岷江冷杉根际土壤微生物对大气CO2浓度和温度升高的响应

应用生态学报

岷江冷杉根际土壤微生物对大气CO₂浓度和温度升高的响应

肖玲¹;王开运^1,2;张远彬¹;吴福忠¹;鲁叶江¹

¹中国科学院成都生物研究所,成都 610041；²华东师范大学上海市城市化过程和生态恢复重点实验室，上海200062

收稿日期:2005-08-11 修回日期:2006-03-21 出版日期:2006-05-18 发布日期:2006-05-18

Responses of microbes in rhizospheric soil of Abies faxoniana to elevated atmospheric CO₂ concentration and temperature

XIAO Ling¹;WANG Kaiyun^1,2;ZHANG Yuanbin¹;WU Fuzhong¹;LU Yejiang¹

¹Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041 China; ²Shanghai Key Laboratory of Urbanization Processes and Ecological Restoration,East China Normal University,Shanghai 200062,China

Received:2005-08-11 Revised:2006-03-21 Online:2006-05-18 Published:2006-05-18

摘要/Abstract

摘要： 应用自控、封闭、独立的生长室系统，研究了川西亚高山岷江冷杉根际土壤微生物数量对大气CO₂浓度升高 (环境CO₂浓度+350(±25)μmol·mol^-1，EC)和温度升高(环境温度+2.2(±0.5)℃，ET)及其CO₂浓度和温度同时升高 (ECT)的响应.结果表明，1)同对照(CK)相比，在6月、8月和10月，EC处理的根际细菌数量分别增加了35%、164%和312%，ET处理增加了30%、115%和209%，而EC和ET处理对根际放线菌和根际真菌数量影响不显著；ECT处理的根际放线菌数量分别增加了49%、50%和96%，根际真菌数量增加了151%、57%和48%，而ECT对根际细菌数量影响不显著.2)3种处理对非根际土壤微生物数量影响均不显著.3)在EC、ET和ECT处理下，微生物总数的根际效应明显,其R/S值分别为1.93、1.37和1.46(CK的R/S值为0.81).

关键词: 小鳞鱼箴, 维持日粮, 转换效率

Abstract: With independent and top-enclosed chamber system,this paper studied the responses of culturable bacteria,fungi,and actinomycetes in rhizospheric soil of Abies faxoniana sapling to elevated atmospheric CO₂ concentration (ambient＋350(±25)μmol·mol^-1,EC),temperature (ambient＋2.2(±0.5)℃; ET),and their combination (ECT) under highfrigid conditions of West Sichuan Province.The results showed that in comparing with the control,treatments EC and ET increased the number of rhizospheric bacteria by 35%,164% and 312%,and 30%,115% and 209% in June,August and October,respectively,but had little effects on the numbers of rhizospheric actinomycetes and fungi.In treatment ECT,the numbers of rhizospheric actinomycetes and fungi increased by 49%,50% and 96%,and 151%,57% and 48% in June,August and October,respectively,while that of rhizospheric bacteria had little variation.EC,ET and ECT had significant effects on the total number of rhizospheric microbes,with the R/S being 1.93,1.27 and 1.46,respectively,but had little effects on non-rhizospheric microbes.

Key words: Hyporhamphus sajori, Maintenance ration, Conversion efficiency

肖玲¹;王开运^1,2;张远彬¹;吴福忠¹;鲁叶江¹. 岷江冷杉根际土壤微生物对大气CO₂浓度和温度升高的响应[J]. 应用生态学报.

XIAO Ling¹;WANG Kaiyun^1,2;ZHANG Yuanbin¹;WU Fuzhong¹;LU Yejiang¹. Responses of microbes in rhizospheric soil of Abies faxoniana to elevated atmospheric CO₂ concentration and temperature[J]. Chinese Journal of Applied Ecology.

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[3]	孙耀, 张波, 郭学武, 王俊, 唐启升. 黑鲪的生长和生态转换效率及其主要影响因素 [J]. 应用生态学报, 1999, 10(5): 627-629.

岷江冷杉根际土壤微生物对大气CO₂浓度和温度升高的响应

Responses of microbes in rhizospheric soil of Abies faxoniana to elevated atmospheric CO₂ concentration and temperature

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