Leaf area index
Abstract
Leaf area index (LAI) indicates the amount of leaf area in an ecosystem. LAI is a critical parameter for understanding terrestrial ecological, hydrological, and biogeochemical processes. This chapter first introduces field methods for measuring LAI, including direct and indirect methods, which can be divided into contact methods and noncontact optical methods. LAI can be estimated from remote sensing data using either statistical or physical methods. The statistical methods use the empirical relationship between the LAI and surface reflectance or vegetation indices. The physical methods determine the LAI based on radiative light transfer processes within the canopy. Various retrieval methods, including ...
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