CN106769271A - A kind of soil respiration automated collection systems - Google Patents
A kind of soil respiration automated collection systems Download PDFInfo
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- CN106769271A CN106769271A CN201710085470.6A CN201710085470A CN106769271A CN 106769271 A CN106769271 A CN 106769271A CN 201710085470 A CN201710085470 A CN 201710085470A CN 106769271 A CN106769271 A CN 106769271A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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Abstract
The invention discloses a kind of soil respiration automated collection systems, including pump bowl and operation cabinet, the pump bowl top is provided with air inlet, side is provided with gas outlet, bottom for ease of insert soil opening, vavuum pump is provided with the operation cabinet, Storage Time in Gas Collecting Bag and the Drexel bottle equipped with soda lime, the air inlet of the vavuum pump and gas outlet gas outlet respectively with Drexel bottle and the air inlet UNICOM of pump bowl, the air inlet of the vavuum pump and gas outlet gas outlet respectively with pump bowl and Storage Time in Gas Collecting Bag UNICOM, the gas outlet of the pump bowl and the air inlet UNICOM of Drexel bottle.Acquisition system of the invention can at all remove the interference of carbon in atmosphere, and soil layer can be avoided to be disturbed by serious, and its measured value can exactly represent the state of original soil layer.
Description
Technical field
The invention belongs to soil gas collection field, and in particular to a kind of soil respiration automated collection systems.
Background technology
It is well known that the Earth climate system change with climate warming as principal character is undisputable fact.In global gas
Under the background that time warms, Qinghai-xizang Plateau Region ever-frozen ground is presented different degrees of degeneration, and Permafrost Area may be caused a large amount of
Soil organic matter decompose in the form of greenhouse gases（CO2、CH4）Into air, positive feedback effect is played to climate change.It is many
The greenhouse gases of year permafrost region release decompose organic matter process essentially from plant respiration and microorganism.In global warming
Under background, vegetation global net ecosystem carbon exchange gradually strengthens, and temperature raises and causes to freeze to store having in Permafrost Area
Machine carbon is easy to be decomposed by the microorganisms utilization, therefore Permafrost Area is likely to be converged by carbon and turns to carbon source.Therefore, for many years in recent years
The greenhouse gases of permafrost region soil release receive much concern, and are also one of important content of climate change research.
Permafrost Degeneration is mainly reflected in temperature and raises and thermokarst process, and such as heat melts erosion and thaw slumping, and
These processes can accelerate the decomposition of old carbon directly by old carbon in air.Measuring method such as gas phase traditional at present
The methods such as chromatography, dynamic air chamber can direct measurement soil surface greenhouse gases rate of release, but release can not be analyzed
Carbon source.Due to14C experienced radiative decay, δ14C can reflect the feelings that old carbon is decomposed as a time mark
Condition；δ13C then with photosynthesis, soil moisture and CO2Concentration is related, therefore the gas discharged by field acquisition different depth soil
Body, in lab analysis gas carbon isotope δ14C and δ13C features, it may be determined that new carbon and old carbon during Permafrost Degeneration
Contribution to greenhouse gases release.
In recent years, most of research employs various soil gas sampling modes, and such as earth's surface intubation takes gas, or digs in advance
Vertical shaft section is taken, then sample apparatus are placed into the mode in gas well to carry out gas sample.But cannot remove at all big
The interference of carbon in gas, and soil layer receives serious interference, and its measured value can not exactly represent original soil layer state.
The content of the invention
In view of this, it is an object of the invention to provide a kind of soil respiration automated collection systems, it is therefore intended that overcome
There is the drawbacks described above of soil gas harvester, can as far as possible reduce destruction and disturbance to soil horizon.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of soil respiration automated collection systems, including pump bowl and operation cabinet, the pump bowl top are provided with air inlet, side
Face is provided with gas outlet, bottom for ease of inserting the opening of soil, the air inlet of the vavuum pump and gas outlet respectively with gas washing
The gas outlet of bottle and the air inlet UNICOM of pump bowl；In gas sampling system, the air inlet of the vavuum pump and gas outlet are divided
The not gas outlet with pump bowl and Storage Time in Gas Collecting Bag UNICOM, the gas outlet of the pump bowl and the air inlet UNICOM of Drexel bottle.
Further, it is provided with the first electromagnetism on the air inlet of the vavuum pump and the pipeline of the gas outlet UNICOM of pump bowl
Valve, the second magnetic valve, the vavuum pump are provided with the air inlet of the vavuum pump and the pipeline of the gas outlet UNICOM of Drexel bottle
Gas outlet and pump bowl air inlet UNICOM pipeline on be provided with the 3rd magnetic valve, the gas outlet of the vavuum pump and gas
The 4th magnetic valve, the gas outlet of the pump bowl and the air inlet of Drexel bottle are provided with the pipeline of the air inlet UNICOM of collection bag
The 5th magnetic valve is provided with the pipeline of UNICOM.
Further, solar electric power supply system is additionally provided with the operating room, the solar electric power supply system includes setting
Solar panel and the charging accumulator jar being arranged on inside operating room at the top of operating room.
Further, it is additionally provided with the operating room for controlling the master switch of whole acquisition system, for controlling CO2 to inhale
The gas washing key switch of receipts system, the gas production key switch of gas sampling system is controlled and for showing that CO2 absorbs system for control
The time display of system operating time.
Further, the control module for controlling magnetic valve and vavuum pump action is additionally provided with the operating room.
Further, the plastic hose end being connected with Storage Time in Gas Collecting Bag is additionally provided with quick coupling.
The beneficial effects of the present invention are：Acquisition system of the invention can at all remove the interference of carbon in atmosphere, and
Soil layer can be avoided to be disturbed by serious, its measured value can exactly represent the state of original soil layer.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is the connection diagram of pipe-line system of the present invention；
Fig. 3 control principle drawing of the invention.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
A kind of soil respiration automated collection systems, the acquisition system includes pump bowl II and operation cabinet I, the pump bowl
Top is provided with air inlet 6, side and is provided with gas outlet 5, bottom for ease of inserting setting in the opening of soil, the operation cabinet
There are vavuum pump 15, Storage Time in Gas Collecting Bag 17 and the Drexel bottle 13 equipped with soda lime 12.In CO2 absorption systems, the vavuum pump
Air inlet 2 and gas outlet 1 gas outlet respectively with Drexel bottle and the air inlet UNICOM of pump bowl；In gas sampling system,
The air inlet 2 of the vavuum pump and gas outlet 1 gas outlet respectively with pump bowl and Storage Time in Gas Collecting Bag UNICOM, the pump bowl
Gas outlet and the air inlet UNICOM of Drexel bottle.The gas outlet of the pump bowl and the air inlet UNICOM of Drexel bottle.
In the present embodiment, the first electricity is provided with the air inlet of the vavuum pump and the pipeline of the gas outlet UNICOM of pump bowl
Magnet valve 7, the second magnetic valve 8 is provided with the air inlet of the vavuum pump and the pipeline of the gas outlet UNICOM of Drexel bottle, described true
The 3rd magnetic valve 9, the gas outlet of the vavuum pump are provided with the gas outlet of empty pump and the pipeline of the air inlet UNICOM of pump bowl
The 4th magnetic valve 10, the gas outlet of the pump bowl and Drexel bottle are provided with the pipeline of the air inlet UNICOM of Storage Time in Gas Collecting Bag
Air inlet UNICOM pipeline on be provided with the 5th magnetic valve 11.
In the present embodiment, solar electric power supply system is additionally provided with the operating room, the solar electric power supply system includes
The solar panel 3 being arranged at the top of operating room and the charging accumulator jar 16 being arranged on inside operating room.
In the present embodiment, be additionally provided with the operating room for control whole acquisition system master switch, for controlling
The gas washing key switch 20 of CO2 absorption systems, for control gas sampling system gas production key switch 21 and for show CO2 inhale
Receive the time display 22 of system operating time.
In the present embodiment, the control module for controlling magnetic valve and vavuum pump action is additionally provided with the operating room,
The plastic hose end being connected with Storage Time in Gas Collecting Bag is additionally provided with quick coupling 18, in the soil respiration automated collection systems
Various UNICOM's pipelines be attached using plastic hose 4.
The soil respiration automated collection systems of the present embodiment are also configured with the soft device of soil, and the soft device of soil is and takes out
The supporting iron ring of inflator, with certain height.Because pump bowl cannot be directly placed into soil, must first by by with pump bowl
The soft device of supporting soil is pounded into soil certain depth, is taken out iron ring and is placed bottomless seal closure cylinder again.
The operation cabinet of the present embodiment is integrated with CO2 absorption systems, gas sampling system, control circuit and control panel.Its
In, it is connected by plastic hose 4 between CO2 absorption systems, gas sampling system part in switch board.
In CO2 absorption systems in the present embodiment, gas flows through the electromagnetism in operation cabinet from the gas outlet of pump bowl
Valve 11, into Drexel bottle, absorption to CO2 is reached in Drexel bottle by placing soda lime, and then gas sequentially passes through electromagnetism
The air inlet of valve 8, vavuum pump and magnetic valve 9, pump bowl；While electronic time control electrical equipment is to its operating time timing, by chain of command
The time display display operating time on plate.When gathering gas in gas sampling system, air-flow is by vavuum pump, magnetic valve
Enter Storage Time in Gas Collecting Bag after 10.
The use step of the soil respiration automatic data collection system of the present embodiment is：
Step one：With the soft a piece of land of mellow soil device to ensure that pump bowl can be inserted smoothly in soil and is not damaged by,
Pump bowl 15 centimetres of soil of insertion is deep.
Step 2：Pump bowl and operation cabinet, the gas outlet 5 of pump bowl and the air inlet of operation cabinet are connected by plastic hose 4
Mouth 2 is connected, and the gas outlet 1 of operation cabinet is connected with the air inlet 6 of pump bowl.
Step 3：Switch board is opened, the master switch 20 of the whole soil automatic collecting system of control is opened, work is initially entered
Make state.
Step 4：Gas washing key 20 is pressed, magnetic valve 8,9,11 is opened, kept clear, while automatic timing unit starts meter
When, show the working time in time showing panel 22.The function of removing the original air carbon dioxide in pump bowl top starts work
Make.To eliminate the influence of carbon dioxide in the own air in pump bowl top, the headspace for drawing pump bowl enters operation cabinet, takes out
The air of inflator is entered the air inlet 2 of operation cabinet by gas outlet 5 by plastic hose, and entering CO2 via magnetic valve 11 absorbs dress
Put（It is placed with the plastic bottle 13 of soda lime 12）.For the CO2 flowed through in gas is sufficiently absorbed, in CO2 absorption plants
Original flow enters from long tube, and the gas for removing CO2 flows out from short tube.The gas of CO2 is removed via magnetic valve 8, vavuum pump, electromagnetism
Flowed out from the gas outlet 1 of operation cabinet after valve 9, the air inlet 6 of pump bowl is flowed into via plastic hose 4, the gas for removing CO2 enters
To in pump bowl II.In this step, the air for removing CO2 is entered into pump bowl with the headspace reached to pump bowl again
One purpose of wash cycles of row, it is ensured that air pressure is consistent substantially with ambient pressure in pump bowl.Note observing time
Display panel 22, after being shown as 8-10 minutes, has not had CO2 in the headspace of pump bowl, gas washing key 20 is pressed again, this
Function stop works, and autotimer is also stopped, the time zero of time showing panel 22.
Step 5：After spending 1 minute, after vegetation and soil discharge CO2, gas production key is pressed for the first time, be loaded with soil one
The gas of CO2 of depthkeeping degree release flows out from the gas outlet 5 of pump bowl II, via plastic hose enter magnetic valve 7, vavuum pump,
Magnetic valve 10, flows out from quick coupling 18, removes the air in pipeline, presses gas production key for the second time after a while, it is stopped.Hurry up
Speed connection quick coupling 18 and Storage Time in Gas Collecting Bag 17, gas collecting is carried out by pressing collection key.When gas collecting is carried out, first
The gas washing link of 2 ~ 3 times is carried out to Storage Time in Gas Collecting Bag 17, original air in Storage Time in Gas Collecting Bag is driven away.After gas washing 2 ~ 3 times, i.e.,
Formal gas collecting can be carried out.Repeat said process three times.
Step 6：The plastic hose of general supply, dismounting attended operation cabinet I and pump bowl II is closed, and sorting placement is good, closes
Closed operation cabinet front/rear door.
Step 7：The indoor gas to Storage Time in Gas Collecting Bag carries out isotope analysis to analyze new carbon, old carbon to soil respiration
Contribution.
Control electricity routing power in the present embodiment, control core are constituted.Power supply includes solar panel, charging electric power storage
Bottle, control module.Solar panel, charging accumulator jar provide electricity for whole device；12V voltage conversions are by DC-DC module
The operating voltage of 5V.Solar panel is provided with operation cabinet top, when gas collecting is carried out, can also be filled simultaneously
Electric process, has saved the energy.Master switch, the gas washing key of control CO2 absorption systems and control gas collecting are equipped with control panel
The gas production key of system, also one time display that can show the CO2 absorption system operating times.
The CO2 absorption systems of the present embodiment are integrated in one piece with CO2 acquisition systems, and the two is realized by control core
To two controls of various process.
In the present embodiment, when gathering the gas of soil certain depth, without drilling through a soil profile in advance, can be directly sharp
With the soft device mellow soil of soil, and pump bowl inserted into soil, the real disturbance avoided to soil horizon, it is ensured that
The accuracy of the data of collection.
The present embodiment is charged 12V photovoltaic conversions again by control module for 5V works by solar energy to 12 volts of accumulator jars
Voltage, enables the invention to normal development field work in the wild, and facilitate carries out SOIL GAS in In Permafrost Regions of Qinghai-xizang Plateau
The collection of body.
The present embodiment has all used vavuum pump in CO2 absorption systems and CO2 acquisition systems, in CO2 absorption systems
Accelerate to enter bottomless seal closure cylinder headspace the speed of CO2 absorption plants using vavuum pump, reduce the sampling time；In CO2
Increase gathered gas flow in acquisition system using vavuum pump Automatic-bleeding, make it there are enough gas flows to fully meet
The laboratory measurement in later stage.
The system of the present embodiment can gather the greenhouse gases that certain depth of soil soil respiration goes out, and then by isotope
The new carbon of research and application, contribution of the old carbon to soil respiration.Timer and time display panel are provided with switch board simultaneously, can be right
CO2 absorption systems carry out accurate time control, it is to avoid extremely frigid zones electronic equipments go wrong cannot timing situation.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (6)
1. a kind of soil respiration automated collection systems, it is characterised in that：The acquisition system includes pump bowl and operation cabinet, described
Pump bowl top be provided with air inlet, side be provided with gas outlet, bottom for ease of insert soil opening, in the operation cabinet
Vavuum pump, Storage Time in Gas Collecting Bag and the Drexel bottle equipped with soda lime are provided with, the air inlet of the vavuum pump and gas outlet are distinguished
Gas outlet and the air inlet UNICOM of pump bowl with Drexel bottle, the air inlet of the vavuum pump and gas outlet respectively with pump bowl
Gas outlet and Storage Time in Gas Collecting Bag UNICOM, the gas outlet of the pump bowl and the air inlet UNICOM of Drexel bottle.
2. a kind of soil respiration automated collection systems according to claim 1, it is characterised in that：The air inlet of the vavuum pump
The first magnetic valve, the air inlet of the vavuum pump and going out for Drexel bottle are provided with mouth and the pipeline of the gas outlet UNICOM of pump bowl
The pipeline of the second magnetic valve, the gas outlet of the vavuum pump and the air inlet UNICOM of pump bowl is provided with the pipeline of gas port UNICOM
On be provided with the 3rd magnetic valve, be provided with the 4th electromagnetism on the gas outlet of the vavuum pump and the pipeline of Storage Time in Gas Collecting Bag UNICOM
Valve, the 5th magnetic valve is provided with the gas outlet of the pump bowl and the pipeline of the air inlet UNICOM of Drexel bottle.
3. a kind of soil respiration automated collection systems according to claim 1, it is characterised in that：Also set on the operating room
Solar electric power supply system is equipped with, the solar electric power supply system includes being arranged at solar panel and the setting at the top of operating room
Charging accumulator jar inside operating room.
4. a kind of soil respiration automated collection systems according to claim 1, it is characterised in that：Also set in the operating room
The gas washing key switch for controlling the master switch of whole acquisition system, for controlling CO2 absorption systems is equipped with, for control
The gas production key switch of gas sampling system and the time display for showing the CO2 absorption system operating times.
5. a kind of soil respiration automated collection systems according to claim 2, it is characterised in that：Also set in the operating room
It is equipped with the control module for controlling magnetic valve and vavuum pump action.
6. a kind of soil respiration automated collection systems according to claim 1, it is characterised in that：Described and Storage Time in Gas Collecting Bag
The plastic hose end of connection is additionally provided with quick coupling.
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| CN201710085470.6A CN106769271A (en) | 2017-02-17 | 2017-02-17 | A kind of soil respiration automated collection systems |
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| CN201710085470.6A CN106769271A (en) | 2017-02-17 | 2017-02-17 | A kind of soil respiration automated collection systems |
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| CN201710085470.6A Pending CN106769271A (en) | 2017-02-17 | 2017-02-17 | A kind of soil respiration automated collection systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110231459A (en) * | 2019-07-16 | 2019-09-13 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | A kind of detection device of soil discharge gas isotope |
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Inventor after: Mou Cuicui Inventor after: Lei Pengsi Inventor after: Zhao Qian Inventor before: Mou Cuicui Inventor before: Zhao Qian |
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