System and method for in situ measurement of soil greenhouse gas emission rate
A greenhouse gas and emission rate technology, which is applied in measurement devices, preparation of test samples, instruments, etc., can solve the problems of inaccurate measurement rate, increase the accuracy of soil release gas, and incomplete measurement of emission gas types, and achieves an increase in the The effect of accuracy
Active Publication Date: 2019-08-23
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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Problems solved by technology
[0004] Aiming at the problems of incomplete measurement of emission gas types and inaccurate measurement rate existing in existing measurement devices and calculation methods of greenhouse gas release rate, the present invention provides a system and method for in-situ measurement of soil greenhouse gas emission rate
thereby systematically increasing the accuracy of rate measurements of soil-releasing gas-related processes
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[0031] The present invention will be further described below in combination with specific embodiments and accompanying drawings.
[0032] Such as figure 1 and figure 2 As shown, a system for in situ measurement of soil greenhouse gas emission rate, including the following components:
[0033] (1) Airtight cavity: including the cavity upper cover 11 and the cavity lower cover 12, the lower edge of the cavity upper cover 11 is coated with mastic, and the cavity lower cover 12 is wrapped in it in a compressed and closed manner to form an airtight cavity; An airtight plug 13 is embedded in the cavity upper cover 11;
[0034] (2) Internal and external communication parts of the cavity: including the thin tube 2 and the liquid drop 1 located in the thin tube 2, and the pinhole part 16, one end of the pinhole part 16 communicates with the inner end of the thin tube 2, and the other end passes through the airtight plug 13 and Extending into the cavity, and then connecting the thin...
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Abstract
The invention discloses a soil-borne greenhouse gas emission rate in-situ measurement system and method. The system comprises a sealed cavity, a detecting unit and a cavity communicating unit, wherein the cavity communicating unit is composed of a thin tube, drops in the thin tube and a pinhole unit with one end communicated with the thin tube; the detecting unit is composed of pressure, temperature, oxygen, carbon dioxide and methane sensors which are connected with a data collecting computer outside the sealed cavity, and the data collecting computer is also connected with a visual sensor corresponding to the drops. According to the soil-borne greenhouse gas emission rate in-situ measurement system, the communicating unit can achieve pressure consistency of the inside and the outside of the sealed cavity and accordingly can help obtain precise soil-borne gas emission measured and calculated values. The invention also discloses a soil-borne greenhouse gas emission rate in-situ measurement and calculation method.
Description
technical field [0001] The invention relates to a technology for soil greenhouse gas emission rate, in particular to a technology for measuring the rate of greenhouse gas released from soil in an in-situ state, and belongs to the technical field of greenhouse gas emission. Background technique [0002] The current mainstream method for measuring the release rate of soil greenhouse gases is to extract a certain amount of gas from the field, bring it back to the laboratory, and use the gas phase method to measure the relevant concentration. Therefore, the operation process is relatively complicated and expensive. At the same time, this method cannot obtain parameters such as soil respiration rate, soil nitrification reaction, soil denitrification reaction, and methane gas emission in real time. [0003] However, the current method of obtaining the relevant rate based on the gas ideal state equation needs to seal the soil to be tested. Since in this type of method, the volume o...
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IPC IPC(8): G01N33/00G01N1/22G01N1/24G01N1/28
Inventor 蒋海波杜忠颜忠峰高巧
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S