Global Yearly Leaf Area Index (LAI) in 2000-2020

Leaf Area Index (LAI) is a critical parameter in ecology and agriculture that represents the total one-sided green leaf area per unit ground surface area. It is typically expressed in square meters of leaf area per square meter of ground area (m²/m²). LAI is an essential indicator for understanding plant canopy structure, photosynthetic capacity, and the overall health of vegetation.The product integrates three LAI datasets—NOAA CDR, MODIS LAI, and ERA5—using the inverse distance weighted error theory to generate a global 1-kilometer annual LAI product for the period 2000-2020.

叶面积指数（Leaf Area Index, LAI）是生态学与农业领域的关键参数，指代单位地表面积上的单侧绿色叶片总面积，其常规表达单位为每平方米地表对应的叶面积平方米数（m²/m²）。LAI是解析植物冠层结构、光合能力以及植被整体健康状态的核心指示因子。本数据集融合了NOAA CDR、MODIS LAI与ERA5三款叶面积指数数据集，基于反距离加权误差理论，生成了2000-2020年时段内全球1公里分辨率的年度叶面积指数产品。