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LI-COR, LAI-2200 Plant Canopy Analyzer
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LI-COR, LAI-2200 Plant Canopy Analyzer



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LAI-2200 Plant Canopy Analyzer
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  • Non-destructive measurements of Leaf Area Index
  • Calculates mean foliage inclination angle and canopy gap fraction
  • Fast, cost effective measurements
  • On-site evaluation of LAI data
  • For use in a variety of canopy types
LAI-2200 diagram

Leaf Area Index (LAI) is the ratio of foliage area to ground area. The measurement of LAI is of fundamental importance to agricultural and ecological research, as LAI is an indicator of plant growth. LAI directly affects the interception and absorption of light by the canopy and influences the heat balance and evaporation from the landscape.

The LAI-2200 calculates the interception of blue light (320-490 nm) at 5 zenith angles from readings taken above and below the canopy. These data are fit to a well-established and scientifically accepted model of radiative transfer in vegetative canopies to compute Leaf Area Index, Mean Tip Angle, and canopy gap fraction.

Data can be read live in the field and later processed using the powerful FV2200 software. The FV2200 software provides significant data processing options, including 3 additional inversion methods and ring masking.

The LAI-2200 can be used to measure almost any canopy type with the appropriate sampling protocol

LI-COR, LAI-2200 Plant Canopy Analyzer

Measurement leaf canopy.

LAI-2200 Complete set Specifications :

LAI-2250 Optical Sensor:

• Sensor Inputs: 1 6-pin Bulk head connector for control unit interface.

• Memory: o 1 MB flash memory for record storage. o 1 KB EEPROM for calibration and configuration storage.

• Keypad: 2 button, tactile response keypad.

• Clock: Year, Month, Day, Hour, Minute. 3 minutes per month. Can be synced with control unit clock when joined with a data cable.

• Power Requirements: 2 “AA” (alkaline, NiMH, lithium) Batteries.

• Battery Life: 180 hours of typical operation (based on 2 “AA” alkaline batteries).

• Optics: 1.00 maximum decentering error as measured from center of mass of ring 4. 0.50 maximum magnification error as measured from the center of mass of ring 4.

• Radiation Rejection: o > 99% from 490-650 nm; o > 99.9% above 650 nm.

• Wavelength Range: 320-490 nm.

• Nominal Angular Coverage: o Ring 1: 0.0-12.3 o Ring 2: 16.7-28.6 o Ring 3: 32.4-43.4 o Ring 4: 47.3-58.1 o Ring 5: 62.3-74.1

• Lens Coating: MgF2 for improved transmission at oblique angles (external and internal lenses).

• View Caps: Provide azimuthal masking of view into quadrants of 10, 45, 90, 180, and 270.

• Size: 63.8 L x 2.9 W x 2.9 D cm (25.1″ x 1.125″ x 1.125″) (Endcap: 4.4 W x 5.1 D cm; 1.75″ x 2.0″).

• Weight: 0.845 kg (1.86 lbs) with batteries. Environmental Conditions:

• Operating Temperature Range: -20 to 50 C. • Humidity Range: 0 – 95% RH (non-condensing conditions).

• Storage: -40 to 65 C.

LAI-2270 Control Unit:

• Sensor Inputs: 2 6-pin connectors for LAI-2250 Optical Sensors. 2 3-pinconnectors for LI-COR Light Sensors.

• Memory: 128 MB of FAT16 memory.

• Keypad: 22 button tactile response keypad.

• Display: 12864 graphics display.

• Communications: o USB (as mass storage device) o RS-485: baud rate 115200, 8 data bits, no parity, 1 start, 1 stop o RS-232: selectable baud rates of 9600, 38400, 57600, or 115200. 8 data bits, no parity, 1 start, 1 stop.

• Clock: Year, Month, Day, Hour, Minute. Accuracy of 3 minutes per month.

• Power Requirements: 4 “AA” alkaline, NiMH, lithium Batteries.

• Battery Life: o 140 hours based on 4 “AA” alkaline batteries without optical.