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叶面积指数

叶面积指数(Leaf Area Index, LAI)是一个无量纲量,用于衡量单位地面面积上的叶片单侧总面积。它量化了冠层的密度和结构:裸土的LAI为0,稀疏作物的LAI为1,密集的谷类或草类冠层的LAI为3-6,森林的LAI大于8。LAI是作物生长模型、蒸散量估算和遥感中的一个关键变量,因为它直接控制着光照截获、光合作用和植被的水分损失。

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来源

  1. 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
  2. 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
  3. 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

如何引用本页

ScholarGate. (2026, June 3). Leaf Area Index (LAI) Measurement and Applications. ScholarGate. https://scholargate.app/zh/agronomy/leaf-area-index

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ScholarGateLeaf Area Index (Leaf Area Index (LAI) Measurement and Applications). 于 2026-06-15 检索自 https://scholargate.app/zh/agronomy/leaf-area-index · 数据集: https://doi.org/10.5281/zenodo.20539026