MEASUREMENT OF METHANE AND NITROUS OXIDE EMISSIONS FROM THE PEATLANDS IN NORTHERN QUEBEC, CANADA (15th Symposium on Polar Biology)

• Main Authors: トダ ヒデシゲ, ヤギ カズユキ, ヨウ ムネオキ, タケウチ マコト, Hideshige TODA, Kazuyuki YAGI, Muneoki YOH, Makoto TAKEUCHI
• Format: Report
• Language: English
• Published: Proceeding 1994
• Subjects: Canada; palsa; Polar Biology; Proceedings of the NIPR Symposium on Polar Biology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5232; http://id.nii.ac.jp/1291/00005232/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5232&item_no=1&attribute_id=18&file_no=1

Methane (CH_4) and nitrous oxide (N_2O) emissions were measured using a chamber (25×25 cm, 15 cm in height) in peatlands in northern Quebec (57°45'N, 76°09'W) in the summer of 1991. The pH in the interstitial water was 4.4-5.6. Dissolved inorganic nitrogen was scarce; nitrate and nitrite concentrations were usually <0.01 mg NL^<-1> and ammonium concentrations were 0.02-0.30 mg ML^<-1>. Methane emission ranged from 0.1 to 18.9 mg CH_4-C m^<-2> d^<-1> in peat bogs. Nitrous oxide emission slightly exceeded our detectable threshold only in a peat bog (0.04 mg N_2O-N m^<-2> d^<-1>) and in a palsa top (0.02 mg N_2O-N m^<-2> d^<-1>).