Breathing ring suitable for soil respiration measurement and gas collection in earth-rock mountainous area

Abstract

The utility model discloses a breathing ring suitable for soil respiration measurement and gas collection in an earth-rock mountainous area, which comprises a breathing ring body, a self-adaptive sealing bag extending to the lower part of the breathing ring body is fixed at the bottom end of the breathing ring body along the circumferential direction, and the top end of the breathing ring body is coaxially and fixedly sleeved with a connecting plug. The side wall of the breathing ring body communicates with a gas collecting tank through a gas pipe. According to the breathing ring suitable for soil respiration measurement and gas collection in the earth-rock mountainous area, the carbon flux measurement device and the gas collection device used for detecting a soil respiration source are integrally designed, and the gas collection device can collect soil respiration gas used for measuring the carbon flux; therefore, the soil respiration data can be measured based on the same group of gases, and the data matching degree is higher. Meanwhile, the self-adaptive sealing bag can adapt to different landforms and is more attached to the soil surface, a relatively closed space can be formed in the breathing ring, external CO2 is prevented from entering the breathing ring, and the accuracy of a soil breathing measurement result is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil respiration measuring devices, and in particular relates to a breathing ring suitable for soil respiration measurement and gas collection in soil and rocky mountainous areas. Background Art

[0002] Soil respiration, as one of the important processes of energy and matter in soil ecosystems, is an important means to explore watershed carbon cycle and climate change. At present, soil respiration is mainly measured by soil respirometer to measure carbon flux. In addition, soil respiration gas collection devices such as breathing rings, rubber tubes and air pumps are used to extract soil respiration gas, and then the extracted gas is brought back to the laboratory to detect the source of soil respiration using the carbon isotope principle. However, when the soil respirometer is used, the soil respiration gas collection device cannot collect soil respiration gas during the determination of carbon flux; and the soil respiration gas collection device is very inconvenient for collecting soil respiration gas. Gravel on the soil surface will cause the breathing ring to be unable to fully contact the ground, and external CO2 will enter the measured environment, resulting in the measurement result being inconsistent with the true value. Utility Model Content

[0003] The utility model aims to provide a breathing ring suitable for soil respiration measurement and gas collection in earth and rock mountain areas, which solves the problems of poor data matching and inaccurate measurement results of existing soil respiration measurement devices.

[0004] The technical solution adopted by the utility model is: a breathing ring suitable for soil respiration measurement and gas collection in earth and rock mountain areas, comprising a breathing ring body, the bottom end of the breathing ring body is fixed with an adaptive sealing bag extending to the bottom thereof along the circumferential direction, the top end of the breathing ring body is coaxially fixed with a plug connector, and the side wall of the breathing ring body is connected to a gas collection tank through an air pipe.

[0005] The utility model is also characterized in that:

[0006] The adaptive sealing bag comprises a bag body made of rubber material, and the bag body is filled with fine sand.

[0007] The top end of the plug connector is connected to the soil respirometer.

[0008] A valve is provided on the air pipe.

[0009] Evacuate the gas collection tank.

[0010] The beneficial effects of the utility model are as follows: the utility model is suitable for soil respiration measurement and gas collection in soil and rocky mountainous areas. The carbon flux measurement device and the gas collection device for detecting the source of soil respiration are integrated into a design. The gas collection device can collect soil respiration gas for measuring carbon flux, so that the soil respiration data can be measured based on the same set of gases, and the data matching degree is higher. At the same time, the adaptive sealing bag can adapt to different landforms, fit the soil surface more closely, and form a relatively closed space in the breathing ring to prevent external CO2 from entering, thereby improving the accuracy of soil respiration measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a structural schematic diagram of a breathing ring suitable for soil respiration measurement and gas collection in soil and rocky mountainous areas.

[0012] In the figure, 1. breathing ring body, 2. adaptive sealing bag, 3. plug connector, 4. air pipe, 5. gas collection tank, 6. valve. DETAILED DESCRIPTION

[0013] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0014] Example 1

[0015] The utility model provides a breathing ring suitable for soil respiration measurement and gas collection in soil and rocky mountainous areas, such as Figure 1 As shown, it includes a breathing ring body 1, and the bottom end of the breathing ring body 1 is fixed with an adaptive sealing bag 2 extending to the bottom thereof with PVC glue along the circumferential direction. The adaptive sealing bag 2 includes a rubber bag body filled with fine sand, which can better fit the soil surface with a small part of stones. The top of the breathing ring body 1 is coaxially fixed with a plug connector 3 connected to the top of the soil respirator. The side wall of the breathing ring body 1 is connected to an internal vacuum gas collection tank 5 through an air pipe 4, and a valve 6 is provided on the air pipe 4.

[0016] Through the above-mentioned method, the breathing ring of the utility model suitable for soil respiration measurement and gas collection in soil and rocky mountainous areas has an integrated design of a carbon flux measurement device and a gas collection device for detecting the source of soil respiration. The gas collection device can collect soil respiration gas used to measure carbon flux, so that the soil respiration data can be measured based on the same set of gases, and the data matching degree is higher. At the same time, the adaptive sealing bag 2 can adapt to different landforms, fit the soil surface more closely, and form a relatively closed space in the breathing ring to prevent external CO2 from entering, thereby improving the accuracy of soil respiration measurement results.

[0017] Example 2

[0018] The utility model provides a breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas. The overall height is 30 cm. The breathing ring body 1 and the plug connector 3 are both made of PVC material, the adaptive sealing bag 2 is made of scratch-resistant rubber material, and the interior is filled with light fine sand. The overall weight is controlled within 5 kg, which is convenient for transportation and use.

[0019] Example 3

[0020] When in use, a small amount of the bottom end of the breathing ring body 1 is inserted into the tested soil, and the fine sand in the outer adaptive sealing bag 2 adheres to the surface under the action of gravity, forming a closed soil test environment, so that the soil respirometer connected to the plug connector 3 can read faster and more accurately. The interior of the gas collection tank 5 is a vacuum environment. After the breathing ring body 1 is connected, the valve 6 is opened after the soil respiration carbon flux determination is completed. A pressure difference is formed between the vacuum gas collection tank 5 and the breathing ring body 1, and the gas enters the gas collection tank 5 through the air pipe 4 for collection. After completion, it is taken back to the laboratory to detect the source of soil respiration using the carbon isotope principle.

Claims

1. A breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas, characterized in that: The breathing ring body (1) comprises a breathing ring body, wherein an adaptive sealing bag (2) extending to the bottom thereof is fixedly provided at the bottom end thereof in the circumferential direction, a plug connector (3) is coaxially fixedly sleeved at the top end of the breathing ring body (1), and a side wall of the breathing ring body (1) is connected to a gas collecting tank (5) via an air pipe (4).

2. The breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas as claimed in claim 1, characterized in that: The adaptive sealing bag (2) comprises a bag body made of rubber material, and the bag body is filled with fine sand.

3. The breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas as claimed in claim 1, characterized in that: The top end of the plug connector (3) is connected to a soil respirometer.

4. The breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas as claimed in claim 1, characterized in that: The air pipe (4) is provided with a valve (6).

5. The breathing ring suitable for soil respiration measurement and gas collection in rocky mountainous areas as claimed in claim 1, characterized in that: The gas collection tank (5) is evacuated.

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