Leaf Area Index
Leaf Area Index (LAI) is a dimensionless quantity that measures the total one-sided area of leaves per unit ground area covered by a canopy. It quantifies canopy density and structure: LAI = 0 for bare soil, LAI = 1 for a thin crop, LAI = 3-6 for dense cereal or grass canopies, and LAI > 8 for dense forest. LAI is a key variable in crop growth models, evapotranspiration estimation, and remote sensing because it directly controls light interception, photosynthesis, and water loss from vegetation.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Watson, D. J. (1947). Comparative physiological studies on the growth of field crops: I. Variation in net assimilation rate and leaf area between species and varieties, and within and between years. Annals of Botany, 11(43), 375-407. · DOI 10.1093/oxfordjournals.aob.a083148
- Chen, J. M., & Black, T. A. (1992). Defining leaf area index for non-flat leaves. Plant, Cell & Environment, 15(4), 421-429. · DOI 10.1111/j.1365-3040.1992.tb00992.x
- Weiss, M., Baret, F., Smith, G. J., Jonckheere, I., & Coppin, P. (2004). Review of methods for in situ leaf area index (LAI) determination: Part II. LiDAR and spectral approaches. Agricultural and Forest Meteorology, 121(1-2), 37-53. · DOI 10.1016/j.agrformet.2003.08.001
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