CN100557441C - Measure terrestrial ecosystems and fix/discharge CO 2The apparatus and method of ability - Google Patents

Measure terrestrial ecosystems and fix/discharge CO 2The apparatus and method of ability Download PDF

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CN100557441C
CN100557441C CNB2005100949135A CN200510094913A CN100557441C CN 100557441 C CN100557441 C CN 100557441C CN B2005100949135 A CNB2005100949135 A CN B2005100949135A CN 200510094913 A CN200510094913 A CN 200510094913A CN 100557441 C CN100557441 C CN 100557441C
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air
transparent casing
concentration
data
mass flow
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CN1952657A (en
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丁维新
蔡祖聪
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Institute of Soil Science of CAS
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Abstract

Measure terrestrial ecosystems and fix/discharge CO 2The device of ability comprises: transparent casing, air supply and metering outfit, CO 2Concentration determination equipment, data acquistion and control system, wherein, data acquistion and control system is from CO 2The collection of concentration determination equipment enters and discharges the CO of transparent casing 2Concentration data and calculating concentration difference, the concentration difference of this concentration difference and internal system setting is compared, and control air supply and metering outfit to transparent casing air supplied flow and gather this air mass flow data according to relatively result, according to the air mass flow data of gathering with the concentration difference is calculated and CO is fixed/discharged to the storage terrestrial ecosystems 2Ability, thereby realized CO is fixed/discharged to terrestrial ecosystems 2The full-automatic dynamically METHOD FOR CONTINUOUS DETERMINATION of ability.

Description

Measure terrestrial ecosystems and fix/discharge CO 2The apparatus and method of ability
Technical field
The present invention relates to measure terrestrial ecosystems and fix/discharge CO 2The device of ability and use this device to measure terrestrial ecosystems and fix/discharge CO 2The method of ability.Especially, the present invention relates to terrestrial ecosystems and fix/discharge CO 2The full-automatic dynamically CONTINUOUS VISCOSITY MEASURING and the assay method of ability, for example marsh wetland, farmland etc. are fixed/the discharging Atmospheric CO to be applicable to the dissimilar terrestrial ecosystems of research 2Total amount, change in time and space characteristics, influence factor and mechanism.
Background technology
CO 2Be one of greenhouse gases important in the atmosphere, in global warming, play crucial effect.CO in the atmosphere 2Concentration is increased to present 367ppmv by the 280ppmv before the industrial revolution, therefore controls Atmospheric CO 2Concentration raises had become the severe challenge that the whole world faces already.That terrestrial ecosystems have is fixing/discharging CO 2Ability, the size of its storage capacity and change intensity affect CO in the atmosphere powerfully 2Concentration.CO is fixed/discharged to the research terrestrial ecosystems 2Ability become most important content and key point in the global environmental change research.
CO is fixed/discharged to the research terrestrial ecosystems 2The method of ability mainly contains two kinds at present: microclimate method and static chamber method.The microclimate method is measured terrestrial ecosystems and is fixed/discharge CO 2Need a large amount of meteorologic parameters during quantity, and these parameters exist very big spatial and temporal variation and uncertainty, make to fix/discharge CO according to the terrestrial ecosystems of these calculation of parameter acquisitions 2Ability can't reflect terrestrial ecosystems actual fixed/discharging CO truly 2Ability.The static chamber method is measured terrestrial ecosystems and is fixed/discharge CO 2During ability, need cover plant, by the fixing Atmospheric CO of analytical unit time implants photosynthesis with the organic glass case 2(contain the CO that discharges by soil respiration 2) quantity calculate terrestrial ecosystems and fix/discharge CO 2Ability.Clearly, along with photosynthesis of plant carries out, the CO of air in the case 2Concentration will very fast reduction (a few minutes), has correspondingly reduced plant by the fixing Atmospheric CO of photosynthesis 2Ability, so the result that this method is measured has underestimated terrestrial ecosystems actual fixed Atmospheric CO usually 2Ability.With regard to the whole world, still lack effective method at present and measure terrestrial ecosystems more accurately and fix/discharge CO 2Ability.
In order to overcome above-mentioned defective, the inventor has developed cover terrestrial ecosystems and has fixed/discharged CO 2The determinator of ability and assay method.The advantage of this determinator is: the one, realize online real-time continuous mensuration; The 2nd, (1 minute) measures CO in the photosynthesis of plant process raising middle flask in the short time 2Therefore the subtle change of concentration can not reduce the photosynthetic capacity of plant consumingly, thereby has reflected ecological true the fixing in land/discharging CO more accurately 2Ability.
Summary of the invention
The object of the present invention is to provide a kind of mensuration terrestrial ecosystems to fix/discharge CO 2The apparatus and method of ability overcoming the above-mentioned defective that exists in the prior art, thereby realize CO is fixed/discharged to terrestrial ecosystems 2The full-automatic dynamically METHOD FOR CONTINUOUS DETERMINATION of ability.
The invention provides the mensuration terrestrial ecosystems and fix/discharge CO 2The device of ability, this device comprises: transparent casing, air supply and metering outfit, CO 2Concentration determination equipment, data acquistion and control system,
Wherein, the glass box body is used to cover terrestrial ecosystems to be determined, is respectively arranged with air intake and air out on two relative walls of transparent casing;
The air supply is connected with the air inlet/outlet of transparent casing with metering outfit, pumping into to transparent casing or to supply air from the mode that transparent casing aspirates out air, and measures the air mass flow of the transparent casing of flowing through;
CO 2Concentration determination equipment is connected with air out with the air intake of transparent casing respectively, enters or discharge the CO of transparent casing with mensuration 2Concentration;
Data acquistion and control system is from CO 2The collection of concentration determination equipment enters and discharges the CO of transparent casing 2Concentration data and calculating concentration difference, the concentration difference of this concentration difference and internal system setting is compared, and control air supply and metering outfit to transparent casing air supplied flow and gather this air mass flow data according to relatively result, according to the air mass flow data of gathering with the concentration difference is calculated and CO is fixed/discharged to the storage terrestrial ecosystems 2Ability.
Described transparent casing can be made by material such as the glass or the organic glass etc. of printing opacity.In one embodiment of the invention, adopt organic glass to make transparent casing.The size of organic glass case is decided according to photosynthesis of plant intensity, is generally the cube of height 50cm, wide 40cm and long 40cm.For fear of because of using the organic glass case to reduce photosynthesis of plants, the light transmittance requirement of organic glass is greater than 95%.Respectively open the circular hole of diameter a 2～5cm in the upper and lower of the relative two side of organic glass case, respectively as air intake and air out.
Described air supply and metering outfit comprise pneumatic pump, transfer voltage module and air flowmeter.Wherein, the accent voltage module is regulated the speed of rotation of pneumatic pump to increase or to reduce the air mass flow in the transparent casing under the control of data acquistion and control system, air flowmeter is measured air mass flow and given data acquistion and control system with the air mass flow data transmission.
Described CO 2Concentration determination equipment comprises solenoid valve, air sampling pump and CO 2Concentration analyzer, wherein, the air sampling pump is connected with air out with the air intake of transparent casing respectively by solenoid valve, along with solenoid valve connects the air intake path and connects switching between the air out path, the air sampling valve is respectively from the air intake of transparent casing and air out extracting air sample and deliver to CO by phased manner 2In the concentration analyzer, CO 2Concentration analyzer is measured the CO that enters and discharge transparent casing 2Concentration also is transferred to data acquisition and opertaing device with concentration data.
Described data acquistion and control system comprises CPU processor and computing machine, and wherein, CPU processor organized data capture program, control program and calculation procedure, computing machine be the stocking system data of gathering and the result who obtains by system-computed then.Data acquisition program, control program and the calculation procedure of establishment are used for gathering the air CO that enters or discharge transparent casing 2Concentration, regulation and control enter transparent casing air mass flow, gather the air mass flow enter transparent casing, according to the CO that gathers 2Concentration dynamic change value and air mass flow dynamic change value are calculated terrestrial ecosystems and are fixed/discharge CO 2Quantity.
Specifically, the course of work of described CPU processor is: from CO 2Concentration analyzer collection and calculating enter and discharge the CO in the transparent casing (as organic glass box) 2The concentration difference also compares with the concentration difference of inner setting, if the absolute value of measuring the concentration difference is greater than the absolute value of setting the concentration difference, then the control of CPU processor transfers voltage module to strengthen the rotational speed of pneumatic pump, enter the air mass flow of transparent casing with increase, on the contrary, if the absolute value of measuring the concentration difference is less than the absolute value of setting concentration value, accent voltage module in control air supply of CPU processor and the metering outfit reduces the rotational speed of pneumatic pump, enter air mass flow in the transparent casing with minimizing, drop in the scope of setting the concentration difference until measuring the concentration difference; The CPU processor is gathered the air mass flow data of being measured by the air flowmeter in air supply and the metering outfit, and according to the CO of these air mass flow data and mensuration 2The CO that the concentration difference unit of account time inland basin ecosystem is fixed/discharged 2Quantity, CO is fixed/discharged to the terrestrial ecosystems day and night by adding up 2Quantity, obtain the clean fixing/discharging CO of terrestrial ecosystems whole day 2Quantity.
Device of the present invention also can comprise the temperature and humidity opertaing device.For example, described temperature and humidity opertaing device can comprise Temperature Humidity Sensor in the case, the outer Temperature Humidity Sensor of case, condensation copper pipe, water pump and accent voltage module, wherein, in the case the outer Temperature Humidity Sensor of Temperature Humidity Sensor and case respectively glass box inside and outside humiture data transmission to data acquistion and control system, system data collection and control system are calculated the dynamic change of glass box inside and outside humiture and are controlled at the rotational speed that 2 ℃ the requirement control voltage regulating module up and down of the outer atmospheric temperature of case is regulated water pump according to the temperature inside the box, enter with adjusting condensation copper pipe condensate water flow and control humiture in the transparent casing.
The present invention also provides a kind of mensuration terrestrial ecosystems to fix/discharge CO 2The method of ability, this method comprises:
A. be used in the transparent casing that is respectively arranged with air intake and air out on the relative two side and cover terrestrial ecosystems to be determined;
B. pump into from the porch of transparent casing or from the exit suction air of transparent casing and to transparent casing supply air, and measure the air mass flow of the transparent casing of flowing through;
C. measure the airborne CO that enters or discharge transparent casing from air intake from air out 2Concentration;
D. gather the CO that enters and discharge transparent casing 2Concentration data and calculating concentration difference, the concentration difference that this concentration difference and internal system are set compares, and according to relatively result's control to transparent casing air supplied flow and gather this air mass flow data, according to the air mass flow data and the CO that gather 2The concentration difference calculate and CO is fixed/discharged to the storage terrestrial ecosystems 2Ability.
This method can adopt the above-mentioned device of the present invention to finish, and wherein, step b is finished by air supply and metering outfit; Step c is by CO 2Concentration determination equipment is finished; Steps d is finished by data acquistion and control system.
Transparent casing, air intake and air out set-up mode, air supply and metering outfit, CO that this method adopts 2Concentration determination equipment, data acquistion and control system, and the optimal way of the course of work of CPU processor is as indicated above.
In addition, preferably this method also comprises the temperature in the transparent casing is controlled to be 2 ℃ up and down of box outside temperature.Described the temperature inside the box controlled step is by comprising Temperature Humidity Sensor in the case, condensation copper pipe, the temperature and humidity opertaing device of water pump and accent voltage module is finished, wherein, in the case the outer Temperature Humidity Sensor of Temperature Humidity Sensor and case respectively glass box inside and outside humiture data transmission to data acquistion and control system, system data collection and control system are calculated the dynamic change of glass box inside and outside humiture and are controlled at the rotational speed that 2 ℃ the requirement control voltage regulating module up and down of the outer atmospheric temperature of case is regulated water pump according to the temperature inside the box, enter with adjusting condensation copper pipe condensate water flow and control humiture in the transparent casing.
Description of drawings
Fig. 1 is that the present invention measures terrestrial ecosystems and fixes/discharge CO 2The structural representation of the device of ability.
Embodiment
Below with reference to accompanying drawing the present invention is launched explanation.It should be understood, however, that following embodiment only is used for the present invention is carried out exemplary explanation and is not to be used to limit the present invention.
Fig. 1 is that the present invention measures terrestrial ecosystems and fixes/discharge CO 2The structural representation of the device of ability.At first the organic glass case is covered on the plant to be determined 31, with rubber tube 20 three-way pipe 1, air flowmeter 2 (model EM1, range 0～200L/min, SENSIRION company product), pneumatic pump 3 (market purchasings, the air out 5 of flow 0～200L/min) and organic glass case 4 couples together, another interface of three-way pipe 1 connects solenoid valve 6 (market purchasing, universal), CO by plastic conduit 21 2Concentration analyzer 7 (LI840, LI6260, LI700 etc., precision reaches 1.5% or higher, U.S. genome company) and air sampling pump 8 (flow 1L/min), the air intake 9, three-way pipe 10 and the solenoid valve 6 that connect organic glass box 4 simultaneously by plastic conduit 22.Connect air flowmeter 2 and CPU processor 12 (CPU224, Siemens Company's product) with cable 23, connect solenoid valve 6 and CPU processor 12, connect CO with cable 25 with cable 24 2Concentration analyzer 8 and CPU processor 12 connect pneumatic pump 3, transfer voltage module 11 and CPU processor 12 with cable 26 simultaneously, connect CPU processor 12 and computing machine 13 (industrial, Pentium III, hard disk 80G) with USB-PPI cable 27.With rubber tube 28 condensation copper pipe in the organic glass case 4 14 (becoming the coiled pipe of high 45cm, wide 38cm and thick 2cm with the copper pipe dish of external diameter 1cm, internal diameter 0.8cm and length 100cm) is connected with water pump 15 and cooling water tank 16, connect water pump 15, transfer voltage module 17 and CPU processor 12 with cable 29, with the outer Temperature Humidity Sensor 19 of Temperature Humidity Sensor 18, case and CPU processor 12 in the organic glass box of cable 30 connections.Connect the general supply of total system, pneumatic pump 3, air flowmeter 2, CO 2Concentration analyzer 7, air sampling pump 8, CPU processor 12, computing machine 13 and water pump 15 power supplys just are switched on, and total system just can be started working.
The whole system operation process is: opening power, total system brings into operation, pneumatic pump 3 is regulated the flow of extracting air in the organic glass case 4 out by transferring voltage module 11, accurate air mass flow is measured (measuring once in per 6 seconds) and electric signal is transferred to CPU processor 12 by air flowmeter 2, after digitizing, be stored in the database of computing machine 13, enter the air of organic glass case 4 and deliver to CO by solenoid valve 6, plastic conduit 22 and threeway 10 extractions with air sampling pump 8 simultaneously 2Concentration analyzer 7 is measured, and obtains to enter CO in the air of organic glass case 4 2Concentration, discharge CO in the air of organic glass case 4 2Concentration is also delivered to CO with air sampling pump 8 by threeway 1, plastic conduit 21, solenoid valve 6 2Concentration analyzer 7 is measured.In order to ensure with a CO 2Analyser 7 can be measured CO in the air that enters and discharge organic glass case 4 simultaneously 2Concentration is switched back and forth every 1 minute with solenoid valve and once to be entered CO 2An air of concentration analyzer 7 (preceding 30 seconds air is the residual exhaust gases behind the last sample determination, does not write down) and a CO that measures 2Concentration value is transferred to CPU processor 12.CPU processor 12 calculates CO in the air that enters and discharge organic glass case 4 that obtains after measured 2Concentration difference is (by CO in the plant 31 photosynthesis fixed airs 2And realize), and compare with the concentration difference (10-15ppm) of CPU processor 12 inner settings, if difference is greater than setting value, illustrate that the plant photosynthesis strength ratio is higher in the organic glass case, CPU processor 12 will be given the accent voltage module 11 of control pneumatic pump 3 speed of rotation information feedback, thereby improve the operating voltage of pneumatic pump 3, increase the air mass flow that enters organic glass case 4; On the contrary, if measure difference less than setting value, CPU processor 12 also can be given the accent voltage module 11 of control pneumatic pump 3 speed of rotation information feedback, reduce the speed of rotation of pneumatic pump 3, reduce the air mass flow that enters the organic glass case, drop in the concentration difference range of setting until the absolute value of measuring the concentration difference.The air mass flow that enters organic glass case 4 is measured by air flowmeter 2, and signal is transferred to CPU processor 12, and CPU processor 12 is according to the air mass flow and the CO of turnover organic glass case 4 in the unit interval 2Concentration difference is calculated and is obtained the fixing CO of (photosynthesis) the unit interval inland basin ecosystem on daytime 2Quantity.
Owing to plant 31 unglazed cooperation usefulness night, terrestrial ecosystems are in CO 2Clean discharging, CO in the air of discharge organic glass case 4 2Concentration will be greater than CO in the air that enters 2Concentration, CPU processor 12 can be calculated CO in the acquisition air that enters and discharge organic glass case 4 after measured equally 2Concentration difference (negative value), and with the concentration difference of CPU processor inner setting (20～-30ppm) compare, if the absolute value of difference is greater than the absolute value of setting value, system control cpu 12 will be given the accent voltage module 11 of control pneumatic pump 3 speed of rotation information feedback, thereby improve the operating voltage of pneumatic pump 3, increase the quantity that air enters organic glass case 4; On the contrary, if measure the absolute value of the absolute value of difference less than setting value, CPU processor 12 also can be given the accent voltage module 11 of control pneumatic pump 3 speed of rotation information feedback, reduce the speed of rotation of pneumatic pump 3, reduce the air mass flow that enters the organic glass case, drop in the concentration difference range of setting until measuring the concentration difference.CPU processor 12 is according to the air mass flow and the CO of turnover organic glass case 4 in the unit interval 2Concentration difference is calculated and is obtained the CO of unit interval inland basin ecosystem discharging at night 2Quantity.CPU processor 12 is by the CO that terrestrial ecosystems daytime (photosynthesis) are fixing and discharge night (biology and soil respiration) that adds up 2Quantity just can obtain clean fixing/discharging CO of unified day of terrestrial ecosystem 2Quantity.
Owing to very easily cause greenhouse effect after organic glass case 4 covers, may cause the temperature in the organic glass case 4 to exceed more than 10 ℃ than atmospheric temperature, organic glass inside surface at organic glass case 4 forms a large amount of steam simultaneously, has a strong impact on the photosynthesis of plant 31.For the temperature inside the box being controlled at 2 ℃ up and down of the outer atmospheric temperature of case, interior Temperature Humidity Sensor 18 of case and the outer Temperature Humidity Sensor 19 of case are measured respectively and glass box inside and outside humiture data transmission are arrived CPU processor 12, CPU processor 12 will be according to the dynamic change of the temperature inside the box, the temperature difference that promptly compares interior Temperature Humidity Sensor 18 of case and the outer Temperature Humidity Sensor 19 of case, and be controlled at the rotational speed that 2 ℃ the requirement control up and down of the outer atmospheric temperature of case transfers voltage module 17 to regulate water pumps 15 according to the temperature inside the box, with the flow of the condensate water of condensation copper pipe 14 in the adjusting organic glass case 4, thereby realize control organic glass case temperature and humidity.
The present invention measures terrestrial ecosystems and fixes/discharge CO 2The advantage of the apparatus and method of ability is: the equipment set expense is low, and is practical; Can realize the automatic on-line METHOD FOR CONTINUOUS DETERMINATION; Whole mensuration process is little to the influence of photosynthesis of plant; Mensuration precision height, the result realizes automatic calculating; And can reflect more objectively that terrestrial ecosystems fix/discharge CO 2Spatial-temporal characteristics.
Though the present invention with preferred embodiment openly as above, but its purpose is not in order to limit the present invention, any familiar those of ordinary skill of the present invention, without departing from the spirit and scope of the present invention, when doing suitable equivalence design and retouching, the present invention will not abandon advocating the right of these equivalence changes.In other words, protection scope of the present invention should be with the determined scope of claim, and can explain that content in one's power be as the criterion by general the theory of identity.

Claims (10)

1. CO is fixed/discharged to mensuration terrestrial ecosystems 2The device of ability comprises: transparent casing, air supply and metering outfit, CO 2Concentration determination equipment, data acquistion and control system,
Wherein, the glass box body is used to cover terrestrial ecosystems to be determined, and one side sidewall of transparent casing two lateral walls is provided with air intake and the another side sidewall is provided with air out;
The air supply is connected with the air inlet/outlet of transparent casing with metering outfit, pumping into to transparent casing or to supply air from the mode that transparent casing aspirates out air, and measures the air mass flow of the transparent casing of flowing through;
CO 2Concentration determination equipment is connected with air out with the air intake of transparent casing respectively, enters or discharge the CO of transparent casing with mensuration 2Concentration;
Data acquistion and control system is from CO 2The collection of concentration determination equipment enters and discharges the CO of transparent casing 2Concentration data and calculating concentration difference, the concentration difference of this concentration difference and internal system setting is compared, and control air supply and metering outfit to transparent casing air supplied flow and gather this air mass flow data according to relatively result, according to the air mass flow data of gathering with the concentration difference is calculated and CO is fixed/discharged to the storage terrestrial ecosystems 2Ability.
2. device according to claim 1 is characterized in that, described transparent casing is made greater than 95% organic glass by transmittance.
3. device according to claim 1 and 2 is characterized in that described air intake and air out are arranged at the upper and lower of transparent casing two lateral walls respectively.
4. device according to claim 1, it is characterized in that, described air supply and metering outfit comprise pneumatic pump, transfer voltage module and air flowmeter, wherein, the accent voltage module is regulated the speed of rotation of pneumatic pump to increase or to reduce the air mass flow in the transparent casing under the control of data acquistion and control system, air flowmeter is measured air mass flow and given data acquistion and control system with the air mass flow data transmission.
5. device according to claim 1 is characterized in that, described CO 2Concentration determination equipment comprises solenoid valve, air sampling pump and CO 2Concentration analyzer, wherein, the air sampling pump is connected with air out with the air intake of transparent casing respectively by solenoid valve, along with solenoid valve connects the air intake path and connects switching between the air out path, the air sampling valve is respectively from the air intake of transparent casing and air out extracting air sample and deliver to CO by phased manner 2In the concentration analyzer, CO 2Concentration analyzer is measured the CO that enters and discharge transparent casing 2Concentration also is transferred to data acquisition and opertaing device with concentration data.
6. device according to claim 1, it is characterized in that, described data acquistion and control system comprises CPU processor and computing machine, wherein, CPU processor organized data capture program, control program and calculation procedure, computing machine be the stocking system data of gathering and the result who obtains by system-computed then.
7. device according to claim 6 is characterized in that the course of work of described CPU processor is: from CO 2Concentration analyzer collection and calculating enter and discharge the CO in the transparent casing (as organic glass box) 2The concentration difference also compares with the concentration difference of inner setting, if the absolute value of measuring the concentration difference is greater than the absolute value of setting the concentration difference, then the control of CPU processor transfers voltage module to strengthen the rotational speed of pneumatic pump, enter the air mass flow of transparent casing with increase, on the contrary, if the absolute value of measuring the concentration difference is less than the absolute value of setting concentration value, accent voltage module in control air supply of CPU processor and the metering outfit reduces the rotational speed of pneumatic pump, enter air mass flow in the transparent casing with minimizing, drop in the scope of setting the concentration difference until measuring the concentration difference; The CPU processor is gathered the air mass flow data of being measured by the air flowmeter in air supply and the metering outfit, and according to the CO of these air mass flow data and mensuration 2The CO that the concentration difference unit of account time inland basin ecosystem is fixed/discharged 2Quantity, CO is fixed/discharged to the terrestrial ecosystems day and night by adding up 2Quantity, obtain the clean fixing/discharging CO of terrestrial ecosystems whole day 2Quantity.
8. device according to claim 1 is characterized in that described device also comprises the temperature and humidity opertaing device.
9. device according to claim 8, it is characterized in that, described temperature and humidity opertaing device comprises Temperature Humidity Sensor in the case, the outer Temperature Humidity Sensor of case, condensation copper pipe, water pump and accent voltage module, wherein, in the case the outer Temperature Humidity Sensor of Temperature Humidity Sensor and case respectively glass box inside and outside humiture data transmission to data acquistion and control system, system data collection and control system are calculated the dynamic change of glass box inside and outside humiture and are controlled at the rotational speed that 2 ℃ the requirement control voltage regulating module up and down of the outer atmospheric temperature of case is regulated water pump according to the temperature inside the box, enter with adjusting condensation copper pipe condensate water flow and control humiture in the transparent casing.
10. CO is fixed/discharged to mensuration terrestrial ecosystems 2The method of ability comprises:
A. be provided with air intake with one side sidewall of two lateral walls and the another side sidewall is provided with the transparent casing of air out covers terrestrial ecosystems to be determined;
B. pump into from the porch of transparent casing or from the exit suction air of transparent casing and to transparent casing supply air, and measure the air mass flow of the transparent casing of flowing through;
C. measure the airborne CO that enters or discharge transparent casing from air intake from air out 2Concentration;
D. gather the CO that enters and discharge transparent casing 2Concentration data and calculating concentration difference, the concentration difference that this concentration difference and internal system are set compares, and according to relatively result's control to transparent casing air supplied flow and gather this air mass flow data, according to the air mass flow data and the CO that gather 2The concentration difference calculate and CO is fixed/discharged to the storage terrestrial ecosystems 2Ability.
CNB2005100949135A 2005-10-20 2005-10-20 Measure terrestrial ecosystems and fix/discharge CO 2The apparatus and method of ability Expired - Fee Related CN100557441C (en)

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CN111830164A (en) * 2020-07-22 2020-10-27 中国科学院广州地球化学研究所 Half open type dynamic box system for measuring plant BVOCs emission in outfield

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4768390A (en) * 1985-06-14 1988-09-06 The British Petroleum Company P.L.C. Instrument for measuring the photosynthetic activities of plants
CN2282686Y (en) * 1996-12-17 1998-05-27 中国科学院大气物理研究所 Automatic sampling analyzer for NO2
US20020000226A1 (en) * 2000-01-19 2002-01-03 Butnor John R. Automated carbon efflux system
CN1632521A (en) * 2004-12-14 2005-06-29 武汉理工大学 Multifunctional environmental simulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768390A (en) * 1985-06-14 1988-09-06 The British Petroleum Company P.L.C. Instrument for measuring the photosynthetic activities of plants
CN2282686Y (en) * 1996-12-17 1998-05-27 中国科学院大气物理研究所 Automatic sampling analyzer for NO2
US20020000226A1 (en) * 2000-01-19 2002-01-03 Butnor John R. Automated carbon efflux system
CN1632521A (en) * 2004-12-14 2005-06-29 武汉理工大学 Multifunctional environmental simulator

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