Fig. 3
From: Heat and drought impact on carbon exchange in an age-sequence of temperate pine forests
Annual total a gross ecosystem productivity (GEP), b ecosystem respiration (RE), and c net ecosystem productivity (NEP) in the 80-, 45-, and 17-year-old forests. Dry years are shaded as yellow (2007, 2017), hot year is shaded as orange (2018), and concurrent hot and dry years are shaded as red (2005, 2010, 2012 and 2016)