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Review of methods for in situ leaf area index (LAI) determination:Part II. Estimation of LAI, errors and sampling

Authors
Journal
Agricultural and Forest Meteorology
0168-1923
Publisher
Elsevier
Publication Date
Volume
121
Identifiers
DOI: 10.1016/j.agrformet.2003.08.001
Keywords
  • Leaf Area Index
  • Gap Fraction
  • Clumping
  • Leaf Orientation
  • Ground Measurements
  • Sampling Scheme

Abstract

Abstract The theoretical background of modeling the gap fraction and the leaf inclination distribution is presented and the different techniques used to derive leaf area index (LAI) and leaf inclination angle from gap fraction measurements are reviewed. Their associated assumptions and limitations are discussed, i.e., the clumping effect and the distinction between green and non-green elements within the canopy. Based on LAI measurements in various canopies (various crops and forests), sampling strategy is also discussed.

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