CN103235105B - Soil gas flux detector and assay method thereof - Google Patents
Soil gas flux detector and assay method thereof Download PDFInfo
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Abstract
A kind of soil gas flux detector, including soil ring (1), supporting leg (2), base (20), air chamber (7), protective cover (8), passing spool (9) and control chamber (19) is characterized in that, described base (20) is arranged over sealing ring (5) and pressing annular (3), it is connected with supporting leg (2) at base (20), supporting leg (2) is provided with leg chute (16) and leg rotating shaft (14), described air chamber (7), protective cover (8) and passing spool (9) are provided with buffer unit (8-7), described control chamber (19) is provided with return button (19-4).With the problem that trachea and circuit expose, air chamber sideslip, measurement error are big solving soil gas flux detector.
Description
Technical field
The present invention relates to a kind of ecological self-operated measuring unit field, be specially a kind of soil gas flux detector and a kind of assay method using soil gas flux detector to measure.
Background technology
It is that gas enters the main path of air from soil that terrestrial soil is breathed, closely related with Global climate change.Soil respiration has obvious season and diurnal variation is dynamic, its season is dynamic and variations in temperature feature is closely related, additionally, the factor affecting soil respiration is a lot, except the physical characteristics such as the permeability except soil and biomass N, the content of temperature, soil epidemic disaster, Atmospheric CO2 concentration, soil inorganic nutrient and organic matter all can affect soil respiration with composition etc..
The increase day by day of greenhouse gases content, is the one of the main reasons causing global greenhouse effect.A large amount of carbon that Land_use change part is fixed are retained in the soil organism and vegetation, global soil carbon reserves be about in vegetation carbon reserves 1.5 times, to the storage capacity of carbon base in soil and dynamically change study, be the focus direction of current ecological study.It is utilize CO2 concentration change in CO2 analysis-e/or determining gas exchange room to accurately reflect that present soil carbon is breathed, use and need to use measuring chamber during the method, have evolved at present use automatic flux box to measure, existing related researcher carries out the research of this aspect at home, as publication number is: CN102288545A, CN101949919A, CN101162225, CN1987421, CN202008480U, CN2605571, but when using these devices, the situation that measuring result error is bigger easily occurs, the integration of equipment is poor, packaging effects is poor, circuit major part exposes to the open air outside, easily by the corrosion of outside air or rainwater, shorten the service life of soil gas flux detector, on the other hand, circuit and trachea are exposed, easily it is worn, and leak gas, and then the result that impact is measured, existing device not can solve this problem.
Meanwhile, when off working state, air chamber position can not manual return, field operation is inconvenient, is not easy to vanning transport.Especially on air chamber is fixing, adopt and be directly anchored on swing arm, owing to air chamber to be sealed when measuring, it is necessary to link closely thereon, it is easy to cause air chamber casing deformation, come off, have a strong impact on stability and the service life of measurement apparatus.And, soil gas flux detector not easily judges whether instrument is in level when installing, air chamber occurs can not timely automated to correct during the skew of position, has a strong impact on stability and the service life of measurement apparatus, causes the systematic error of experimental result and incidental error bigger.Also have, owing to need to reduce soil gas flux detector projected area on the ground when measuring soil respiration as far as possible, existing soil gas flux detector is all utilized on the base of a far super air chamber of area to punch, reduce the projected area of soil gas flux detector, but so still can not well reduce the projected area of soil gas flux detector.Due to measurement soil respiration owing to gas distributes, it is easy to the CONCENTRATION DISTRIBUTION causing each gas of plenum interior is uneven, and then the result that impact is measured, existing device not can solve the problems referred to above.
Summary of the invention
The purpose of the application is in that to provide a kind of soil gas flux detector, expose with the trachea and circuit solving soil gas flux detector, the skew of air chamber position, problem that measurement error is big.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of soil gas flux detector, including soil ring (1), supporting leg (2), base (20), air chamber (7), protective cover (8), passing spool (9) and control chamber (19) is characterized in that, described base (20) is arranged over sealing ring (5) and pressing annular (3), it is connected with supporting leg (2) at base (20), supporting leg (2) is provided with leg chute (16) and leg rotating shaft (14), described air chamber (7), protective cover (8) and passing spool (9) are provided with buffer unit (8-7), described control chamber (19) is provided with return button (19-4), the afterbody of described base (20) is provided with handle (13).
Further, described trachea the extending below at blower tray (7-2) in air chamber (7), A end points is air inlet, B end points is gas outlet, two-end-point deviates from into 180 ° of angles mutually, trachea is by the buffer unit (8-7) in protective cover (8), arrive in passing spool (9) again, out in crossbeam (10) from slide block (9-1), it is fixed in crossbeam on bar (10-2) by deck (10-4) in crossbeam (10), out enter to sleeve pipe (12) from the circuit spacing hole (10-7) of crossbeam cover body (10-1) afterbody, pg joint (19-1) in sleeve pipe (12) with control chamber (19) enters into control chamber (19), it is connected with the escape pipe joint (19-2) on control chamber (19) and air inlet pipe joint (19-3) respectively, wherein C end points is connected with A end points, D end points is connected with B end points.
Further, described protective cover (8) is connected to below passing spool (9), has pressing plate (8-5) that it is fastened at an upper portion thereof, and described air chamber (7) has pressure-equalizing pipe (8-6).
Further, described pressure-equalizing pipe (8-6) is that a conical pipe is fixed on air chamber (7) by the nut by two M5.
Further, described buffer unit (8-7) is made up of axle sleeve (8-1) and passing spool (9), insert in axle sleeve (8-1) at passing spool (9), slide block (9-1) matches with axle sleeve (8-1), upper shaft cage plate (8-2) is enclosed within passing spool (9), match with axle sleeve (8-1), again by stay bolt (8-3) from top to bottom through upper shaft cage plate (8-2), slide block (9-1), spring (8-4), finally it is connected with axle sleeve (8-1).
Further, resupinate shape is made in the air chamber outer (7-1) of described air chamber (7).
Further, described base (20) is divided into base anchor ring (20-5) and floor installation district (20-6), and base anchor ring (20-5) is annular circular, its diameter 2cm-20cm bigger than the diameter of air chamber (7).
Further, described is provided with mean for the base internal ring (20-3) that soil ring (1) inserts on base anchor ring (20-5), meanwhile, it is additionally provided with base ventilation holes (20-4), in its base ventilation holes (20-4), has screw thread.
Further, described floor installation district (20-6) is provided with installing hole (20-1) and cylinder hole, location (20-2), the cylinder internal for installing control chamber (19).
It addition, the present invention also provides for a kind of assay method, described method includes:
A) soil ring (1) is shifted to an earlier date precompressed in 24-48 hour and enter in soil, at utmost reduce the impact on soil respiration；
B) soil gas flux detector is installed, regulates the height of supporting leg (2), it is ensured that soil ring (1) is through base (20), and the highest point of soil ring (1) is lower than the top 15mm-25mm of base (20)；
C) fixed supporting leg (2), tighten the fastening screw (6) on supporting leg (2), in order to avoid causing soil gas flux detector to slide in measurement process；
D) it is connected with measurement main frame, it is ensured that soil gas flux detector electric power is sufficient, and communication signal is normal；
E) by snap joint, the air inlet pipe measured on main frame and escape pipe are connected with escape pipe joint (19-2) and air inlet pipe joint (19-3) respectively；
F) open the control switch measured on main frame, the running parameter upper set in advance of main frame measure；
G) air chamber (7) moves reciprocatingly with the cylinder piston rod (21) on control chamber (19) for the center of circle, is measured measuring point.
The invention have the advantages that
1) very high integrity of the present invention, has protective cover (8), and many places are provided with water-tight device, good seal performance, are not disturbed by dust storm dust, and work interference such as out of doors being susceptible to dust storm dust；The rainwater destruction to device during outwork can be prevented effectively from；
2) there is air chamber returning device, it is simple to the packaging of soil gas flux detector, transport and installation；
3) this device can extend the service life of soil carbon flux determinator air chamber；
4) present invention both can reduce the venturi-effect outside when soil carbon flux determinator works, and ensures that plenum interior pressure is normal；
5) this device is owing to being provided with horizontal ball (11), in that context it may be convenient to whether the measurement zone measuring soil gas flux detector is in level；
6) present invention is with the deviation correcting device of air chamber (7), it can be ensured that when soil gas flux detector is in work air chamber (7) will not due to directional error sideslip；
7) Teflon silica gel is adopted to make sealing ring, owing to common rubber is to CO2There is absorption, measurement result is produced impact；
8) trachea and spool are hidden in crossbeam (10) by soil gas flux detector, are not easily soaked with rain and corrode；
9) soil gas flux detector many places are provided with antiwear device, it is ensured that the trachea of soil gas flux detector and circuit are not easily worn and break.
Accompanying drawing explanation
Fig. 1 is soil gas flux detector structural representation
The trachea that Fig. 2 is the pressing annular (3) after removing air chamber (7) and protective cover (8) connects figure
Fig. 3 is the structure chart of the pressing annular (3) after removing protective cover (8)
Fig. 4 is Fig. 3 A place partial enlarged drawing
Fig. 5 is the structure chart of the pressing annular (3) after removing crossbeam (10)
Fig. 6 is the explosive view of crossbeam (10)
Fig. 7 is the explosive view of base (20) and assembly thereof
Fig. 8 is the assembling figure of base (20) and related accessories
Fig. 9 is the structure chart of base (20)
Figure 10 is the structure chart of passing spool (9)
Figure 11 is the upward view of crossbeam (10)
Figure 12 is the buffer unit structure figure of soil gas flux detector
Soil ring 1；Supporting leg 2；Pressing annular 3；Screw hole 4；Sealing ring 5；Fastening screw 6；Air chamber 7；Protective cover 8；Passing spool 9；Crossbeam 10；Horizontal ball 11；Sleeve pipe 12；Handle 13；Leg rotating shaft 14；Prop up underfooting along 15；Leg chute 16；Along 17 under bearing length；Along 18 under chassis；Control chamber 19；Base 20；Cylinder piston rod 21；Locating piece 3-1；Pore 3-2；Ring inner face 3-3；Upper convex portion 5-1；Sealing ring pore 5-2；5-3 at the bottom of cyclic group；Installing hole 20-1；Cylinder location hole 20-2；Base internal ring 20-3；Base ventilation holes 20-4；Base anchor ring 20-5；Floor installation district 20-6；Air chamber outer 7-1；Blower tray 7-2；Axle sleeve 8-1；Upper shaft cage plate 8-2；Stay bolt 8-3；Spring 8-4；Pressing plate 8-5；Pressure-equalizing pipe 8-6；Buffer unit 8-7；Slide block 9-1；Elongated hole 9-2；Adapter 9-3；Crossbeam cover body 10-1；Bar 10-2 in crossbeam；Axostylus axostyle installing hole 10-3；Deck 10-4；Piston rod installing hole 10-5；Interior bar installing hole 10-6；Circuit spacing hole 10-7；Pg joint 19-1；Escape pipe joint 19-2；Air inlet pipe joint 19-3；Return button 19-4；Installing hole 20-1；Cylinder location hole 20-2；Base internal ring 20-3；Base ventilation holes 20-4.
Detailed description of the invention
As it is shown in figure 1, a kind of soil gas flux detector, its soil gas flux detector mainly includes soil ring (1), supporting leg (2), base (20), air chamber (7) and control chamber (19).Base (20) be arranged below soil ring (1), it is respectively provided with under two bearing length on its both sides under (17) and chassis along (18), equipped with the supporting leg (2) linked together by leg rotating shaft (14) along edge (18) under (17) and chassis under bearing length, supporting leg (2) is provided with leg chute (16), the rotation of supporting leg (2) with leg rotating shaft (14) be the center of circle, leg chute (16) carry out altitude mixture control for track, thus soil gas flux detector is not susceptible to displacement, more firm.
As shown in Figure 2, trachea extending below at blower tray (7-2) in air chamber (7), A end points is air inlet, B end points is gas outlet, two-end-point deviates from into 180 ° of angles mutually, enter into the buffer unit (8-7) in protective cover (8) together, arrive in passing spool (9) again, out in crossbeam (10) from slide block (9-1), it is fixed in crossbeam on bar (10-2) by deck (10-4) in crossbeam (10), from the circuit spacing hole (10-7) of crossbeam cover body (10-1) afterbody out into sleeve pipe (12), pg joint (19-1) in sleeve pipe (12) with control chamber (19) enters into control chamber (19), it is connected with the escape pipe joint (19-2) on control chamber (19) and air inlet pipe joint (19-3) respectively, wherein C end points is connected with A end points, D end points is connected with B end points.
As shown in Figure 3, it is the structural representation of the soil gas flux detector after removal protective cover (8), shown in Fig. 4, protective cover (8) is connected to below passing spool (9), there is pressing plate (8-5) that it is fastened at an upper portion thereof, protective cover (8) is securely seated between air chamber (7) above, air chamber (7) is additionally provided with pressure-equalizing pipe (8-6), pressure-equalizing pipe (8-6) is that the nut by two M5 is by fixed thereon for a conical pipe, in order to ensure the internal normal pressure of air chamber (7), pressure-equalizing pipe (8-6) is advisable to set two, on the other hand, due in the pressure-equalizing pipe (8-6) inside in protective cover (8), the venturi-effect in the external world can be reduced, and, when rain out of doors, protective cover (8) can play protective action, pressure-equalizing pipe (8-6) is not easily blocked by rainwater.
As shown in figure 12, the buffer unit of soil gas flux detector is mainly made up of axle sleeve (8-1) and passing spool (9), passing spool (9) is placed in axle sleeve (8-1), slide block (9-1) matches with axle sleeve (8-1), upper shaft cage plate (8-2) is enclosed within passing spool (9), match with axle sleeve (8-1), again by stay bolt (8-3) from top to bottom through upper shaft cage plate (8-2), slide block (9-1), spring (8-4), finally it is connected with axle sleeve (8-1).
As shown in Figure 5, it it is the structure chart after soil gas flux detector removes crossbeam cover body (10-1), in crossbeam, bar (10-2) one end is connected with cylinder piston rod (21), and the other end and passing spool (9) link together.
As shown in Figure 6, it is enclosed with in crossbeam in the inside of crossbeam cover body (10-1) bar (10-2), bar (10-2) is provided with the axostylus axostyle installing hole (10-3) being connected with passing spool (9) in crossbeam, and the piston rod installing hole (10-5) being connected with cylinder piston rod (21), in crossbeam, the side of bar (10-2) is provided with two or more deck (10-4), in crossbeam, bar (10-2) has the groove of multiple installed cassette (10-4), in crossbeam, bar (10-2) is provided with interior bar installing hole (10-6) screw being connected with crossbeam cover body (10-1), so that screw is by wherein combining bar (10-2) in crossbeam cover body (10-1) and crossbeam.At position circuit spacing hole (10-7) that crossbeam (10) is connected with sleeve pipe (12) for laterally oval, because when crossbeam (10) can drive sleeve pipe (12) to move together when motion, thus the trachea entered in sleeve pipe (12) and circuit can be rubbed, owing to soil gas flux detector operationally may through the reciprocating motion of up to ten thousand times, it is mainly transverse translation, therefore circuit spacing hole (10-7) is designed to the lateral shaft ellipse more than longitudinal axis, the friction contacted between sleeve pipe (12) with crossbeam (10) can be reduced, thus extending the service life of soil gas flux detector.
As shown in Figure 10, passing spool (9) is made up of slide block (9-1), elongated hole (9-2) and adapter (9-3), in air chamber (7), trachea out and the circuit pipeline by way of passing spool (9), protrude in crossbeam (10) from elongated hole (9-2).
As shown in Figure 8, mainly there are base (20), sealing ring (5) and pressing annular (3), afterbody at base (20) is provided with handle (13), base (20) be arranged above with sealing ring (5), pressed against pressing annular (3) on sealing ring (5), concrete layer structure is as shown in Figure 7.
As can be seen from Figure 7, sealing ring (5) at the bottom of in its cyclic group on be provided with sealing ring pore (5-2), its part protruded upward is upper convex portion (5-1), the internal ring size of upper convex portion (5-1) matches with soil ring (1), to keep the tight seal of base (20) and soil ring (1), its ring is outside simultaneously matches with air chamber (7), so that it is guaranteed that during the work of soil gas flux detector, air chamber (7), base (20) and sealing ring (5) can form an airtight space.
In order to sealing ring (5) is fixed on base (20), it is arranged over pressing annular (3) at sealing ring (5), being provided with the pore (3-2) corresponding with sealing ring pore (5-2), base ventilation holes (20-4) on pressing annular (3), the area of the ring inner face (3-3) on pressing annular (3) is more than the internal ring area of sealing ring (5).Air chamber (7) in order to ensure pressing annular (3) top can accurately drop in ring inner face (3-3), it is additionally provided with locating piece (3-1) at pressing annular (3), on the other hand, in order to increase the contact surface of air chamber (7) and ring inner face (3-3), resupinate shape is made in the air chamber outer (7-1) of air chamber (7).Like this, on the one hand owing to increasing the contact area of air chamber (7) and sealing ring (5), tightness is better, can contact with locating piece (3-1) on the other hand, form certain slope, owing to the guiding of locating piece (3-1) is very easy to slide in ring inner face (3-3).
Sealing ring (5) is made into integration by Teflon silica gel, and Teflon silica gel is also known as Teflon silica gel, nontoxic, will not to CO2Produce absorption, soil gas flux detector is compared other rubber and has an unexpected effect, experimental result will not be produced some impact.
As shown in Figure 9, base (20) is divided into base anchor ring (20-5) and floor installation district (20-6), base anchor ring (20-5) is annular circular, its diameter 2cm-20cm bigger than the diameter of air chamber (7), with more than 10cm for the best.
Base anchor ring (20-5) is provided with mean for the base internal ring (20-3) that soil ring (1) inserts, simultaneously, it is additionally provided with base ventilation holes (20-4), screw thread is had in its base ventilation holes (20-4), can be used to breathe freely on the one hand, reduce the base (20) projected area to soil to be measured, reduce the impact on measurement result, on the other hand, can pass through screw and pressing annular (3), with the pore (3-2) that base ventilation holes (20-4) is corresponding on sealing ring (5), sealing ring pore (5-2) tightens together, complete the assembling to base anchor ring (20-5) district accessory.
Floor installation district (20-6) is provided with installing hole (20-1), for the control chamber (19) in mounting seat (20), it is additionally provided with cylinder hole, location (20-2), the cylinder internal for installing control chamber (19) simultaneously.
Embodiment:
When needing the measurement carrying out soil respiration in the wild, soil gas flux detector and measurement main frame are taken field trial place by experimenter, proceed as follows:
A) soil ring (1) is shifted to an earlier date precompressed in 24 hours and enter in soil, at utmost reduce the impact on soil respiration；
B) soil gas flux detector is installed, regulates the height of supporting leg (2), it is ensured that soil ring (1) is through base (20), and the highest point of soil ring (1) is lower than the top 15mm-25mm of base (20)；
C) fixed supporting leg (2), tighten the fastening screw (6) on supporting leg (2), in order to avoid causing soil gas flux detector to slide in measurement process；
D) it is connected with measurement main frame, it is ensured that soil gas flux detector electric power is sufficient, and communication signal is normal；
E) by snap joint, the air inlet pipe measured on main frame and escape pipe are connected with air inlet pipe joint (19-2) and escape pipe joint (19-3) respectively；
F) open the control switch measured on main frame, the running parameter upper set in advance of main frame measure；
G) air chamber (7) moves reciprocatingly with the cylinder piston rod (21) on control chamber (19) for the center of circle, is measured measuring point.
Although some specific embodiments that schematically illustrate above illustrate and describe the present invention, but are not meant to present invention is limited only by various details therein.On the contrary, present invention spirit can be not necessarily departed from the category being equivalent to claims and scope makes various amendment in various details.Trachea installation, gas conveying, gas analysis, cylinder control and the measurement host machine part do not write exactly in description are device commonly used in the art and known general knowledge, existing relevant auxiliary products on market, such as reason adds the SF-3000 of associating and measures main frame, the part not being described in detail is the known general knowledge of this area, at this, no longer state.Meanwhile, the apparatus for automatically measuring said in the present invention, it is not limited to the measurement of soil carbon dioxide flux, those skilled in the art can thus associate the other kinds of gas analyser of connection, measures other gas flux and stable isotope.
Claims (8)
1. a soil gas flux detector, including soil ring (1), supporting leg (2), base (20), air chamber (7), protective cover (8), passing spool (9) and control chamber (19) is characterized in that, described base (20) is arranged over sealing ring (5) and pressing annular (3), it is connected with supporting leg (2) at base (20), supporting leg (2) is provided with leg chute (16) and leg rotating shaft (14), described air chamber (7), protective cover (8) is provided with buffer unit (8-7), described control chamber (19) is provided with return button (19-4), the afterbody of described base (20) is provided with handle (13), described trachea the extending below at blower tray (7-2) in air chamber (7), air inlet in described air chamber (7) mutually deviates from into 180 ° of angles with gas outlet, trachea is by the buffer unit (8-7) in protective cover (8), arrive in passing spool (9) again, out in crossbeam (10) from slide block (9-1), it is fixed in crossbeam on bar (10-2) by deck (10-4) in crossbeam (10), from the circuit spacing hole (10-7) of crossbeam cover body (10-1) afterbody out into sleeve pipe (12), pg joint (19-1) in sleeve pipe (12) with control chamber (19) enters into control chamber (19), it is connected with the escape pipe joint (19-2) on control chamber (19) and air inlet pipe joint (19-3) respectively, described buffer unit (8-7) includes axle sleeve (8-1), described passing spool (9) is placed in axle sleeve (8-1), slide block (9-1) matches with axle sleeve (8-1), upper shaft cage plate (8-2) is enclosed within passing spool (9), match with axle sleeve (8-1), again by stay bolt (8-3) from top to bottom through upper shaft cage plate (8-2), slide block (9-1), spring (8-4), finally it is connected with axle sleeve (8-1).
2. a kind of soil gas flux detector according to claim 1, it is characterized in that: described protective cover (8) is connected to below passing spool (9), there is pressing plate (8-5) that it is fastened at an upper portion thereof, described air chamber (7) has pressure-equalizing pipe (8-6).
3. a kind of soil gas flux detector according to claim 2, it is characterised in that: described pressure-equalizing pipe (8-6) is that a conical pipe is fixed on air chamber (7) by the nut by two M5.
4. according to the arbitrary described a kind of soil gas flux detector of claim 1-3, it is characterised in that: resupinate shape is made in the air chamber outer (7-1) of described air chamber (7).
5. according to the arbitrary described a kind of soil gas flux detector of claim 1-3, it is characterized in that: described base (20) is divided into base anchor ring (20-5) and floor installation district (20-6), base anchor ring (20-5) is annular circular, its diameter 2cm-20cm bigger than the diameter of air chamber (7).
6. a kind of soil gas flux detector according to claim 5, it is characterized in that: described base anchor ring (20-5) is provided with mean for the base internal ring (20-3) that soil ring (1) inserts, simultaneously, it is additionally provided with base ventilation holes (20-4), in its base ventilation holes (20-4), has screw thread.
7. a kind of soil gas flux detector according to claim 6, it is characterized in that: described floor installation district (20-6) is provided with installing hole (20-1) and cylinder hole, location (20-2), the cylinder internal for installing control chamber (19).
8. using an assay method for soil gas flux detector according to claim 7, described method includes:
A) soil ring (1) is shifted to an earlier date precompressed in 24 hours and enter in soil, at utmost reduce the impact on soil respiration；
B) soil gas flux detector is installed, regulates the height of supporting leg (2), it is ensured that soil ring (1) is through base (20), and the highest point of soil ring (1) is lower than the top 15mm-25mm of base (20)；
C) fixed supporting leg (2), tighten the fastening screw (6) on supporting leg (2), in order to avoid causing soil gas flux detector to slide in measurement process；
D) it is connected with measurement main frame, it is ensured that soil gas flux detector electric power is sufficient, and communication signal is normal；
E) by snap joint, the air inlet pipe measured on main frame and escape pipe are connected with escape pipe joint (19-2) and air inlet pipe joint (19-3) respectively；
F) open the control switch measured on main frame, running parameter set in advance on main frame measure；
G) air chamber (7) moves reciprocatingly with the cylinder piston rod (21) on control chamber (19) for the center of circle, is measured measuring point.
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| EP3346253A1 (en) * | 2017-01-05 | 2018-07-11 | Elio Milone | Dynamic flux chamber for monitoring and sampling soil gas from an indoor or outdoor breathable surface |
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| CN106198927A (en) * | 2016-08-02 | 2016-12-07 | 天津百利种苗培育有限公司 | A kind of Herba Oenanthes Javanicae differentiates the method for soil toxic gas |
| CN110824140B (en) * | 2019-10-22 | 2020-10-30 | 浙江农林大学 | Soil carbon flux measuring device |
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| US7509836B2 (en) * | 2005-09-01 | 2009-03-31 | Li-Cor, Inc. | Gas flux system chamber design and positioning method |
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| CN101162225A (en) * | 2007-11-13 | 2008-04-16 | 中国科学院水利部水土保持研究所 | Portable soil respiration measuring air cell |
| CN201429595Y (en) * | 2009-01-21 | 2010-03-24 | 福建师范大学 | Air chamber for measuring grassland CO* flux |
| KR101080095B1 (en) * | 2009-09-21 | 2011-11-04 | 한국지질자원연구원 | Monitoring system and monitoring method for detecting carbon dioxide concentration |
| CN203148934U (en) * | 2013-04-17 | 2013-08-21 | 北京萨维福特贸易有限公司 | Soil gas flux tester |
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2013
- 2013-04-17 CN CN201310133212.2A patent/CN103235105B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700001216A1 (en) * | 2017-01-05 | 2018-07-05 | Elio Milone | DYNAMIC FLOW CHAMBER FOR MONITORING AND CHAMPION OF INTERSTIZIAL GAS INDOOR AND MONI-TORAGE PROCEDURE AND SAMPLING IMPLEMENTED WITH THIS FLOW ROOM |
| EP3346253A1 (en) * | 2017-01-05 | 2018-07-11 | Elio Milone | Dynamic flux chamber for monitoring and sampling soil gas from an indoor or outdoor breathable surface |
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