It is important to note that while the LAI development of the forests will depend on the plant’s phenology, the variations in NDVI may be affected by other environmental factors. For example, long before the leaves began to appear on the trees, (Julian day 110), NDVI already started to
increase (Julian day 84 in 1996, Julian day 50 in 1997, and Julian day 67 in 2000). Possible reasons for this would be to include background reflectance following snowmelt.
It is important to note that while the LAI development of the forests will depend on the plant’s phenology, the variations in NDVI may be affected by other environmental factors. For example, long before the leaves began to appear on the trees, (Julian day 110), NDVI already started toincrease (Julian day 84 in 1996, Julian day 50 in 1997, and Julian day 67 in 2000). Possible reasons for this would be to include background reflectance following snowmelt.
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