CN105938091A - Portable soil respiration measuring system - Google Patents
Portable soil respiration measuring system Download PDFInfo
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- CN105938091A CN105938091A CN201610548405.8A CN201610548405A CN105938091A CN 105938091 A CN105938091 A CN 105938091A CN 201610548405 A CN201610548405 A CN 201610548405A CN 105938091 A CN105938091 A CN 105938091A
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- 238000004158 soil respiration Methods 0.000 title claims abstract description 29
- 230000005855 radiation Effects 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 230000000241 respiratory effect Effects 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 claims description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 239000002689 soil Substances 0.000 abstract description 30
- 239000003513 alkali Substances 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002585 base Substances 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 abstract 1
- -1 silver aluminum Chemical compound 0.000 abstract 1
- 238000000034 method Methods 0.000 description 38
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- ZKHQWZAMYRWXGA-KQYNXXCUSA-J ATP(4-) Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O ZKHQWZAMYRWXGA-KQYNXXCUSA-J 0.000 description 2
- ZKHQWZAMYRWXGA-UHFFFAOYSA-N Adenosine triphosphate Natural products C1=NC=2C(N)=NC=NC=2N1C1OC(COP(O)(=O)OP(O)(=O)OP(O)(O)=O)C(O)C1O ZKHQWZAMYRWXGA-UHFFFAOYSA-N 0.000 description 2
- 101100243025 Arabidopsis thaliana PCO2 gene Proteins 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- 241001580947 Adscita statices Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 244000038280 herbivores Species 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 238000009531 respiratory rate measurement Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a portable soil respiration measuring system. The portable soil respiration measuring system comprises a date measuring and record reading meter, the bottom end of the date measuring and record reading meter is connected with the top of an infrared CO2 analyzer, the other end of the infrared CO2 analyzer penetrates through the top wall of a respiration chamber and extends into the respiration chamber, and the top end connecting position of the infrared CO2 analyzer and the respiration chamber is sleeved with a fixing base. The respiration chamber of the portable soil respiration measuring system is of a closed type, is non-transparent and is made of silver aluminum alloy, absorption of radiant heat is reduced, heat dissipation of the respiration chamber is improved, and the influence on ground microclimate by utilization of alkali liquor is reduced; a solar radiation sensor, a temperature and humidity sensor and the infrared CO2 analyzer are used so that soil can be detected conveniently, the error between test results and true values is reduced at different soil respiration speeds, the greenhouse effect of the respiration chamber is avoided to the greatest extent, the measurement environment is field environment, soil disturbance is avoided, and ground microclimate conditions are not affected.
Description
Technical field
The present invention relates to soil surveying technical field, particularly relate to the system of a kind of portable soil respiration measurement.
Background technology
Soil respiration is to characterize soil quality and the important biomolecule index of fertility, and it reflects geobiont and lives
Property and the intensity of soil material metabolism.During Ecological succession, the change of vegetation is by absorbing nutrient and returning
Also Organic substance etc., to affect the physico-chemical and biological properties of soil, soil respiration changes the most therewith,
Indicate process and the direction of ecosystem succession.Additionally, in terms of microclimatology angle, the CO2 of soil release
Change subaerial microclimate condition, provide more rich carbon source for plant bottoms canopy.Portable soil
Earth respiratory measurement system is made up of main frame and hand-held double channel data acquisition display, exhales for field soil
Suction/CO2 flux measurement.
Typically measuring method is divided into indirect determination method and the big class of Direct Determination two: 1, indirect method is
Soil respiration rates is calculated by measuring other indexs of correlation, such as, the metabolism that soil is total, permissible
From net primary production, the deduction energy that herbivore is consumed on the ground is estimated.Also there is researcher soil
Adenosine triphosphate (ATP) content estimation soil respiration in earth.Additionally, have researcher by research temperature and
The moisture impact on soil respiration, sets up regression equation calculation and draws the size of soil respiration.Indirect method needs
Set up the quantitative relationship of surveyed index and soil, and this relation is generally used for specific ecosystem.Cause
The application of this this kind of method has bigger spatio-temporal restriction, and measurement result is difficult to measure with additive method
Result compares.
Direct method comprises in-site detecting and indoor measurement two class, according to briefly comparing various direct mensuration side
Method draws, a. static method, it is adaptable to various soil, but exists and change microclimate condition near the ground；The closeest
Closed chamber method, can monitor soil information continuously, but sampling interval can not be too short, require supplementation with same volume air；
C. static Alkali absorption method, equipment is simple, can repeat morely, but exists and be difficult to monitor continuously, the used in amounts of alkali
It is determined in advance；D. P in soil CO2 method, can be carried out continuously the monitoring on a little, but diffusion coefficient is difficult to Accurate Determining,
Be there is interference in soil；E. dynamic room method, extends influence to CO2 less, but existence changes near the ground micro-
Meteorological condition；F. dynamic Alkali absorption method, accurately, can be repeated several times monitoring simultaneously, but equipment is complicated, it is difficult to
Monitoring, and the used in amounts of alkali continuously is determined in advance；G. microclimate method, can be continuous, and large area is monitored, but needs
Measure canopy photosynthesis, plant and animal breathing rate simultaneously；H. PCO2 method in canopy, it is known that CO2 in canopy
Storehouse, source information, but diffusion coefficient and multiple microclimate parameter, poor stability need to be measured；I. PCO2 method on canopy,
Require that vegetation is uniform, and diffusion coefficient and multiple microclimate parameter, poor stability need to be measured；J. vortex correlation
Method, can carry out the mensuration in different area, it is desirable to vegetation is uniform, apparatus expensive, and result variation is big；K. room
Interior mensuration, condition is controlled, can repeat more, can METHOD FOR CONTINUOUS DETERMINATION for a long time, but serious disturbance soil, with field
Condition is inconsistent；L. soil column, maintains the original state structure of a bit, but workload is big, soil and plant
All it is disturbed；The most non-undisturbed soil, not by time restriction, available soil carbon rating information, but can not obtain
To actual respiratory capacity.
The most static alkali absorption method of the measuring method of present stage and sealed gas chamber method, the master of both approaches
The measuring process is wanted to be:
Static alkali absorption method: people utilize alkali absorption method research forest, grassland and farmland ecosystem
Soil respiration.Some researcher, with alkali liquor (NaOH or KOH solution), also has researcher solid base grain.
Their principle is the same, i.e. Alkali absorption CO2 forms carbonate, then with gravimetric method or neutralization titration
Calculate remaining alkali number, calculate the CO2 total amount of soil discharge in certain time according to formula.With alkali
As a example by liquid method, concrete operating process is as follows: the circular measuring point of selected a diameter of 25 centimetres in sample ground,
After being cut together by green plants in circle, the little tripod of high 2 cm is fixed on the center of circle, its
Upper placement has been injected into the glass jar of NaOH solution 20ml of 1.0mol/L in advance, uses zinc-plated gold rapidly
Belong to drum (diameter 25 centimetres, high 30 centimetres, one end is airtight) to be buckled on selected sample circle, outside completely cutting off
Boundary's air avoids the interference of atmosphere CO 2, in drum lower edge press-in soil 2 centimetres, it is ensured that bucket with extraneous without gas
Exchange.Take out alkali liquor bottle after a period of time, build rapidly lid and take back experiment lab analysis, when can obtain this
Interior soil respiration rates.
Sealed gas chamber method: sealed gas chamber method includes gas chromatography and infrared CO2 analytic process two kinds.This method is
Tubular container one end of one bottomless uncovered is inserted in soil, in after a while stably after, add a cover,
Extract gaseous sample at a certain time interval with a needle-like adapter to enter in Dewar vessel, use gas chromatogram
Instrument or infrared spectrum analyser measure the concentration of wherein CO2, calculate the speed of CO2 discharge.
Both approaches is respectively present weak point, is mainly reflected in: (1) soda solution grouting changes the micro-gas in ground
As condition；(2) airtight method sampling interval can not be too short；Require supplementation with same volume air；(3) airtight method need to be adopted
Sample pump, measures the air pressure change that causes because of air-flow of environment and produces impact；(4) being limited in that of soda solution grouting
The precision measured is undesirable, and in the case of soil respiration rates is low, the result of mensuration is higher than actual value.?
In the case of soil respiration rates height, measurement result is more on the low side than actual value.
Summary of the invention
The technical problem existed based on background technology, the present invention proposes a kind of portable soil respiration measurement
System, has good Monitoring Performance, it is simple to carry, and monitors accurate feature, solves existing soil respiration
Measure soil is the most disturbed, field measurement not Portable belt and problem costly.
The present invention provides following technical scheme: the system of a kind of portable soil respiration measurement, surveys including data
Amount and record meter reading, the bottom of described DATA REASONING and record meter reading is by transmission line and infrared CO2 analyser
Top connect, the other end of this infrared CO2 analyser runs through the roof of respiratory chamber, and extends to respiratory chamber
Inside, the junction, top of described infrared CO2 analyser and respiratory chamber is socketed with fixing seat, this fixing seat
Be fixed on the top middle portion of respiratory chamber by screw, described respiratory chamber be internally provided with solar radiation sensor
Lay respectively at inside respiratory chamber infrared with this solar radiation sensor of Temperature Humidity Sensor and Temperature Humidity Sensor
The both sides of CO2 analyser, described infrared CO2 analyser, Temperature Humidity Sensor and solar radiation sensor all with
DATA REASONING and record meter reading are electrically connected with.
Preferably, described respiratory chamber is silver color.
Preferably, described respiratory chamber is nontransparent formula or transparent mode, and respiratory chamber is closed or open
Preferably, the sample frequency of described DATA REASONING and record meter reading is 1 second 30 hours, DATA REASONING
And record meter reading is rechargeable type or battery type.
Preferably, described DATA REASONING and record meter reading be internally provided with electronic display, and electronical display
The bottom data of screen is measured and the surface configuration of record meter reading has adjustment button and shift knob.
The invention provides the system of a kind of portable soil respiration measurement, beneficial effect has:
(1) respiratory chamber uses closed nontransparent, and respiratory chamber is silver color aluminum alloy material, reduces radiant heat
Absorb, and improve the heat radiation of respiratory chamber, decrease the use alkali liquor impact on ground microclimate, use too
Sun radiation sensor, Temperature Humidity Sensor and infrared CO2 analyser, facilitate the detection to soil, reduces
During soil respiration rates difference, test result and actual value error, at utmost avoid " the temperature of respiratory chamber
Room effect ", measurement environment is wild environment, without soil disturbance, does not affect ground microclimate condition.
(2) respiratory chamber uses closed nontransparent silver color aluminum alloy material, infrared CO2 analyser diffusion type
Measure and analyze, decrease sampling pump, alleviate the weight of system, facilitate and carry, meanwhile, solar radiation
Sensor, Temperature Humidity Sensor and infrared CO2 analyser are respectively positioned on the inside of respiratory chamber so that system is not subject to
The testing result during air pressure change caused because of air-flow.
(3) the infrared CO2 analyser measured for ecology, single beam dual wavelength infrared technique, measure accurately,
Real-time data transmission record.Automatic temperature compensation function, long-time stability (skew) are less than for ± 2%/year
(less than ± 40ppm in the case of 2000ppm full scale)
(4) this system uses respiratory chamber, transmission line and DATA REASONING and record meter reading to constitute, not only system and device
Few, the device of use is small and exquisite, is also convenient for carrying, and is suitable for various long-distance field measuremenies.
Accompanying drawing explanation
Fig. 1 is present system structural representation；
Fig. 2 is solar radiation sensor schematic diagram of the present invention；
Fig. 3 is the elevational schematic view of this respiratory chamber.
In figure: 1 DATA REASONING and record meter reading, 2 transmission lines, 3 infrared CO2 analysers, 4 respiratory chambers, 5
Fixing seat, 6 solar radiation sensors, 7 Temperature Humidity Sensors.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
As Figure 1-3, Fig. 1 is present system structural representation；Fig. 2 is that solar radiation of the present invention passes
Sensor schematic diagram；Fig. 3 is the elevational schematic view of this respiratory chamber.
Referring to Fig. 1-3, the present invention provides a kind of technical scheme: the system of a kind of portable soil respiration measurement,
Including DATA REASONING and record meter reading 1, for measuring condition arrange, data acquisition and record, DATA REASONING and
Record meter reading 1 sample frequency be 1 second 30 hours, DATA REASONING and record meter reading 1 be rechargeable type or
Being internally provided with under electronic display, and electronic display of battery type, DATA REASONING and record meter reading 1
The surface configuration of side's DATA REASONING and record meter reading 1 has adjustment button and shift knob, DATA REASONING and record
The bottom of meter reading 1 is connected with the top of infrared CO2 analyser 3 by transmission line 2, infrared CO2 analyser 3
Measuring for CO2, temperature and barometric surveying, the other end of this infrared CO2 analyser 3 runs through respiratory chamber 4
Roof, and extend to the inside of respiratory chamber 4, respiratory chamber 4 is silver color, respiratory chamber 4 be nontransparent formula or
Transparent mode, and respiratory chamber 4 is closed or open, is used for controlling sample to be tested soil environment, it is to avoid its
The interference of his condition, infrared CO2 analyser 3 is socketed with fixing seat 5 with the junction, top of respiratory chamber 4, should
Fixing seat 5 is fixed on the top middle portion of respiratory chamber 4 by screw, respiratory chamber 4 be internally provided with sun spoke
Penetrate sensor 6 and this solar radiation sensor 6 of Temperature Humidity Sensor 7 and Temperature Humidity Sensor 7 lays respectively at
The both sides of the internal infrared CO2 analyser 3 of respiratory chamber 4, infrared CO2 analyser 3, Temperature Humidity Sensor 7 and
Solar radiation sensor 6 is all electrically connected with DATA REASONING and record meter reading 1, and respiratory chamber 4 uses closed
Nontransparent, respiratory chamber 4 is silver color aluminum alloy material, reduces radiant heat absorbent, and improves respiratory chamber 4
Heat radiation, decrease use the alkali liquor impact on ground microclimate, use solar radiation sensor 6, humiture
Sensor 7 and infrared CO2 analyser 3, facilitate the detection to soil, reduces soil respiration rates different
Time, test result and actual value error, at utmost avoid " greenhouse effect " of respiratory chamber 4, measure environment
For wild environment, without soil disturbance, not affecting ground microclimate condition, respiratory chamber 4 uses closed non-
Bright silver color aluminum alloy material, infrared CO2 analyser 3 diffusion type is measured and is analyzed, decreases sampling pump, subtract
The light weight of system, facilitates and carries, meanwhile, and solar radiation sensor 6, Temperature Humidity Sensor 7 and red
Outer CO2 analyser 3 is respectively positioned on the inside of respiratory chamber 4 so that system is not by the air pressure change caused because of air-flow
Time testing result, for ecology measure infrared CO2 analyser 3, single beam dual wavelength infrared technique, survey
Amount is accurate, real-time data transmission record.Automatic temperature compensation function, long-time stability (skew) less than ±
In 2%/year (less than ± 40ppm in the case of 2000ppm full scale), this system uses respiratory chamber 4, transmission line 2
Constituting with DATA REASONING and record meter reading 1, not only system and device is few, and the device of use is small and exquisite, is also convenient for taking
Band, is suitable for various long-distance field measuremenies.
In the present invention, infrared CO2 analyser 3, solar radiation sensor 6 and humiture in respiratory chamber 4 pass
Sensor 7 by the data collected by transmission line 2 pass to DATA REASONING and record meter reading 1, DATA REASONING and
The data that record meter reading 1 receives are shown on the electronic display screen by process.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (5)
- null1. the system of a portable soil respiration measurement，Including DATA REASONING and record meter reading (1)，It is characterized in that: the bottom of described DATA REASONING and record meter reading (1) is connected with the top of infrared CO2 analyser (3) by transmission line (2)，The other end of this infrared CO2 analyser (3) runs through the roof of respiratory chamber (4)，And extend to the inside of respiratory chamber (4)，Described infrared CO2 analyser (3) is socketed with fixing seat (5) with the junction, top of respiratory chamber (4)，This fixing seat (5) is fixed on the top middle portion of respiratory chamber (4) by screw，Described respiratory chamber (4) be internally provided with solar radiation sensor (6) and Temperature Humidity Sensor (7) this solar radiation sensor (6) and Temperature Humidity Sensor (7) lays respectively at the both sides of the internal infrared CO2 analyser (3) of respiratory chamber (4)，Described infrared CO2 analyser (3)、Temperature Humidity Sensor (7) and solar radiation sensor (6) are all electrically connected with DATA REASONING and record meter reading (1).
- The system of a kind of portable soil respiration measurement the most according to claim 1, it is characterised in that: described respiratory chamber (4) is silver color.
- The system of a kind of portable soil respiration measurement the most according to claim 1, it is characterised in that: described respiratory chamber (4) is nontransparent formula or transparent mode, and respiratory chamber (4) is closed or open.
- The system of a kind of portable soil respiration measurement the most according to claim 1, it is characterized in that: the sample frequency of described DATA REASONING and record meter reading (1) is 1 second 30 hours, DATA REASONING and record meter reading (1) are rechargeable type or battery type.
- The system of a kind of portable soil respiration measurement the most according to claim 1, it is characterized in that: described DATA REASONING and record meter reading (1) be internally provided with electronic display, and the bottom data of electronic display is measured and the surface configuration of record meter reading (1) has adjustment button and shift knob.
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| CN201610548405.8A CN105938091A (en) | 2016-07-13 | 2016-07-13 | Portable soil respiration measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515292A (en) * | 2017-09-21 | 2017-12-26 | 安徽理工大学 | A kind of simple soil respiration rates in-situ determination method |
| RU2660380C1 (en) * | 2017-05-16 | 2018-07-06 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт агрохимии имени Д.Н. Прянишникова" (ФГБНУ "ВНИИ агрохимии") | Portable soil respirometer for the co2 emission into atmosphere monitoring |
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| US20030136174A1 (en) * | 2002-01-18 | 2003-07-24 | Edwards Nelson T. | Automated soil gas monitoring chamber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2660380C1 (en) * | 2017-05-16 | 2018-07-06 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт агрохимии имени Д.Н. Прянишникова" (ФГБНУ "ВНИИ агрохимии") | Portable soil respirometer for the co2 emission into atmosphere monitoring |
| CN107515292A (en) * | 2017-09-21 | 2017-12-26 | 安徽理工大学 | A kind of simple soil respiration rates in-situ determination method |
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