device to provide a reference for estimating the total amount of greenhouse gas emissions from wetlands in my country and for future research, management and utilization of wetlands. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that in actual use, the means for monitoring greenhouse gas emissions from vegetation lacks long-term in-situ synchronous observation of multiple gases based on vegetation growth, and synchronous observation of greenhouse gas emission fluxes under different vegetation types in wetlands, and a gas exchange flux observation device is proposed.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas exchange flux observation device, including a base, the upper end of the base is provided with a bottom box, a middle box, an upper box and a limit assembly, the bottom box and the middle box are bottomless boxes, the upper box is a box with a top, a connecting mechanism is provided between the bottom box and the middle box and the middle box and the upper box, the upper end of the upper box is provided with an air pressure balance port, the right end of the middle box is provided with an air pressure balance port, the upper end of the upper box is fixedly connected with a capillary, the other end of the capillary is installed with a syringe, the right end of the upper box is installed with a thermometer, and the inner wall of the middle box is installed with a fan.

[0005] Preferably, the connection mechanism comprises a mounting frame fixedly connected to both sides of the middle box, a mounting block is fixedly connected to one side of the bottom box and the upper box close to the mounting frame, and a sealing gasket is provided at the upper end of the mounting block.

[0006] Preferably, a sealing groove is provided at the upper end of the base, and the sealing groove is matched with the bottom box.

[0007] Preferably, holes are provided on the surface of the base, and a plurality of the holes are evenly distributed on the surface of the base.

[0008] Preferably, handles are fixedly connected to both sides of the bottom box, the middle box and the upper box.

[0009] Preferably, the limiting assembly comprises a plurality of evenly distributed limiting rods arranged on both sides of the upper end of the base, and bolts are threadedly inserted into the upper ends of the limiting rods, and the bolts are threadedly connected to the base.

[0010] Preferably, a rectangular groove is formed at the right end of the limiting rod, a fixing plate is slidably connected to the inner wall of the rectangular groove, and a plurality of evenly distributed suction cups are fixedly connected to the right end of the fixing plate.

[0011] Preferably, one end of the fixing plate is fixedly connected to a spring, and the other end of the spring is fixed to a limiting rod.

[0012] In summary, the beneficial effects of the utility model are:

[0013] In the utility model, when observing the gas exchange flux of wetland plants, the bottom box, the middle box and the upper box are connected to form a whole, and then the base is inserted into the soil of the wetland plants to be observed, so that the wetland plants are in the box. At the same time, the bottom box, the middle box and the upper box are transparent glass boxes, and the temperature in the box is observed by a thermometer. The air pressure balance port is used to balance the air pressure of the gas emitted by the plants in the box, so that the internal gas is drawn into the syringe through a capillary tube, so as to observe the air pressure change in the syringe, and then the gas is stored in an air bag or a vacuum bottle. The problem of lack of means for monitoring greenhouse gas emissions from vegetation, long-term in-situ synchronous observation of multiple gases for observing greenhouse gas emissions according to vegetation growth, and synchronous observation of greenhouse gas emission fluxes under different vegetation types in wetlands is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the cross section of the middle box of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the limiting component of the utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the cross section of the limiting rod of the utility model.

[0018] Legend: 1. Base; 2. Bottom box; 3. Middle box; 4. Upper box; 5. Capillary; 6. Syringe; 7. Air pressure balance port; 8. Thermometer; 9. Fan; 10. Handle; 11. Limit assembly; 1101. Limit rod; 1102. Bolt; 1103. Rectangular groove; 1104. Fixing plate; 1105. Suction cup; 1106. Spring; 12. Connecting mechanism; 1201. Mounting frame; 1202. Mounting block; 13. Sealing groove; 14. Hole. DETAILED DESCRIPTION

[0019] Embodiment 1: As attached Figures 1 to 4 As shown, a gas exchange flux observation device,

[0020] Reference Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a gas exchange flux observation device comprises a base 1, the upper end of the base 1 is provided with a bottom box 2, a middle box 3, an upper box 4 and a limit assembly 11, the bottom box 2 and the middle box 3 are bottomless boxes, the upper box 4 is a box with a top, a connecting mechanism 12 is provided between the bottom box 2 and the middle box 3 and the middle box 3 and the upper box 4, the upper end of the upper box 4 is provided with an air pressure balance port 7, the right end of the middle box 3 is provided with an air pressure balance port 7, the upper end of the upper box 4 is fixedly connected with a capillary 5, and the other end of the capillary 5 is provided with an injection nozzle. The bottom box 2, the middle box 3 and the upper box 4 are connected to form a whole through the connecting mechanism 12, and then the base 1 is inserted into the soil of the wetland plant to be observed, so that the wetland plant is in the box. At the same time, the bottom box 2, the middle box 3 and the upper box 4 are transparent glass boxes. The temperature in the box is observed by the thermometer 8. By setting the fan 9, the gas inside the box is mixed, and the air pressure balance port 7 is used to balance the plants in the box. The gas pressure of the exhaust gas is so that the gas inside is drawn to the syringe 6 through the capillary 5, so as to observe the pressure change in the syringe 6, and then the gas is stored in an air bag or a vacuum bottle. The connecting mechanism 12 includes a mounting frame 1201 fixedly connected to both sides of the middle box 3, and a mounting block 1202 is fixedly connected to the side of the bottom box 2 and the upper box 4 close to the mounting frame 1201. The upper end of the mounting block 1202 is provided with a sealing gasket. By setting the mounting block 1202 and the mounting frame 1201, a protrusion is provided on the surface of the mounting block 1202, so that the mounting The block 1202 is inserted into the installation frame 1201, and the sealing gasket seals the boxes on both sides. A sealing groove 13 is provided at the upper end of the base 1, and the sealing groove 13 is adapted to the bottom box 2. The bottom box 2 is placed in the sealing groove 13 and sealed by injecting water. Holes 14 are provided on the surface of the base 1, and a plurality of holes 14 are evenly distributed on the surface of the base 1. By setting a plurality of holes 14, the flow of soil nutrients is facilitated. Handles 10 are fixedly connected to both sides of the bottom box 2, the middle box 3 and the upper box 4. By setting the handles 10, it is convenient to lift the box.

[0021] Reference Figure 3 and Figure 4As shown, in this embodiment: the limiting assembly 11 includes a plurality of evenly distributed limiting rods 1101 arranged on both sides of the upper end of the base 1, the upper ends of the limiting rods 1101 are threadedly inserted with bolts 1102, the bolts 1102 are threadedly connected to the base 1, when limiting the bottom box 2, the limiting rods 1101 are fixed to the base 1 by the bolts 1102, and the four limiting rods 1101 are pressed against the bottom box 2, thereby limiting the bottom box 2, and the right end of the limiting rod 1101 is provided with a rectangular groove 110 3. The inner wall of the rectangular groove 1103 is slidably connected with a fixing plate 1104, and the right end of the fixing plate 1104 is fixedly connected with a plurality of evenly distributed suction cups 1105. By setting the rectangular groove 1103, the fixing plate 1104 and the suction cup 1105, the bottom box 2 is further limited. One end of the fixing plate 1104 is fixedly connected with a spring 1106, and the other end of the spring 1106 is fixed to the limiting rod 1101. By setting the spring 1106, the suction cup 1105 is squeezed.

[0022] Working principle:

[0023] When observing the gas exchange flux of wetland plants, the bottom box 2, the middle box 3 and the upper box 4 are connected as a whole through the connecting mechanism 12, and then the base 1 is inserted into the soil of the wetland plants to be observed, so that the wetland plants are in the box. At the same time, the bottom box 2, the middle box 3 and the upper box 4 are transparent glass boxes. The temperature in the box is observed by a thermometer 8. The air pressure balance port 7 is used to balance the air pressure of the gas discharged by the plants in the box, so that the internal gas is drawn into the syringe 6 through the capillary 5, so as to observe the air pressure change in the syringe 6, and then the gas is stored in an air bag or a vacuum bottle. By setting the mounting block 1202 and the mounting frame 1201, the surface of the mounting block 1202 is provided with a protrusion, from The mounting block 1202 is stuck into the mounting frame 1201, and the sealing gasket seals the boxes on both sides. The bottom box 2 is placed in the sealing groove 13, and is sealed by injecting water. A plurality of holes 14 are provided to facilitate the flow of soil nutrients. A handle 10 is provided to facilitate lifting the box. When limiting the bottom box 2, the limiting rod 1101 is fixed to the base 1 by bolts 1102, and the four limiting rods 1101 are squeezed onto the bottom box 2, thereby limiting the bottom box 2. The bottom box 2 is further limited by providing a rectangular groove 1103, a fixing plate 1104 and a suction cup 1105, and the suction cup 1105 is squeezed by providing a spring 1106.

[0024] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be 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, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A gas exchange flux observation device, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a bottom box (2), a middle box (3), an upper box (4) and a limit assembly (11); the bottom box (2) and the middle box (3) are bottomless boxes; the upper box (4) is a box with a top; a connecting mechanism (12) is provided between the bottom box (2) and the middle box (3) and the middle box (3) and the upper box (4); the upper end of the upper box (4) is provided with an air pressure balance port (7); the right end of the middle box (3) is provided with an air pressure balance port (7); the upper end of the upper box (4) is fixedly connected with a capillary tube (5); the other end of the capillary tube (5) is provided with a syringe (6); the right end of the upper box (4) is provided with a thermometer (8); and the inner wall of the middle box (3) is provided with a fan (9).

2. A gas exchange flux observation device according to claim 1, characterized in that: The connection mechanism (12) comprises a mounting frame (1201) fixedly connected to both sides of the middle box (3); a mounting block (1202) is fixedly connected to one side of the bottom box (2) and the upper box (4) close to the mounting frame (1201); and a sealing gasket is provided at the upper end of the mounting block (1202).

3. A gas exchange flux observation device according to claim 2, characterized in that: A sealing groove (13) is provided at the upper end of the base (1), and the sealing groove (13) is matched with the bottom box (2).

4. A gas exchange flux observation device according to claim 3, characterized in that: The surface of the base (1) is provided with holes (14), and a plurality of the holes (14) are evenly distributed on the surface of the base (1).

5. A gas exchange flux observation device according to claim 4, characterized in that: Handles (10) are fixedly connected to both sides of the bottom box (2), the middle box (3) and the upper box (4).

6. A gas exchange flux observation device according to claim 5, characterized in that: The limiting assembly (11) comprises a plurality of evenly distributed limiting rods (1101) arranged on both sides of the upper end of the base (1); bolts (1102) are threadedly inserted into the upper ends of the limiting rods (1101); and the bolts (1102) are threadedly connected to the base (1).

7. A gas exchange flux observation device according to claim 6, characterized in that: A rectangular groove (1103) is provided at the right end of the limiting rod (1101), a fixing plate (1104) is slidably connected to the inner wall of the rectangular groove (1103), and a plurality of evenly distributed suction cups (1105) are fixedly connected to the right end of the fixing plate (1104).

8. A gas exchange flux observation device according to claim 7, characterized in that: One end of the fixing plate (1104) is fixedly connected to a spring (1106), and the other end of the spring (1106) is fixed to the limiting rod (1101).

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