Soil carbon flux: an important data in carbon revenue and expenditure research
CO in the air2The rapid increase in the future will have a huge impact on the climate, and this issue has gradually become a focus of international political and economic research.
Soil Respiration Study on Net CO produced by Soil2The amount of gas produced by the soil is an important indicator of soil microbial activity and also an indicator of soil health.The carbon flux of the soil is disturbed by various environmental factors, such as organic matter content, soil moisture, and soil temperature.
The respiration of organisms in natural soils is the main source of carbon.Understanding the relationship between soil carbon flux and other element flows will help us study global climate issues.
In order to facilitate researchers to monitor the carbon flux of soil in the field for a long time, we have specially developed the ACE soil carbon flux monitoring system. While monitoring the carbon flux, we can also monitor some environmental factors that interfere with the carbon flux.It is conducive to researchers' accurate judgment of soil carbon flux data.
ACE Performance
Integrated Breathing Room Built-in CO2Analyzer
Each breathing chamber has a built-in high-precision infrared gas analyzer, which effectively reduces the distance between the air path and the air path, avoids errors caused by the air path, and can respond to CO in the breathing chamber faster.2Concentration changes.The test operation is therefore simple and it is more convenient to use in the field.
Long-term unattended operation in the wild
The ACE is very automated and user-friendly in design, and the breathing chamber can be opened and closed automatically during the measurement cycle.Researchers can set the sampling time interval, and automatically close the breathing chamber when measuring, and automatically open the breathing chamber when not measuring, minimizing the disturbance of the measurement to the soil.When the breathing chamber is opened, the system will automatically adjust to a low power consumption state to ensure long-term use in the field.The unique arm-style design is suitable for field measurement, ensuring the seal of the breathing chamber and ensuring that researchers obtain reliable data.
A perfect system
Each ACE workstation is a complete, integrated soil carbon flux system that contains an aluminum alloy breathing chamber, leaf chamber arm and control unit that can record and display data.Therefore, each workstation can be used independently.The ACE workstation can use batteries, solar panels and wind as power sources, a 40Ah lead-acid battery, enough for about 28 days.
Easy to install
The ACE system is highly integrated and no gas connection pipe is exposed, so there is no need to perform gas connections before the experiment begins.The control unit consists of a large LCD screen and five buttons, which is convenient for single-machine operation without connecting to a computer.The data of gas exchange, carbon flux data, and sensor data of other environmental factors can be recorded through the control unit of the ACE and saved to the machine's flash memory.
Open and closed circuit modes
ACE measurements can be either open-circuit measurement or closed-circuit measurement.During measurement, the respiratory chamber is in a closed state, and the difference in the concentration of reference gas entering the respiratory chamber reflects the soil respiration.
Humidity and temperature data
PAR sensor as for breathing room,Up to 6 soil temperatures and 4 soil moisture sensors are available.
ACE Networked Workstation (Multipoint)
The ACE system is only suitable for single point measurement. Multiple ACE systems can form a networked workstation. A central control unit can connect 32 ACE workstations, and 32 point monitoring is also suitable for each ACE system to reach the distance from the central control unit.100 m.We have built-in analyzer inside the ACE breathing room, so the connection between the ACE system and the central control unit is only one signal line, so the installation is very simple and suitable for field measurement.There is no need to pump gas in the distant breathing chamber to the central control unit to measure, avoiding errors.Each ACE system and central control unit supports hot swap.
Technical indicators of ACE system
co2Measurement range:0 - 600 ppm (26.8 What was buried-3), accuracy 2 ppm
Measurement mode:Open an instance or close the circuit
PAR measurement range:0 - 3000 µmols m-2color-1Silicon film
Soil temperature:6 Hotspot Couple Sensors
Soil moisture:FDR Soil Moisture Sensor
Respiratory chamber gas flow rate r:100-500 Malimin-1
Gas flow rate accuracy:+/- 2% off.yes.
Display unit:240 x 64-point LCD display
operate:Five keys
data:Flash storage data
Built-in battery:12 V standby 1.0 Ah battery
forElectrical system:External lead-acid batteries, solar panels, wind power supplies
RS232 output:19200 baud
Electrical connection:3-pin connector, waterproof, suitable for outdoor use
size:82 Small 33 Small 13 CMS
Closed-circuit leaf chamber size:2.7 l
Open-way leaf chamber size:1.0 l
Respiratory chamber diameter:23 Smart
weight:7.0 Viewed
Central control unit
Structure: Iron sealing system
Connection: 32 ACE ports, two external power ports
Size: 30 x 30 x 15 cms
application
Soil respiration, judgment of the number of microorganisms per unit volume, plant respiration, forest canopy CO2Profile, root respiration, growth room or greenhouse monitoring, animal and insect respiratory physiology, microbial activity and biodegradation, ecological physiology (carbon equilibrium), climate change, environmental control
Origin: UK ADC