MEASUREMENT OF METHANE AND NITROUS OXIDE EMISSIONS FROM THE PEATLANDS IN NORTHERN QUEBEC, CANADA (15th Symposium on Polar Biology)
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 c...
Main Authors: | , , , , , , , |
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Format: | Report |
Language: | English |
Published: |
Proceeding
1994
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Subjects: | |
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 |
Summary: | 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>). |
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