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1、Vol.10No.2肖輝林等：土壤變暖對(duì)土壤微生物活性的影響5ArticleID：1008-181X(2001)02-0138-05EffectsofSoilWarmingonSoilMicrobialActivityXIAOHui-lin1,ZHENXi-jian2(1:GuangdongInstituteofEco-environmentalandSoilSciences,Guangzhou510650,China;2:GuangzhouStationofEnvironmentalMonitoring,Guangzhou510030,China)Abstract:Theeff
2、ectsofsoilwarmingonsoilmicrobialactivityandtheconsequencesarereviewedanddiscussedinthispaper.Manystudiesshowthatthereisapositivecorrelationbetweensoilrespiration(R)andtemperature(T).Modelsoftherelationshipincludinglinearregressionanalysis,Q10relationship,powerrelationship,Arrheniusrelationshi
3、pandothershavebeenused,butusually,theycannotprovideanunbiasedestimateofrespirationrate.Nevertheless,almostallstudiesontherelationshipindicatethatsoiltemperaturestronglyinfluencemicrobialactivityandrespirationinsoil.Soilwarminginarangeoftemperaturewillincreasesoilmicrobialactivityandrespiratio
4、nrate.Onemechanismtoexplainthisobservationisashiftinmicrobialcommunitycomposition.Furtherstudiesarerequiredinordertomakeanswersmoreclearandpredicatetheeffectsofglobalwarmingonsoilmoreaccurately.Keywords:soilwarming;soilmicrobialactivity;soilrespirationCLCnumber:X172;S154.36Documentcode:A土壤變暖對(duì)
5、土壤微生物活性的影響肖輝林1，鄭習(xí)健2（1：廣東省生態(tài)環(huán)境與土壤研究所，廣東廣州510650；2：廣州市環(huán)境監(jiān)測(cè)中心站，廣東廣州510030）摘要：討論了土壤變暖對(duì)土壤微生物活性的影響及其后果。許多研究表明，土壤呼吸與土壤溫度呈正相關(guān)關(guān)系。描述這種關(guān)系所用的模式有線性回歸分析、Q10關(guān)系式、冪關(guān)系式、Arrhenius關(guān)系式及其它關(guān)系式，但這些模式通常都不能準(zhǔn)確地估計(jì)呼吸率。盡管如此，幾乎所有的研究都顯示土壤溫度強(qiáng)烈地影響土壤微生物活性及呼吸。在一定溫度范圍內(nèi)，土壤變暖提高土壤微生物活性及呼吸率。解釋這種現(xiàn)象的一種機(jī)制是微生物群體組成隨溫度升高而改變。文章最后指出，為了得出更加明
6、確的結(jié)論及更加準(zhǔn)確地預(yù)測(cè)全球變暖對(duì)土壤的影響，必須進(jìn)行更深入地研究。關(guān)鍵詞：土壤變暖；土壤微生物活性；土壤呼吸中圖分類號(hào)：X172;S154.36文獻(xiàn)標(biāo)識(shí)碼：AVol.10No.2肖輝林等：土壤變暖對(duì)土壤微生物活性的影響5Soiltemperatureexertsstrongcontrolovermicrobialactivity[1~3],andstronglyaffectsmicrobialrespirationinsoil[4~6].Althoughsoilrespirationisalsoverysensitivetochangesinmoisture,andthosew
7、armingeffectscouldbemodifiedbychangesinmoistureregimesthatmightaccompanyotherclimaticchanges,underintermediatemoistureconditions,temperatureexertsadominantinfluenceonmicrobialrespiration[4,7].Intheirreviewofsoilrespirationratesfromterrestrial
