Lecture 3: Vegetation Sampling - Alaska Geobotany Center
Lecture 3: Vegetation Sampling - Alaska Geobotany Center
Lecture 3: Vegetation Sampling - Alaska Geobotany Center
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Leaf Area Index (LAI) <br />
• An index of the ra4o of the area of leaves and green vegeta4on in <br />
the plant canopy per unit area of ground surface <br />
• LAI is a nondestruc4ve, rela4vely fast method of obtaining an <br />
es4mate of biomass. <br />
• The only way to get true leaf area is to strip all the leaves off the <br />
plants and measure their area. <br />
• All other methods provide an “index” of this value (e.g. inclined <br />
point frame, LICOR-‐2000). <br />
• Regression methods are used to relate biomass to leaf area.
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