文章摘要
施翠娥,艾弗逊,汪承润,颜守保,车运城.大气CO2和O3升高对菜地土壤酶活性和微生物量的影响[J].农业环境科学学报,2016,35(6):1103-1109.
大气CO2和O3升高对菜地土壤酶活性和微生物量的影响
Effects of elevated atmospheric CO2 and O3 on soil enzyme activities and microbial biomass
投稿时间:2016-03-28  
DOI:10.11654/jaes.2016.06.012
中文关键词: 开顶式气室(OTC)  臭氧  二氧化碳  土壤理化性质  土壤微生物量  土壤酶
英文关键词: open top chamber(OTC)  ozone(O3)  carbon dioxide(CO2)  soil physicochemical properties  soil microbial biomass  soil enzymes
基金项目:国家自然科学基金项目(31501461);污染控制与资源化研究国家重点实验室开放课题项目(PCRRF12014);安徽省高校自然科学基金重点项目(KJ2015A279);2016年高校优秀中青年骨干人才国内外访学研修重点项目(gxfxZD2016205)
作者单位E-mail
施翠娥 淮南师范学院生物工程学院, 安徽 淮南 232038  
艾弗逊 南京大学环境学院, 污染控制与资源化研究国家重点实验室, 南京 210023  
汪承润 淮南师范学院生物工程学院, 安徽 淮南 232038 chengrunwang@163.com 
颜守保 淮南师范学院生物工程学院, 安徽 淮南 232038  
车运城 淮南师范学院生物工程学院, 安徽 淮南 232038  
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中文摘要:
      利用OTC平台和青菜盆栽实验,探索[CO2]、[O3]或[CO2+O3]升高条件下,土壤理化性质、微生物量和土壤酶活性的变化,以期获得未来大气CO2或/和O3升高对土壤微生态系统的风险性。结果表明,[CO2]升高不同程度地提高了土壤的可溶性有机碳(DOC)、可溶性有机氮(DON)、总磷(TP)、总碳(TC)、铵态氮(AN)、硝态氮(NN)含量和含水量(SWC),进而不同程度地提高了土壤微生物量碳(MBC)、微生物量氮(MBN)含量以及土壤蛋白酶(PRA)、蔗糖酶(SA)、脲酶(UA)、多酚氧化酶(POA)、酸性磷酸酶(APA)和中性磷酸酶(NPA)活性。相反,[O3]升高不同程度降低了土壤DOC、TP、TK、TC、TN、AN、NN、SWC、MBC和MBN含量,提高了MBC/MBN比值,在不同程度上降低了土壤PRA、SA、UA、POA、APA 和NPA酶活性。而[CO2+O3]在一定程度上消减了[O3]对土壤微生物量和酶活性的抑制作用,也降低了[CO2]升高对土壤微生物量和酶活性的刺激效应。因此,土壤微生物量和土壤酶活性的变化可用于评价未来大气CO2或/和O3升高对菜地土壤微生态环境的影响。
英文摘要:
      Pot cultivation of green vegetables was performed in Open Top Chamber(OTC) platform to investigate the effects of elevated [CO2], [O3] or [CO2+O3] on soil physicochemical properties, microbial biomass and soil enzyme activities. And thus to explore the ecological risk of elevated atmospheric CO2 or/and O3 on soil microbial systems in the future. The results showed that the elevated[CO2] increased the contents of dissolved organic carbon(DOC), dissolved organic nitrogen(DON), total phosphorus(TP), total carbon(TC), ammonium nitrogen(AN), nitric nitrogen(NN), and soil water content(SWC) to some extent. And thus differentially promoted the contents of microbial biomass carbon(MBC), microbial biomass nitrogen(MBN) as well as activities of soil protease(PRA), sucrase(SA), urease(UA), phenol oxidase(POA), acid phosphatase(APA) and neutral phosphatase(NPA) in the soils. Contrarily, the elevated [O3] reduced the contents of DOC, TP, TK, TC, TN, AN, NN, SWC, MBC and MBN to some extent, increased ratios of MBC/MBN, and contributed to the decreased activities of PRA, SA, UA, POA, APA and NPA to some extent. However, to some extent, [CO2+O3] alleviated the inhibition of the soil microbial biomass and soil enzyme activities by the elevation of [O3], and also limited the activation by [CO2]. Meanwhile, the elevation of [CO2], [O3] or [CO2+O3] did not change the tendency of the soil physicochemical properties, microbial biomass and enzyme activities. Therefore, the unusual alteration of soil microbial biomass and soil enzyme activities can be used for assessment of the effects of elevated atmospheric CO2 or/and O3 on soil microbial environment of vegetable fields in the future.
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