Phenological monitoring of a UK woodland: results from digital cameras, spectroradiometers and satellite data

A range of monitoring techniques including digital cameras, radiometers and satellites have the potential to provide new sources of data on vegetation dynamics, including consistent data on the spatial and temporal variability of phenological events and vegetation productivity. This paper compares four data sets collected in 2012 that capture the above-canopy and below-canopy phenology of a deciduous woodland. The longest time-series is provided by weekly below-canopy photos recorded weekly from 1998 onwards. The weekly photos are used to assess the inter-annual variability from 2004 onwards and suggest that green-up varies between 8th April and 3rd May.