FV2000 Windows Software
FV2000 Windows Software for downloading and post-processing of LAI-2000 data. For more information click here.
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Why use the LAI-2000 to measure
Leaf Area Index?
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For Direct, Rapid, Non-Destructive LAI Measurements Leaf Area Index (LAI) is the ratio of the foliage area to the ground area. The measurement of LAI is of fundamental importance in agricultural and ecological research because LAI is a measure of plant growth; it directly affects the interception and absorption of light by the canopy, and it influences the heat balance and evaporation from the landscape. The LAI-2000 calculates Leaf Area Index and other canopy structure attributes from radiation measurements made with a “fish eye” optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is computed using a model of radiative transfer in vegetative canopies.
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LAI-2070 Control Unit:
Sensor Inputs: 2 DB15 connectors for LAI-2050 sensor heads (multiplexed, 5 channel). 2 BNC connectors for other LI-COR radiation sensors.
Memory: 64K bytes RAM for file storage. 16K bytes RAM for working memory. File size is user determined.
File Storage Capacity: Each file requires 250 bytes, plus 30 bytes per record. Memory capacity is 64K bytes but files cannot be larger than 16K or overlap a 16K boundary. So, for example, a file with 10 records (such as 2 above and 8 below canopy readings) takes up 250 + (10 x 30) = 550 bytes. 16K of memory will hold 29 of these files, so the entire 64K memory would hold 116 files.
Keyboard: 24 key tactile response keypad with audio feedback.
Display: 2 line by 16 character LCD.
Communications: RS-232 wired as Data Communications Equipment (DCE). UART supported, baud rates of 300, 1200, 2400, 4800; 7 or 8 data bits; parity = even, odd, none; xon-xoff either on or off; hardware output handshaking with DTR pin 20 required. FV2000 Windows software is included to download data from the LAI-2000 to a PC.
Clock: Year, Month, Day, Hour, Minute. Accuracy: ± 3 minutes per month.
Power Requirements: 6 alkaline "D" cell batteries.
Battery Life: 260 hours of continuous operation.
Low Battery Warning: Occurs when 15% of battery life remains.
Memory Backup Power: "D" cells power RAM for 1 year after automatic low voltage shut-off. RAM is also protected for short intervals (5 minutes) to facilitate battery changes.
LAI-2050 Optical Sensor:
Nominal Angular Coverage:
Ring 1: 0.0 - 12.3°
Ring 2: 16.7 - 28.6°
Ring 3: 32.4 - 43.4°
Ring 4: 47.3 - 58.1°
Ring 5: 62.3 - 74.1°
Optics: 1.00° maximum decentering error as measured from center of mass of ring 4. 0.50° maximum magnification error as measured from center of mass of ring 4.
Wavelength Range: 320-490 nm.
Radiation Rejection:
490-650 nm: to <1%.
>650 nm: to <0.1%.
Lens Coating: MgF2 for improved transmission at high oblique angles (front lens and others).
View Caps: Provides azimuthal masking into quadrants of 0°, 45°, 90°, 180°, and 270°.
Environmental Conditions: Operating: -15 to 50 °C, 0-100% RH (non-condensing). Storage: -30 to 60 °C, 0-100% RH.
Size:
Control Unit: 21 L x 11.4 W x 6.9 D cm (8.3" x
4.5" x 2.7").
LAI-2050 Optical Sensor: 61 L x 2.9 W x 2.9 D cm (24" x
1.125" x 1.125"). Handle is articulated 7" from lens
and bends 90° down or 25° up.
Weight:
Control Unit: 1.8 kg (3.9 lb.).
LAI-2050 Optical Sensor: 0.85 kg (1.9 lb.).
Specifications subject to change without notice
Ordering Information
Download a current LI-COR Environmental Products Catalog here.
LAI-2000 Plant Canopy Analyzer: Includes LAI-2050 Optical Sensor with 7 ft cable, LAI-2070 Control Unit, Carrying Case for two systems, Set of View Restritors, Carrying Pouch for LAI-2070, FV2000 Windows Software, RS-232 Serial Cable, a Cable for connecting two LAI-2070 Control Units, and Serial to USB adapter.
Accessories:
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LAI-2050 Optical Sensor - For use with LAI-2000 in "Two Sensor, One Control Unit" mode, or with a second LAI-2070 Control Unit in "Remote" mode.
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LAI-2070 Control Unit - For use with the LAI-2050 when operating in "Remote" mode. Includes carrying pouch.
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2000-01 10m Extension Cable for the Optical Sensor
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2000-02 RS-232 Serial Cable
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9920-005 View Restrictors
Brochure
The LAI-2000 Plant Canopy Analyzer brochure is available to download in pdf format.
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FV2000 Software
Data Sheet  |
If you have any questions about the LAI-2000 please feel free to contact us and discuss with our Applications Analysts and Scientists (or your local LI-COR Distributor) how the LAI-2000 can help you with your research.
Selected Links
- Terrestrial Carbon Observations: Protocols for Vegetation Sampling and Data Submission
- Documentation of SuaPan Transect Measurements in Botswana, August 2000
- FED/MAC Data - Leaf Area Indices
- Assessment of Soybean Leaf Area for redefining Management Strategies for Leaf-feeding Insects
- Evaluation of Several Measures of Canopy Openness as Predictor of PPFD in Deeply Shaded Conifer Dominated Forest Understory
- Comparison of Two Methods for Estimating Leaf Area Index on Common Bean
- Canopy analysis as a technique to characterize defoliation intensity on Sandhills range
Please submit your published papers or links to your websites to be featured here by contacting the Product Manager, Mr. Brent Claassen.
Journal References
Use the academic search engines below to find references to the LAI-2000 in many peer reviewed scientific publications.
For best results, start with the search terms provided below or use the forms to customize a search. Results open in a new window.
References from HighWire Press - Internet Imprint of the Stanford University Libraries
References from Google Scholar™
Common Internet searches can be performed with Google, and many articles can be found with Google Scholar:
Applications
The LAI-2000 Plant Canopy Analyzer has become a valuable instrument in a wide range of applications, including canopy growth, canopy productivity, forest vigor, air pollution deposition modeling, insect defoliation studies and remote sensing. See the LAI-2000 brochure for Application examples.
LAI is also one of the fundamental measurements associated with flux measurements and global carbon research. The LAI-2000 is the most commonly used LAI instrument worldwide. See the Publications tab for published scientific research that reference the LAI-2000.
Manual
The LAI-2000 includes a hard copy of the LAI-2000 Instruction Manual.
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LAI-2000
Instruction Manual |
You will be able to download future updates to the LAI-2000 manual through this page.
FV2000
Windows software Manual 
12/30/04 1.5M
Using
a Serial-to-USB Adapter 10/12/05 0.4M
LI-COR now includes a Serial-to-USB adapter with the LAI-2000 to facilitate communication with USB equipped computers. This instruction sheet covers the installation and use of the adapter.
