Matthews E, Fung I. Methane Emission from Natural Wetlands: Global Distribution, Area and Environmental Characteristics of Sources[J]. Global Biogeochem. Cycles, 1987, 1: 61-86.
[6]
Barklett K B, Harriss R C. Review and assessment of methane flux from wetlands[J].Chemosphere, 1993,26:261-320.
[7]
Dlugokencky E J, Houweling S L, Bruhwiler K A, et al. Atmospheric methane levels off: Temporary pause or a new steady-state?[J]. Geophys. Res. Lett., 2003,30(19):10,1029/2003GL018126
Fitter A H. Root production and turnover an upland grassland subjected to artificial soil warming respond to radiation flux and nutrients, not temperature[J]. Oeclolgia, 1999,120:575-581.
[10]
Bubier J L, MooreT R, Bellisario L, et al. Ecological controls on methane emissions from a northern peatland complex in the zone of discontinuous permafrost, Manitoba, Canada[J].Global Biogeochem. Cycles, 1995,9:455-470.
[11]
Dise N B.Methane emission from Minnesota peatlands: Spatial and seasonal variability[J]. Global Biogeochem. Cycles, 1993,7:123-142.
[12]
Wickland K P, Striegl R G, Schmidt S K, et al. Methane flux in subalpine wetland and unsaturated soils in the southern Rocky Mountains[J]. Global Biogeocem. Cycles, 1999,13:101-113.
Schesinger W H, Andrews J A. Soil respiration and the global carbon cycle[J]. Biogeochemistry, 2000,48:7-20.
[17]
Svensson B H, Rosswall T. In situ methane production from acid peat in plant communities with different moisture regimes in a subarctic mire[J]. Oikos, 1984,43:341-350.
[18]
Glenn S, Heyes A, Moore T. Carbon dioxide and methane fluxes from drained peat soils, southern Quebec[J]. Global Biogeochem. Cycles, 1993,7:247-257.
[19]
Song Changchun, Yan Baixing, Wang Yuesi, et al. CO2 and CH4 fluxes and their factors from the freshwater marsh in Sanjiang Plain [J]. Chinese Science Bulletin, 2003, 48:2473-2477.
[20]
Sommerfeld R A, Mosier A R, Messelman R C. CO2, CH4 and N2O flux through a Wyoming snowpack and implications for global budgets[J]. Nature, 1993,361:140-142.