Leaf area index

（重定向自Leaf area ratio）

A hemispherical photograph of forest canopy. The ratio of the area of canopy to sky is used to approximate LAI.

Leaf area index (LAI) is a dimensionless quantity that characterizes plant canopies. It is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area / ground area, m / m) in broadleaf canopies. In conifers, three definitions for LAI have been used:

单词	Leaf area ratio
释义	Leaf area ratio 英语百科 Leaf area index （重定向自Leaf area ratio） Leaf area index (LAI) is a dimensionless quantity that characterizes plant canopies. It is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area / ground area, m / m) in broadleaf canopies. In conifers, three definitions for LAI have been used:
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