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1、全国网络美女第一界代表大会——别看花眼了，呵呵~~呵呵,这是俺精心挑选的网络美女集合版照片,大家该感谢我呀~! ※※※※※※爆笑集中营***乐死不偿命全国网络美女第一界代表大会——别看花眼了，呵呵~~~[图片][freefish67]31K03.2710:4013761回复:网络用以维持其点击率的关键，就是美女！！！支持！！支持！！！[客观与
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3、属作者个人观点，与西陆无关； 2.禁止利用本论坛进行赌博、非法买卖等违法行为； 3.禁止发表反动、色情和其他违反国家法律、法规的言论、信息； 4.禁止发表恶意攻击他人的言论； 5.任何转载或转贴都应注明真实作者和真实出处；=>相关详细说明本论坛由xilu提供空间及技术支持点击此处申请西陆高速免费论坛窗体底端返回顶部SoilproductionofCH4isassociatedwithwetlands,floodedriceproduction,termites,landfills,andareasofoilan
4、dnaturalgasproduction,andabout40%oftheroughly500TgofCH4producedannuallyisproducedinthesoil.Naturalwetlandsoccupyapproximately500–600Mhaandemitabout100TgofCH4annually(Matthews1993).Floodedricefieldsoccupyabout148Mha,produceabout475Mtyear–1ofrice,andemitabout50TgofCH4annu
5、ally(Coleetal.1996).Landfillsaswastestoragefacilitiesemitapproximately22TgofCH4year–1(Thorneloeetal.1993).Termitesconsumewoodyproductsand,globally,produceabout20TgofCH4year–1(BacheletandNeue1993).IntheseareasofCH4productioninthesoil,oxidationofCH4bysoil-bornemicroorgani
6、smsisveryhigh.Reeburghetal.(1993)estimatedthatabout700TgofCH4isconsumedannuallyinsoilsassociatedwiththesitesofhighemissionstotheatmosphere.TypicallyaerobicsoilisanotherplaceforoxidationofatmosphericCH4.Theamountoxidizedinaerobicsoils,globally,approximatestheannualincrea
7、seinatmosphericCH4,about40Tgyear–1.ThemagnitudeofthissoilCH4sinkhasbeenobscuredbythefocusonnetfluxfromecosystemstotheatmosphere,whichhasalreadysubtractedmostbiologicalconsumption.Onlyinuplandsoilsdoessoilconsumptiontypicallyexceedproduction.ConsumptionofatmosphericCH4in
8、aerobicsoilsbysoilmicroorganismsoccursinsoilsglobally:temperate,tropical,boreal,grasslands,andforests(Steudler
