农业资源与环境学报2016，Vol.35Issue(6)：1103-1109,7.DOI:10.11654/jaes.2016.06.012
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
摘要
Abstract
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 ele-vated 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), ni-tric 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 mi-crobial environment of vegetable fields in the future.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Key words
open top chamber(OTC)/ozone(O3)/carbon dioxide(CO2)/soil physicochemical properties/soil microbial biomass/soil enzymes分类
环境科学引用本文复制引用
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].农业资源与环境学报,2016,35(6):1103-1109,7.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 （）
