Temperature-controllable transparent static box and field in-situ greenhouse gas collecting method
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A controllable, static box technology, applied in the field of global change ecology research, can solve problems such as the inability to directly measure the NEE of terrestrial ecosystems, and achieve the effect of avoiding errors, fast installation, and ensuring accuracy
Active Publication Date: 2018-07-24
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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Problems solved by technology
Although the static dark box can alleviate the rapid temperature rise in the box to a certain extent; however, the static dark box can only be used to measure the respiration of the ecosystem, and cannot directly measure the NEE of the terrestrial ecosystem. The NEE of the ecosystem can only be measured through the soil-plant system. Respiration is estimated indirectly and has a large error
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Embodiment 1
[0036] according to figure 1 , figure 2 It can be seen that a temperature-controllable transparent static box is composed of a soil ring 1, a water tank 2, a box body 3, a cooling water tank 4, a water pump 5, a coolant 6, a water inlet pipe 7, an air pressure balance pipe 8, an outlet pipe 9, and a water inlet pipe. Hole 10, air pressure balance hole 11, water outlet hole 12, top cover 13, air cooler 14, fan 15, temperature controller 16, water pump power controller 17, high-sensitivity temperature probe 18, mobile power supply 19, gas sampling tube 20, sampling Air valve 21, waterproof cover 22, sampling hole 23, temperature probe jack 24, fan power supply hole 25 are formed. It is characterized in that: the soil ring 1 is buried in the sample plot to be tested, the water tank 2 is bonded and fixed on the soil ring 1, the cooling water tank 4 is connected with the box body 3; the box body 3 is placed in the water tank 2 filled with tap water; the cooling water tank 4 Fixe...
Embodiment 2
[0041] A method for in-situ sampling of greenhouse gases, the steps of which are:
[0042] Step 1. Embed the prepared base (soil ring 1 and water tank 2) in advance at the sample point to be tested, with an embedding depth of 20cm;
[0043] Step 2, put the box body 3 into the water tank 2, and fill the water tank 2 with tap water;
[0044] Step 3, pour the frozen coolant 6 into the cooling water tank 4;
[0045] Step 4, the mobile power supply 19 is connected with the temperature controller 16 and the fan 15;
[0046] Step five, read the instant temperature of the temperature controller 16 (air temperature -5 or -3 or -1 or 5 or 10 or 20 or 30 or 40° C.), and set the start and stop temperature of the temperature controller 16 as required. If the starting temperature is set to "air temperature (-5 or -2 or 8 or 16 or 24 or 32 or 40°C) + 0.1°C (that is, when the temperature in the box is 0.1°C higher than the air temperature, turn on the power of the pump), The stop temperatu...
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Abstract
The invention discloses a temperature-controllable transparent static box and a field in-situ greenhouse gas collecting method. A water trough is adhered and fixed to a soil ring; a refrigerating water tank is connected with a box; the refrigerating water tank is fixed to the box through a guide rail; a water pump is placed at the bottom of the refrigerating water tank; a water inlet pipe is connected with a water outlet of the water pump in a sleeving manner; a gas pressure balancing tube is communicated with the box through a gas pressure balancing hole; one end of a water outlet pipe is placed on the refrigerating water tank; a top cover is adhered to the top of the box in a sealed manner; the top of an air cooler is fixed to the inner side of the top cover; the output end is connectedwith the water pump through a water pump power controller; a high-sensitivity temperature probe is connected with a temperature controller through a temperature probe inserting hole; a mobile power supply is directly connected with the input end of the temperature controller and connected with a fan through a fan power hole; one end of a sampling tube is communicated with the box through a sampling hole; a gas collecting valve is fixed to the upper end of the sampling tube. The temperature-controllable transparent static box is significant in effect, low in cost, simple in structure, portable,easy to operate, wide in application range and high in result sensitivity, and the temperature and the air pressure inside the box can be effectively controlled.
Description
technical field [0001] The invention belongs to the field of global change ecology research, more specifically relates to a temperature-controllable transparent static box, and also relates to an in-situ sampling method for greenhouse gases. It is suitable for the study of greenhouse gas emissions in terrestrial ecosystems. Through the direct measurement of the net exchange of greenhouse gases between the earth and the atmosphere, the net exchange rate of greenhouse gases in the terrestrial ecosystem-atmosphere (NEE, net ecosystem exchange) can be directly obtained. Background technique [0002] CO 2 , CH 4 , N 2 O is the three major greenhouse gases in the world. In 2016, global CO 2 The concentration reached 403.3ppm (1ppm is one part per million), higher than 400ppm in 2015, which was 145% of the pre-industrial (before 1750) level; the concentration of methane reached a new high, about 1853ppb (1ppb is one billionth part One), which is 257% of the pre-industrial level...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N1/22
CPCG01N1/22G01N30/06
Inventor 邓正苗陈心胜谢永宏李峰邹业爱朱莲莲任艺洁
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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