The interactive effect of temperature and fertilizer types determines the dominant microbes in nitrous oxide emissions and the dicyandiamide efficacy in a vegetable soil
作者机构：Zhejiang Univ Coll Environm & Resource Sci Zhejiang Prov Key Lab Agr Resources & Environm Hangzhou 310058 Peoples R China Shandong Normal Univ Coll Geog & Environm Jinan 250014 Peoples R China Ctr Cooperat Int Rech Agron Dev CIRAD UMR Eco & Sols Hanoi Vietnam Univ Montpellier UMR Inst Natl Rech Agr Alimentat & Environm INRAE Inst Rech Dev IRD Eco & SolsCIRADMontpellier SupAgro F-34060 Montpellier France Alliance Biodivers Int & Int Ctr Trop Agr CIAT Asia Hub Common Microbial Biotechnol Platform CMBP Hanoi Vietnam Deakin Univ Fac Sci Engn & Built Environm Sch Life & Environm Sci Burwood Vic 3125 Australia Chinese Acad Trop Agr Sci Rubber Res Inst Danzhou 571737 Peoples R China La Trobe Univ La Trobe Inst Sustainable Agr & Food Dept Anim Plant & Soil Sci Bundoora Vic 3086 Australia
出 版 物：《SOIL ECOLOGY LETTERS》 (土壤生态学快报（英文）)
年 卷 期：2024年第6卷第3期
页 面：230213-230213页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 090301[农学-土壤学]
基 金：National Key Research and Development Program of China [2022YFD1900602] Provincial Key Research and Development Program of Zhejiang [2022C02046] Zhejiang Provincial Natural Science Foundation of China [LR23D010002] National Natural Science Foundation of China Natural Science Foundation of Shandong Province [ZR202102260221]
主 题：nitrogen fertilizer microorganisms nitrification inhibitor bacteria archaea fungi AMMONIA-OXIDIZING BACTERIA N2O EMISSIONS NITRIFICATION INHIBITOR HETEROTROPHIC NITRIFICATION NICHE DIFFERENTIATION ARCHAEA GRASSLAND COMMUNITY GROWTH DENITRIFICATION
摘 要：Dicyandiamide decreased N2O emissions even under 40 degrees *** oxidizers and nirS were well adapted to 40 degrees C in manured *** nirK tolerated high temperature better in urea than manure *** to nosZII, nosZI adapted to all temperature regardless of ***-denitrifier dominated N2O emissions at high temperature in fertilized *** waves associated with global warming and extreme climates would arouse serious consequences on nitrogen (N) cycle. However, the responses of the functional guilds to different temperatures, especially high temperature and the cascading effect on N2O emissions remain unclear. An incubation study was conducted to examine the effect of different temperatures (20 degrees C, 30 degrees C, and 40 degrees C) and fertilizer types (urea and manure) on N2O-producers and N2O-reducers, as well as the efficacy of dicyandiamide (DCD) on N2O emissions in a vegetable soil. Results showed that ammonia oxidizers and nirS-type denitrifiers were well adapted to high temperature (40 degrees C) with manure application, while the fungal nirK-denitrifiers had better tolerance with urea application. The nosZ clade I microbes had a strong adaptability to various temperatures regardless of fertilization type, while the growth of nosZ clade II group microbes in non-fertilized soil (control) were significantly inhibited at higher temperature. The N2O emissions were significantly decreased with increasing temperature and DCD application (up to 60%, even at 40 degrees C). Under high temperature conditions, fungal denitrifiers play a significant role in N-limited soils (non-fertilized) while nirS-type denitrifiers was more important in fertilized soils in N2O emissions, which should be specially targeted when mitigating N2O emissions under global warming climate.
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