[1] [1] Chang T C,Yang S S.Methane emission from wetlands in Taiwan[J].Atmospheric Environment,2003,37:4551-4558.

[2] [2] Huang Y,Wang H,Huang H,et al.Characteristics of methane emission from wetland riceduck complex ecosystem agriculture[J].Ecosystems and Environment,2005,105:181-193.

[3] [3] Singh S N,Kulshreshtha K,Agnihotri S.Seasonal dynamics of methane emission from wetlands[J].Chemosphere:Global Change Science,2000,2:39-46.

[4] [4] Amato F D,Mazzinghi P,Castagnoli F.Methane analyzer based on TDL's for measurements in the lower stratosphere:design and laboratory tests[J].Applied Physics B,2002,75:195-202.

[5] [5] Richard E C,Kelly K K,Winkler R H,et al.A fast-response near-infrared tunable diode laser absorption spectrometer for in situ measurements of CH4 in the upper troposphere and lower stratosphere[J].Applied Physics B,2002,75:183-194.

[6] [6] Loewenstein M,Jost H,Grose J,et al.Argus:a new instrument for the measurement of the stratospheric dynamical tracers,N2O and CH4[J].Spectrochimica Acta Part A,2002,58:2329-2345.

[7] [7] Bandyopadhyay T K,Goyal P,Singh M P.Generation of methane from paddy fields and cattle in India,and its reduction at source[J].Atmospheric Environment,1995,30:2569-2574.

[8] [8] Kormann R,Fischer H,Gurk C,et al.Application of a multi-laser tunable diode laser absorption spectrometer for atmospheric trace gas measurements at sub-ppbv levels[J].Spectrochimica Acta Part A,2002,58:2489-2498.

[9] [9] Tocia G,Mazzinghib P,Mielkec B,et al.An airborne diode laser spectrometer for the simultaneous measurement of H2O and HNO3 content of stratospheric cirrus clouds[J].Optics and Lasers in Engineering,2002,37:459-480.

[10] [10] Fried A,Wert B P,Henry B,et al.Airborne tunable diode laser measurements of formaldehyde[J].Spectrochimica Acta Part A,1999,55:2097-2110.