For the period of constant leaf area, no clear relationship
was found between the LAI and NDVI. In the case of the
leaf senescence period, individual years showed good LAI–
NDVI relationships (R2 values were 0.96, 0.96, and 0.81 for
year 1999, 2000, and 2001, respectively), but the R2
dropped to 0.01 when all the data were pooled. By
correcting for the background NDVI, the LAI–NDVI
relation for the pooled data improved:
For the period of constant leaf area, no clear relationshipwas found between the LAI and NDVI. In the case of theleaf senescence period, individual years showed good LAI–NDVI relationships (R2 values were 0.96, 0.96, and 0.81 foryear 1999, 2000, and 2001, respectively), but the R2dropped to 0.01 when all the data were pooled. Bycorrecting for the background NDVI, the LAI–NDVIrelation for the pooled data improved:
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