Open top chamber facility
Parent institution: Global Change Research Institute CAS
Active since 2013
Active through 6
Klem, Karel
email: klem.k@czechglobe.cz
This facility is under operation since 2012 and is used to simulate future climate conditions, especially the effects of elevated CO2 concentration, drought stress, the influence of UV radiation, nitrogen nutrition and increased temperatures in agricultural ecosystems.
The basic part of the experimental station consists of 24 chambers of hexagonal base with side length 2m and diameter of the circumscribed circle 4 m. The basic height of chamber is 2m and above this construction is build the roof with rotating lamellas that allow to control chamber ventilation and manipulate incident rainfall. The chambers are equipped with recirculation system. The number of chambers enable to study all combinations of three environmental factors (e.g. elevated CO2, drought and UV) in three replications. Inside chamber the split plots of barley/wheat and unfertilized/N fertilized are conducted.
The chambers are build from two distinct plastic materials (UV transmitting and UV blocking acrylic). The operation is fully automatic based on feedback regulation using CO2 analysers, air temperature sensors inside chamber, soil moisture sensors and rain-gauge. Three outside plots are used to analyse the chamber effect. The station is equipped with a number of instruments for physiological and morhological measurements: Gas exchange systems, fluorometers, spectroradiometers, water potential, leaf area meters etc.
Country: Czech Republic
Latitude: 49.525264
Longitude: 16.231432
Nearest town: Bystrice nad Pernstejnem
Distance from neaerst town: 3 km
Study of the interactions between the effects of elevated CO2 concentration, UV radiation, drought stress and N nutrition on the physiology, yield and quality of agricultural crops.
The facility enables the evaluation of the interactive effects of at least three environmental factors simultaneously (e.g. elevated CO2 concentration, drought, UV radiation). The site is closely related to analytical, metabolomic and isotopic laboratories.
The plots are relatively small to test more genotypes.
10 step-in growth chambers located in Brno, including the system of modulated UV lamps (UV-B and UV-A).
Experiments duration: Months, Years;
Total area: 190 m²
1200 including area outside chambersAvailable area: 190 m²
1200 including area outside chambersunit size: 7 m²
Replicates number: 3
Electricity available on site.
Years measured: 30
Mean Temperature: 7.2 °C
February Mean Temperature: -1.9 °C
July Mean Temperature: 16.88 °C
Mean Annual Speed: 2.94 m/s
Max. Annual Speed: m/s
Dominant Direction: W/NW
Precipitation type: Both;
Total annual precipitation: 609 mm
Mean snow cover duration: days
| Variable | Ecosystem | Status |
|---|---|---|
| CO2 | Agrosystem | Active |
| Warming | Agrosystem | Active |
| Precip | Agrosystem | Active |
| UV | Agrosystem | Active |
| Airpoll | Agrosystem | Planned |
| Management - Nutrients (levels or nutrient type) | Agrosystem | Active |
Up to 1 people
No on-site staff.
Up to 3 visitors
Up to 4 beds
Showers on site
No laundry on site