| 近地层臭氧浓度升高对麦田土壤微生物群落功能多样性的影响 |
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| 引用本文： | 余永昌,林先贵,张晶,李全胜,朱建国.近地层臭氧浓度升高对麦田土壤微生物群落功能多样性的影响[J].应用与环境生物学报,2012(2):309-314. |
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| 作者姓名： | 余永昌 林先贵 张晶 李全胜 朱建国 |
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| 作者单位： | 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室/南京土壤研究所-香港浸会大学土壤与环境联合开放实验室;中国科学院研究生院;南京农业大学生命科学学院农业部农业环境微生物工程重点开放实验室 |
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| 基金项目： | 国家自然科学基金项目(No.40771202);中国科学院知识创新方向项目(No.KZCX2-EW-414);中国科学院国际合作重点项目(No.GJHZ0748);国家科技部国际科技合作计划项目(No.2009DFA31110);日本环境厅全球环境研究基金项目(中日合作)(No.C-062)资助~~ |
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| 摘 要： | 利用中国臭氧FACE(Free-air O3concentration enrichment,开放式空气臭氧浓度增高)试验平台,通过测定麦季土壤水溶性有机碳含量、土壤呼吸强度和BIOLOG指标,研究了近地层臭氧浓度升高50%条件下(~70 nmol mol-1),麦田土壤微生物功能多样性的响应.结果发现,臭氧浓度升高下麦田土壤水溶性有机碳含量提高,土壤微呼吸强度增加,平均吸光值显著高于对照(P<0.05).多样性指数结果显示,臭氧浓度升高对麦田土壤微生物丰富度和优势度指数没有显著影响,但是臭氧处理下均一度指数显著高于对照(P<0.05);主成分分析显示,相对于其它碳源,臭氧浓度升高对麦田土壤微生物的糖类物质利用能力的影响最大.研究揭示了1.5倍的近地层臭氧浓度增强了麦田土壤微生物碳源利用能力,特别是非优势微生物.
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| 关 键 词： | 臭氧浓度升高 麦田 水溶性有机碳 呼吸强度 土壤微生物功能多样性 |
Effect of Elevated Surface O3 Concentration on Soil Microbial Functional Diversity in Wheat Field |
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| YU Yongchang,LIN Xiangui,ZHANG Jing,LI Quansheng,& ZHU Jianguo.Effect of Elevated Surface O3 Concentration on Soil Microbial Functional Diversity in Wheat Field[J].Chinese Journal of Applied and Environmental Biology,2012(2):309-314. |
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| Authors: | YU Yongchang LIN Xiangui ZHANG Jing LI Quansheng & ZHU Jianguo |
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| Institution: | 1(1State Key Laboratory of Soil and Sustainable Agriculture/Joint Open Laboratory of Soil and Environment,Hong Kong Baptist University & Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China)(2Graduate University of Chinese Academy of Sciences,Beijing 100049,China)(3Key Laboratory for Microbiological Engineering of Agricultural Environment,Ministry of Agriculture,College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | The effect of elevated surface O3concentration(~70 nmol mol-1) on soil microbial functional diversity was investigated by determining water-solution organic carbon(WSOC) content,soil respiration intension and BIOLOG in China O3-FACE(Free-air ozone concentration enrichment) field based on a rice/wheat rotation system.The results showed that with the enhancing of O3concentration,the WSOC content,soil respiration intension and AWCD(average well colour development) were significantly increased(P<0.05).Diversity indexes showed that with the enhancing of O3 concentration,Shannon and Simpson indices had no differences,but McIntosh indices was significantly increased(P<0.05).The PCA results showed that the elevated O3 concentration significantly affected the soil microbial ability of utilizing glucide and better than any other substrates.This research suggested that elevated O3 concentration(~70 nmol mol-1) significantly increased soil microbial functional diversity in wheat field. |
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| Keywords: | elevated O3 concentration wheat field water-soluble organic carbon respiratory intensity soil microbial functional diversity |
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