Articles | Volume 5, issue 2
https://doi.org/10.5194/gi-5-417-2016
https://doi.org/10.5194/gi-5-417-2016
Research article
 | 
12 Sep 2016
Research article |  | 12 Sep 2016

Digital photography for assessing the link between vegetation phenology and CO2 exchange in two contrasting northern ecosystems

Maiju Linkosalmi, Mika Aurela, Juha-Pekka Tuovinen, Mikko Peltoniemi, Cemal M. Tanis, Ali N. Arslan, Pasi Kolari, Kristin Böttcher, Tuula Aalto, Juuso Rainne, Juha Hatakka, and Tuomas Laurila

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Short summary
Digital photography has become a widely used tool for monitoring the vegetation phenology. The seasonal cycle of the greenness index obtained from photographs correlated well with the CO2 exchange of the plants at our wetland and Scots pine forest sites. While the seasonal changes in the greenness were more obvious for the ecosystem dominated by annual plants, clear seasonal patterns were also observed for the evergreen forest.