Trace gas emissions from a north Wales fen - Role of hydrochemistry and soil enzyme activity

Hojeong Kang, C. Freeman, M. A. Lock

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Fluxes of methane and nitrous oxide from a wetland were compared to hydrochemistry (NO3- and SO4/2-) and soil enzyme activities (β- glucosidase) in an attempt to predict gas fluxes using chemical and enzymatic activities in north Wales, UK. In a one-year survey, the enzyme activities ranged from 0.028 to 0.065 μmol g-1 min-1, while NO3- and SO42- concentrations ranged between 0-0.78 and 5-200 mg L-1, respectively. Methane and nitrous oxide emissions varied between 0.32-240 and 0.28-5.48 mg m-1 da-1, respectively. The field survey was followed by laboratory- based manipulation experiments, from which pilot mathematical models were constructed, and related to the field data. The variation of methane emission was attributed to changes in SO4/2- concentration and temperature at the site. In contrast, NO3- concentration, water table height, and β- glucosidase activity were major controlling factors for nitrous oxide emission. The models explained more than 80 % of the variation observed in the field study.

Original languageEnglish
Pages (from-to)107-116
Number of pages10
JournalWater, Air, and Soil Pollution
Volume105
Issue number1-2
DOIs
Publication statusPublished - 1998 Jul 1

Fingerprint

Hydrochemistry
hydrochemistry
Methane
Nitrous Oxide
Enzyme activity
fen
trace gas
Gas emissions
nitrous oxide
Glucosidases
enzyme activity
methane
Soils
Oxides
Fluxes
soil
Wetlands
field survey
water table
Gases

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

Cite this

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abstract = "Fluxes of methane and nitrous oxide from a wetland were compared to hydrochemistry (NO3- and SO4/2-) and soil enzyme activities (β- glucosidase) in an attempt to predict gas fluxes using chemical and enzymatic activities in north Wales, UK. In a one-year survey, the enzyme activities ranged from 0.028 to 0.065 μmol g-1 min-1, while NO3- and SO42- concentrations ranged between 0-0.78 and 5-200 mg L-1, respectively. Methane and nitrous oxide emissions varied between 0.32-240 and 0.28-5.48 mg m-1 da-1, respectively. The field survey was followed by laboratory- based manipulation experiments, from which pilot mathematical models were constructed, and related to the field data. The variation of methane emission was attributed to changes in SO4/2- concentration and temperature at the site. In contrast, NO3- concentration, water table height, and β- glucosidase activity were major controlling factors for nitrous oxide emission. The models explained more than 80 {\%} of the variation observed in the field study.",
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Trace gas emissions from a north Wales fen - Role of hydrochemistry and soil enzyme activity. / Kang, Hojeong; Freeman, C.; Lock, M. A.

In: Water, Air, and Soil Pollution, Vol. 105, No. 1-2, 01.07.1998, p. 107-116.

Research output: Contribution to journalArticle

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