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| 太湖流域近地表主要温室气体本底浓度特征 |
| Background Density Characteristic oftheM ain Greenhouse Gas Near-surfacein TaiLake Basin |
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| DOI： |
| 中文关键词: 太湖流域 近地表 温室气体 本底浓度 |
| 英文关键词: TaiLakebasin N ear-surface Greenhousegas Background density |
| 基金项目:中国科学院知识创新工程基金资助项目 (KZCX1-SW - 01) |
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| 中文摘要: |
| 根据2003年1月-2005 年6月 太湖流域近地表大气中主要温室气体CO 2 、CH 4 和N 2 O本底浓度的监测资料, 研究了该流域近地表大气主要温室气体浓度的变化特征。结果表明, 在观测时段内, 该流域近地表大气CO 2 浓度呈上升趋势;CH 4 浓度呈逐年递减趋势;N 2 O 浓度呈先减后增趋势。3种气体主要与人类活动、工农业生产和交通运输业发展有关,CO 2 浓度的季节变化明显, 冬春季高, 夏秋季低, 最高值在12月, 最低值在8月 ;CH 4 浓度由春至夏升高, 由夏至秋至冬递减, 最高值 |
| 英文摘要: |
| A ccordingtothe monitoring materials on background density near- surface ofTaiLakebasin from January 2003toJune 2005, thisarticlehasstudiedthechangecharacteristicsofthe maingreenhousegases likeCO 2 , CH 4 andN 2 O. Theresultshaveshownintheobservationtime, theaverage densityofCO 2 iswiththe trend ofmore andmore high, theaverage densityofCH 4 iswith decreasingyearbyyear, theaverage densityof N 2 O iswiththetendency offirstreducing andthen increasing. Thetendency ofthree kindsofgaseswasvery closerelation with the mankind activity, such asindustry, agriculture and transportation. The change ofCO 2 density wasobviousseasonalvariation with high in winterandspringandlow in summerand autumn, them aximum appearedin Decemberandthem inimum appearedinA ugus.t TheCH 4 densityelevatedfrom springtosummerand decreased from summerto winter, andthem aximum data appeared in July, the minimum appearedin February. ThechangeofN 2 O density wasnotobviousseasonalvariation with havebeinginfluenced undertheintensityvariation ofsourcesandsinks. Asthedailychange, theCO 2 densitywasdouble- peak, theCH 4 wasnoobviousrule, andthe highestchange dataofN 2 O wasfrom summertothefal,l andthentospringandwinter. |
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