How can it correctly measure leaf area if the sensor can’t see all the leaves, or if the leaves overlap?
A Leaf area is not calculated by viewing all the leaves. Rather, it is calculated from how much radiation is extinguished as it passes through the canopy. Random leaf positioning is assumed, implying a certain amount of leaf overlap. In fact, if a particular canopy had leaves positioned so that no leaf overlap were present, it would cause an error in the LAI-2200’s computed result, because radiation is extinguished faster than the ideal in this case.
