“…Our results show substantial and apparent diurnal variation in the NEE‐CH 4 over the natural forest where GWL are high, highlighting the importance of high‐frequency ecosystem‐scale flux measurements. There is increasing evidence that woody vegetation can emit a significant CH 4 amount to the atmosphere (Barba et al, ; Covey & Megonigal, ; Pangala et al, , ; Pitz & Megonigal, ; Rice et al, ; Wang et al, ; Welch, Gauci, & Sayer, ). In tropical peatlands, the majority of root biomass occurs within the upper 50 cm of the peat column (Brady, ; Sulistiyanto, ), and dissolved CH 4 in the root zone can be significant (100–1,500 µmol/L; Hoyt, ; Pangala et al, ).…”