CN205982077U - Former position -finding device of three interface carbon dioxide of meadow ecosystem exchange flux - Google Patents
Former position -finding device of three interface carbon dioxide of meadow ecosystem exchange flux Download PDFInfo
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- CN205982077U CN205982077U CN201620875730.0U CN201620875730U CN205982077U CN 205982077 U CN205982077 U CN 205982077U CN 201620875730 U CN201620875730 U CN 201620875730U CN 205982077 U CN205982077 U CN 205982077U
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Abstract
The utility model discloses a former position -finding device of three interface carbon dioxide of meadow ecosystem exchange flux, including base and vasculum, the top surface of base is provided with the round recess, be provided with the plastic sealing washer in the recess, the bottom of vasculum cartridge hermetcally is in in the recess, the vasculum adopts the transparent material preparation to form, and its lateral wall and top are provided with a plurality of reinforcement respectively, be provided with the sampling pipe in the vasculum, the top that the sampling pipe pierced through the vasculum is connected to the aspiration pump, the aspiration pump is connected to infrared gas analyser through the breather pipe, the sampling pipe is located the part of vasculum and has seted up a plurality of inlet ports, and a plurality of inlet ports are the heliciform and distribute, former position -finding device still disposes an opaque outer container. The device has simple structure, processing ease, the leakproofness is good, stability is high, the practicality is strong, convenient and reliable characteristics, is fit for the dynamic condition that meadow ecosystem carbon flux was surveyd to long -term normal position.
Description
Technical field
This utility model is related to a kind of in-site detecting device of Grassland ecosystems three interface carbon dioxide exchange flux.
Background technology
Since the industrial revolution, due to the sharp increase of population, Fossil fuel a large amount of using and soil irrational utilization
The original Carbon balance of ecosystem is led to be destroyed Deng anthropic factor, with CO2Greenhouse gas concentration change for main component
Speed is accelerated, and then causes Global climate change.At present, generally believe that climate warming is the knot that global carbon changes
Really, estimate that terrestrial ecosystems carbon absorption amount and its change in time and space can provide important ginseng for estimation range climate change etc. exactly
Examine.CO between relevant ground-gas-vegetation2Migration rule and source and the research evaluation etc. converging become focus of attention in the world and ask
Topic.Soil is maximum land carbon storehouse on the earth, is CO in air2Important source and remittance, the whole world there are about the carbon of 1400-1500gt
Be stored in the form of organic in soil, the Carbon stock that there are about 500-700gt in vegetation, there are about the Carbon stock of 750gt in
In air.CO is carried out by processes such as plant photosynthesis, plant respiration and soil respirations2Circulation between three interfaces and flowing.
CO in air2The change of concentration depends primarily on the fluctuation of carbon exchange flux between each carbon storehouse participating in Carbon cycle.
In the world's ecosystems, Grassland ecosystems account for the 30% of land surface.Meadow is distributed as on the earth
Wide vegetation pattern, accounts for the 32% of whole world natural vegetation, is the important component part of terrestrial ecosystems.Grassland ecosystems
Organic C storage accounts for the 34% of terrestrial ecosystems carbon storehouse gross reserves, and the organic C storage of wherein grassland soil accounts for meadow total carbon storage
90%.Affected by geographical position, amblent air temperature and the factors such as artificial, CO between grassland vegetation ecosystem and air2Hand over
Change flux and there is very high Spatial Variations and temporal change characteristic, the Carbon budget situation of Grassland ecosystems is adjusted to Global Carbon
Play an important role.Therefore, the minor variations in Grassland ecosystems soil organic matter (SOC) storehouse all will cause CO in air2
The significant changes of content, play key player in Global climate change.Nearly 4,000,000 km of China's grassland area2, account for territory
The 40% of the gross area, it is the maximum terrestrial ecosystems of China's area, study Grassland ecosystems CO2Concentration between three interfaces
Dynamic change, be by the most basic method that the Carbon budget of terrestrial ecosystems is adjusted, for accurate estimation grassland ecology system
Carbon exchange amount between system and air, correctly evaluates status in global carbon for the Grassland ecosystems and effect and formulation section
Rational system of herding of prohibiting provides scientific basis, has reality and profound significance for human knowledge and control whole world change.
At present, in the assay method about Grassland ecosystems vegetation-air-soil three interface carbon dioxide flux, case
It is a kind of traditional and conventional method of comparison that formula method+chromatography of gases measures, and its operation principle is to be placed in the casing of particular size
Have certain surface amass soil or vegetation on, isolation casing inside and outside gas free exchange after, in mensure case gas with
The intensity of time change, and finally obtain the Flux of tested gas.Box method includes two kinds of static and dynamic case, the two
Difference is that the former needs to remove casing above object of study it is impossible to carry out Continuous Observation after mensure terminates；And move
The top of state casing can automatically open up, and casing internal and external environment can be made to be consistent it is not necessary to remove casing, it is possible to achieve long-term and
Continuous Observation.Grassland ecosystems monitoring mainly adopts closed chamber method, brings back laboratory with after syringe collection gaseous sample, uses
Chromatography of gases measures gas concentration lwevel, and this method can record trace between Soil Interface or vegetation interface and air in an ideal case
The Flux of gas.This box method is simple to operate, is widely used in vegetation and the mensure of earth's surface carbon emission flux at present, but
Airtight static chamber has disturbance to observation, and many factors all can produce impact to the measurement of gas exchange flux, there is certain office
Sex-limited.There are some drawbacks in existing airtight static chamber, cause certain disturbance and destruction to gas in case and environment, for example, adopt
During measuring ecosystem carbon dioxide exchange with glass box, solar radiation can make air themperature in closed box rise quickly,
It is difficult to control to；In addition, generally between base and casing by the way of water-stop, this is for monitoring wetlands ecosystems
It is easier to realize, water source can be lake water or bog water in wetland etc., but (water is lacked for Grassland ecosystems
Source) for, undoubtedly increased difficulty and the workload of test sample；Further, institute's test sample product need to take back laboratory from field and enter
Row analysis it is impossible in real-time reflection system carbon dioxide flows real conditions, the accuracy of its measurement result is slightly worse.
Content of the invention
In view of this, this utility model provides a kind of original position of Grassland ecosystems three interface carbon dioxide exchange flux
Measure device, this device has the spy that structure is simple, processing ease, good airproof performance, stability are high, practical, convenient and reliable
Point, is suitable for the current intelligence of long-term in-situ observation Grassland ecosystems Carbon flux.
In order to realize above-mentioned purpose, this utility model employs following technical scheme：
A kind of in-site detecting device of Grassland ecosystems three interface carbon dioxide exchange flux, divides including bottom and top
Base that Wei be not uncovered and the vasculum of bottom open top end closing, wherein, the top end surface of described base is provided with a circle
Groove, is provided with plastic cement sealing ring in described groove, be inserted in described groove to the bottom end seal of described vasculum；Described adopt
Header adopts transparent material preparation to be formed, and the side wall of described vasculum and top are respectively arranged with multiple reinforcing strip, described
It is provided with sampling tube, the top that described sampling tube penetrates described vasculum stretches out connection to air pump, described in vasculum
Air pump is connected to infrared gas analyser by a breather；The part being located in described vasculum in described sampling tube opens up
There are multiple air inlets, the plurality of air inlet is distributed on the side wall of described sampling tube in the shape of a spiral；Described in-site detecting device
Also configure that an opaque outer container, described outer container is used for being located at the described base after mutually assembling and described vasculum.
Preferably, the tip edge of described base is provided with multiple fasteners, and the bottom edge of described vasculum is provided with
Correspond the raised fixed block in described fastener；Or, the bottom edge of described vasculum is provided with multiple fasteners,
The tip edge of described base is provided with the raised fixed block corresponding in described fastener；The bottom end seal of described vasculum
When being inserted in described groove, described fastener is clasped with described projection fixed block.
Preferably, it is provided with multiple first magnetic components in described groove, the bottom edge of described vasculum is provided with one
One the second magnetic component corresponding to described first magnetic component, described first magnetic component and described second magnetic component pass through
Magnetic force attracting so that described vasculum and described base secure fit.
Preferably, described breather is provided with gas mixer.
Preferably, it is additionally provided with Temperature and Humidity device, gas pressure detector and Miniature electric fan in described vasculum, described
The top of vasculum offers multiple functional holes, and described functional hole is sealed by elastic rubber plug, and described functional hole is used for grafting work(
Energy connector, described function connects part includes being connected to described Temperature and Humidity device, gas pressure detector and Miniature electric fan
The holding wire of peripheral control unit.
Preferably, the plurality of functional hole includes a gas sampling hole and an air equalizer opening, described sampling tube
Penetrate the top of described vasculum by described gas sampling hole；When extracting gaseous sample from described vasculum, described air pressure
It is plugged with a syringe needle in balance pipe.
Preferably, the top in described vasculum is provided with multiple ice chests being filled with ice crystal；Also set in described vasculum
It is equipped with a heat pipe, one end of described heat pipe extends to the bottom of described vasculum, the other end penetrates the top of described vasculum
End stretches out.
Preferably, it is provided with two mini-fans in described vasculum, described two mini-fans are connected to described collection
The top of case, described two mini-fans be located at described vasculum in relative to both sides；Multiple blades of described mini-fan are in
Imbricate is arranged, and with the rotary shaft of described mini-fan as starting point, described blade is towards described mini-fan and described vasculum
Junction point tilt.
Preferably, the side wall of described base is provided with the first scale, the side wall of described vasculum was provided with for the second quarter
Degree.
Preferably, in described vasculum wherein relative to both sides be respectively arranged with a drying tube, described drying tube passes through even
Connect the inwall that arm is connected to described vasculum, described drying tube has gap with the side wall of described vasculum；Wherein, described dry
Dry pipe extends transversely in described vasculum and repeatedly comes and goes bending in a longitudinal direction, described drying tube is provided with multiple
Micropore, is filled with desiccant in described drying tube.
A kind of original position of Grassland ecosystems three interface carbon dioxide exchange flux that this utility model embodiment provides is surveyed
Determine device, this device includes base and the vasculum being hermetically inserted on base, base and vasculum pass through mechanical component phase
Mutually it is tightly connected, this device is also configured with infrared gas analyser and opaque outer container, it has, and structure is simple, operate appearance
Easily, good airproof performance, stability is high, practical, in-situ monitoring, convenient and reliable feature, is suitable for the life of long-term in-situ observation meadow
The current intelligence of state system Carbon flux.
Brief description
Fig. 1 is that the original position of the Grassland ecosystems three interface carbon dioxide exchange flux that this utility model embodiment provides is surveyed
Determine the structural representation of device；
Fig. 2 is the structural representation of the opaque outer container in this utility model embodiment.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings to this utility model
Specific embodiment be described in detail.The example of these preferred implementations is illustrated in the accompanying drawings.Institute in accompanying drawing
The embodiment of the present utility model showing and describing with reference to the accompanying drawings is merely exemplary, and this utility model is not limited to this
A little embodiments.
Here, also, it should be noted in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show and the structure closely related according to scheme of the present utility model and/or process step, and little its of the relation that eliminates
His details.
Refering to Fig. 1 and Fig. 2, Fig. 1 is that the Grassland ecosystems three interface carbon dioxide that this utility model embodiment provides is handed over
Change the structural representation of the in-site detecting device of flux, in figure base and vasculum are the state being separated from each other, some of them position
Structural member in casing is shown using the visual angle of perspective；Fig. 2 is the opaque outer container in this utility model embodiment
Structural representation.
As shown in figure 1, present embodiments providing a kind of original position of Grassland ecosystems three interface carbon dioxide exchange flux
Measure device, described in-site detecting device includes bottom and top and is respectively uncovered base 1 and the closing of bottom open top end
Vasculum 2, wherein, the top end surface of described base 1 is provided with a circle groove 3, is provided with plastic cement sealing ring in described groove 3
4, it is inserted in described groove 3 to the bottom end seal of described vasculum 2.Described vasculum 2 adopts transparent material preparation to be formed,
The side wall of described vasculum 2 and top are respectively arranged with multiple reinforcing strip 5.It is provided with sampling tube 6, institute in described vasculum 2
State sampling tube 6 and penetrate the top of described vasculum 2 and stretch out connection to air pump 7, described air pump 7 passes through a breather 8
Connect to infrared gas analyser 9.The part being located in described vasculum 2 in described sampling tube 6 offers multiple air inlets
6a, the plurality of air inlet 6a is distributed on the side wall of described sampling tube 6 in the shape of a spiral.As shown in Fig. 2 described in-site detecting dress
Put and also configure that an opaque outer container 10, described outer container 10 is also bottom open top end closing, can cover when needing and using and set
On the described base 1 and described vasculum 2 after mutual assembling.Wherein, the base 1 in the present embodiment, vasculum 2 and outer container
10 are square structure, and certainly in some other embodiments, base 1, vasculum 2 and outer container 10 can also adopt other
Shape, for example cylindric.
Wherein, transparent vasculum 2 is formed by transparent material preparation, such as the lucite after 4mm or transparent PVC
Material, reinforcing strip 5 can adopt aluminum alloy materials.Opaque outer container (camera bellows) 10 is formed by opaque material preparation, for example
Light tight film is attached on lucite or uses opaque PVC material, opaque outer container (camera bellows) 10 can also be
Using the light tight cover being covered with reflectorized material on the iron shelf of corresponding size or double-layer lint, (outer layer is white nexine is black
Color) constitute.
The in-site detecting device of Grassland ecosystems three interface carbon dioxide exchange flux as provided above, in test
When, first base 1 is inserted in the soil on meadow, in order to control base 1 to insert the depth in soil, as shown in figure 1, described
The lateral wall of base 1 is provided with the first scale 101；Then the bottom of vasculum 2 is inserted in the groove 3 of base 1 and collects grass
The gas of ground discharge, for the ease of observing the plant height in vasculum 2, as shown in figure 1, the lateral wall of described vasculum 2 sets
It is equipped with the second scale 201；Finally it is delivered to infrared gas analyser 9 by the gas that collection extracted out by air pump 7 to be tested.Surveying
During examination, outer container 10 can be covered according to actual needs, to exclude the impact of solar radiation；This device pedestal and vasculum pass through machine
Tool component seals against each other connection, reduces the difficulty of test sample and workload in the meadow environment lacking water source, and is configured with
Portable infrared gas analyser, can reflect the real conditions of carbon dioxide flows in system in real time.
Wherein, as shown in figure 1, gas mixer 11 is provided with described breather 8.Multiple air inlet 6a are in described sampling
Along genesis analysis on pipe 6, can in vasculum 2 multipoint acquisition gas, gas mixer 11 passes through air pump by multiple spot
The gas mixing of sampling is uniformly then sent through infrared gas analyser 9 and is tested, and is favorably improved measuring accuracy.Wherein, described
The shape of gas mixer 11 can be to have the arbitrary shape of hollow cavity, can be for example cuboid, square, spheroid or
Oval ball.
Wherein, as shown in figure 1, so that assembling between vasculum 2 and base 1 more firmly, better tightness, such as
Shown in Fig. 1, the tip edge of described base 1 is provided with multiple fastener 1a, and the bottom edge of described vasculum 2 is provided with one by one
Corresponding to the raised fixed block 2a of described fastener 1a, the bottom of described vasculum 2 is close when being inserted in described groove 3, described
Fastener 1a is clasped with described projection fixed block 2a.Certainly, in some other embodiments or described
The tip edge of base 1 is provided with multiple fasteners, and the bottom edge of described vasculum 2 is then provided with and corresponds in described
The raised fixed block of fastener.Wherein, as shown in figure 1, in the present embodiment, in order to improve further vasculum 2 and base 1 it
Between mutually assembling steadiness and sealing, be provided with multiple first magnetic component 1b, the bottom of described vasculum 2 in described groove 3
End margin is provided with and corresponds in the second magnetic component 2b of described first magnetic component 1b, described first magnetic component 1b and
Described second magnetic component 2b pass through magnetic force attracting so that described vasculum 2 and described base 1 secure fit；Wherein, described
The one magnetic component 1b and described second magnetic component 2b corresponding fastener 2a or raised interlaced setting of fixed block 1a respectively.
It should be noted that in some other embodiments, can be only to be respectively provided with corresponding card on vasculum 2 and base 1
Fastener 1a and raised fixed block 2a or corresponding first magnetic component 1b is only respectively provided with vasculum 2 and base 1
With the second magnetic component 2b.Certainly, fastener 1a and raised fixed block 2a and the first magnetic component 1b and second is set simultaneously
Magnetic component 2b will obtain more preferable effect.
Wherein, as shown in figure 1, being additionally provided with Temperature and Humidity device 12, gas pressure detector 13 and micro- in described vasculum 2
Type electric fan 14a, 14b, the top of described vasculum 2 offers multiple functional holes 15, and described functional hole 15 is used for inserting function
Connector, described functional hole 15 surrounding wraps up elastic rubber plug (not shown), reaches functional hole 15 and corresponding function part connects
Sealing function when tactile, described function connects part is included described Temperature and Humidity device 12, gas pressure detector 13 and micro electric
Fan 14a, 14b are connected to outside 16 signal connecting line 17.Peripheral control unit 16 is used for providing to Miniature electric fan 14a, 14b
Power supply and the parameter of display detection.
Further, as shown in figure 1, the plurality of functional hole 15 includes a gas sampling hole 15b and an air pressure
Balance pipe 15a, described sampling tube 6 penetrates the top of described vasculum 2 by described gas sampling hole 15b.From described collection
When case 2 extracts gaseous sample, it is plugged with a syringe needle in described air equalizer opening 15a, syringe needle is by vasculum 2
Portion is connected with external pressure, to keep air pressure balance when extracting gaseous sample.It should be noted that the aperture of syringe needle
Very little, it does not interfere with the gas componant within vasculum 2, in other words influence factor's very little, can ignore.
Measured in ecosystem minimum gas exchange process using vasculum 2, solar radiation can make air in closed box
Temperature rises quickly, and sampling period temperature steeply rises photosynthesis and the Repiration of impact plant, reduces the essence of test
Exactness.In order to solve this problem, in this embodiment, as shown in figure 1, the top in described vasculum 2 is provided with multiple fillings
There is the ice chest 18 of ice crystal, for lowering the temperature to the top in vasculum 2.It is additionally provided with a heat pipe 19 in described vasculum 2,
One end of described heat pipe 19 extends to the bottom of described vasculum 2, and the other end penetrates the top of described vasculum 2 to extension
Stretch, described heat pipe 19 can be by the heat derives of vasculum 2 bottom, it is to avoid the temperature in vasculum 2 steeply rises.This enforcement
It is provided with four ice chests 18 in example, be connected near four drift angles of square vasculum 2.
Further, as shown in figure 1, being provided with two mini-fans 14a, 14b in described vasculum 2, described two micro-
Type fan 14a, 14b are connected to the top of described vasculum 2, and described two mini-fan 14a, 14b are located in described vasculum
Relative both sides.In the present embodiment, two mini-fans 14a, 14b are connected on two relative drift angles of square vasculum 2.
According to as above connected mode arrange two mini-fans 14a, 14b, the flow direction improving case interior air-flow can be reached so that
Gas forms circulation on casing top, and avoids dead angle.More specifically, in the present embodiment, described mini-fan 14a, 14b
Multiple blades be in that imbricate is arranged, with the rotary shaft of described mini-fan 14a, 14b as starting point, described blade is towards described micro-
Type fan 14a, 14b are tilted with the junction point of described vasculum 2.It is to be understood that the rotation with described mini-fan 14a, 14b
Rotating shaft is starting point, and the end of blade is upturned, that is, the end of blade compared to top closer to described mini-fan 14a,
14b and the junction point of described vasculum 2, mini-fan 14a, 14b air-breathing upwards.Using blade imbricate form upwards, energy
Enough air effectively mixing in vasculum 2, form circulation in vasculum 2 and the flowing of case interior air-flow are optimized, reach and avoid
The disordered motion of case interior air-flow meets the purpose of gas fully mixing again, reduces the unrest that fan agitation causes to a great extent
Stream, the impact that the agitation avoiding fan from the angle of air current flow is discharged to gas, thus ensure that soil gas and air
The natural exchange of gas, improves the sampling precision of static chamber, improves the repeatability of test result.
When measuring under conditions of having illumination, because plant transpiration is stronger, in vasculum 2, steam is more, and this also can affect
The photosynthesis of plant and Repiration, reduce the degree of accuracy of test.In order to solve this problem, in this embodiment, as Fig. 1
Shown, in described vasculum 2 wherein relative to both sides be respectively arranged with a drying tube 20, described drying tube 20 pass through linking arm 21
It is connected to the inwall of described vasculum 2, described drying tube 20 has gap with the side wall of described vasculum 2；Wherein, described drying
Pipe 20 extends transversely in described vasculum 2 and repeatedly comes and goes bending in a longitudinal direction, and described drying tube 20 is provided with
Multiple micropore (not shown)s, are filled with desiccant in described drying tube 20.
The concrete continuous mode of as implied above in-site detecting device is described below：
In certain Grassland ecosystems, 3 0.5m of laying are high at random to grow uniform region in Steppe Plants to be determined
The base 1 of square chase (0.5m × 0.5m), and base 1 is squeezed into about 3cm in soil, it is allowed to combine closely with soil and (prevent
Only gas leakage), and made uniform with horizon rule it is ensured that base 1 steady, prevent unbalance gas leakage in use, reduce simultaneously
The interference to soil in installation process.After on base 1, transparent vasculum 2 is installed in sealing, by interior for vasculum 2 two small fans
14a, 14b open, and constantly mix the air in air chamber.First infrared spectrum analyser is opened before test and preheated, items are referred to
Mark regulates, and during mensure, connects infrared spectrum analyser 9 and is measured, carbon dioxide and humiture and atmospheric pressure value in record casing.
It is 90s that data acquisition unit is set to each sampling point minute, and every 10s records a secondary data automatically.All mensure all select fine
Bright cloudless weather, the morning 10:00—12:00 is carried out, to keep the concordance of all condition determinations and the comparable of measurement result
Property.In the case that plant does not carry out rejecting interference on the ground, infrared spectrum analyser 9 is connected to the breather 8 of vasculum 2, treats
After system stability (generally after casing is covered 0.5min), by the dioxy in the persistent period in data acquisition unit measure case body
Change carbon exchange speed.According to time serieses, ecosystem carbon net interchange can be calculated by gas concentration lwevel amount of flux
NEE, this flux includes the CO of plant photosynthesis absorption2, the CO that plant and soil respiration (root system, microorganism) discharge2, and micro- life
Thing decomposes the CO of release after the soil organism2, it is Grassland ecosystems CO2Net interchange X1 (NEE).NEE represents carbon for negative value
Absorption fix, on the occasion of the release representing carbon.After sample collecting finishes, casing buckle is opened, casing is lifted up, be transferred to
The place of air circulation, side is placed in ground or plane, when being measured again, first with said method by transparent collection
Case 2 is good with base 1 fixing seal, then covers opaque outer container (camera bellows) 10 again, gas concentration lwevel in case 2 to be collected
After stable rising, the carbon dioxide exchange speed of persistent period in mensure case body, this mensure is two after exclusion illumination
The discharge value X2 of carbon dioxide in the ecosystem aspect that the exchange capacity (i.e. exclusion plant canopy is photosynthetic) of carbonoxide obtains, that is,
(below root autotrophic respiration, microorganism are different for the total CO 2 discharge of Plant aboveground canopy autotrophic respiration and Soil Interface
Oxygen breathing and microbial decomposition soil organic matter discharge carbon dioxide) summation, be total breathing Re of ecosystem.Finally,
Casing institute cover living plant body is carried out flush with ground rejecting, simultaneously after the litter in manual removal pedestal, with glass box or secretly
The gas concentration lwevel of persistent period in the casing that case measures, the total CO 2 as Soil Interface discharges X3, can approximately recognize
For being soil respiration Rs.In addition, gross primary productivity GPP of ecosystem is equal to ecosystem net carbon exchange amount (NEE) and life
State system breathes the difference of Re.The carbon dioxide of plant canopy breathing release, equal to ecosystem respiration Re and soil respiration
Difference.Carbon dioxide flux is calculated as follows：
Wherein Fc is carbon dioxide flux (μm ol m-2·s-1)；C is carbon dioxide molal weight (_ mol mol-1), t
For the time (s)；(δ c/ δ t) is carbon dioxide mass concentration rate over time；V is the volume (m of casing3)；S is casing
Floor space (m2)；Pa is the atmospheric pressure (kPa) in casing；R is gas constant (8.3 × 10-3m3kPa mol-1K-1)；T is casing
Interior air themperature (K).
In sum, the original position of a kind of Grassland ecosystems three interface carbon dioxide exchange flux that this utility model provides
Measure device, this device has the spy that structure is simple, processing ease, good airproof performance, stability are high, practical, convenient and reliable
Point, is suitable for the current intelligence of long-term in-situ observation Grassland ecosystems Carbon flux.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or deposit between operating
In any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to
Comprising of nonexcludability, wants so that including a series of process of key elements, method, article or equipment and not only including those
Element, but also include other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element that limited by sentence "including a ..." it is not excluded that
Also there is other identical element including in the process of described key element, method, article or equipment.
The above is only the specific embodiment of the application it is noted that ordinary skill people for the art
For member, on the premise of without departing from the application principle, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (10)
1. a kind of in-site detecting device of Grassland ecosystems three interface carbon dioxide exchange flux, including bottom and top difference
For uncovered base and bottom open top end closing vasculum it is characterised in that the top end surface of described base is provided with
One circle groove, is provided with plastic cement sealing ring, is inserted in described groove to the bottom end seal of described vasculum in described groove；Institute
Stating vasculum adopts transparent material preparation to be formed, and the side wall of described vasculum and top are respectively arranged with multiple reinforcing strip,
It is provided with sampling tube, the top that described sampling tube penetrates described vasculum stretches out connection to air pump in described vasculum,
Described air pump is connected to infrared gas analyser by a breather；The part being located in described vasculum in described sampling tube
Offer multiple air inlets, the plurality of air inlet is distributed on the side wall of described sampling tube in the shape of a spiral；
Described in-site detecting device also configures that an opaque outer container, and described outer container is used for the described bottom after being located at mutual assembling
On seat and described vasculum.
2. in-site detecting device according to claim 1 it is characterised in that the tip edge of described base be provided with multiple
Fastener, the bottom edge of described vasculum is provided with the raised fixed block corresponding in described fastener；Or, described
The bottom edge of vasculum is provided with multiple fasteners, and the tip edge of described base is provided with and corresponds in described fastener
Raised fixed block；When being inserted in described groove to the bottom end seal of described vasculum, described fastener is raised solid with described
Determine block to cooperate.
3. in-site detecting device according to claim 1 and 2 is it is characterised in that be provided with multiple first in described groove
Magnetic component, the bottom edge of described vasculum is provided with and corresponds in the second magnetic component of described first magnetic component,
Described first magnetic component and described second magnetic component pass through that magnetic force is attracting so that described vasculum and described base consolidate and join
Close.
4. in-site detecting device according to claim 1 is it is characterised in that be provided with gas mixing on described breather
Device.
5. in-site detecting device according to claim 1 is it is characterised in that be additionally provided with humiture inspection in described vasculum
Survey device, gas pressure detector and Miniature electric fan, the top of described vasculum offers multiple functional holes, and described functional hole is by bullet
Property rubber stopper seal, described functional hole is used for inserting function connector, and described function connects part includes described Temperature and Humidity
Device, gas pressure detector and Miniature electric fan are connected to the signal connecting line of peripheral control unit.
6. in-site detecting device according to claim 5 is it is characterised in that the plurality of functional hole includes a gas
Thieff hatch and an air equalizer opening, described sampling tube penetrates the top of described vasculum by described gas sampling hole；From
When described vasculum extracts gaseous sample, in described air equalizer opening, it is plugged with a syringe needle.
7. in-site detecting device according to claim 1 it is characterised in that the top in described vasculum be provided with multiple
It is filled with the ice chest of ice crystal；It is additionally provided with a heat pipe, one end of described heat pipe extends to described collection in described vasculum
The bottom of case, the top that the other end penetrates described vasculum stretches out.
8. in-site detecting device according to claim 1 is it is characterised in that be provided with two miniature wind in described vasculum
Fan, described two mini-fans are connected to the top of described vasculum, and described two mini-fans are located at phase in described vasculum
To both sides；Multiple blades of described mini-fan are in that imbricate is arranged, with the rotary shaft of described mini-fan as starting point, described
Blade tilts towards the junction point of described mini-fan and described vasculum.
9. in-site detecting device according to claim 1 is it is characterised in that be provided with for the first quarter on the side wall of described base
Degree, the side wall of described vasculum is provided with the second scale.
10. in-site detecting device according to claim 1 it is characterised in that in described vasculum wherein relative to both sides
It is respectively arranged with a drying tube, described drying tube is connected to the inwall of described vasculum, described drying tube and institute by linking arm
The side wall stating vasculum has gap；Wherein, described drying tube extends transversely and in a longitudinal direction in described vasculum
Repeatedly come and go bending, described drying tube is provided with multiple micropores, in described drying tube, is filled with desiccant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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