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[1]杨浩宇 张潇 党迪 郑灵斯 杨沁宇 于涌杰**.纳米氧化铁对水稻土CH4和N2O排放及其微生物的影响[J].应用与环境生物学报,2021,27(04):1-15.[doi:10.19675/j.cnki.1006-687x.2020.07031]
 YANG Haoyu,ZHANG Xiao,DANG Di,et al.Effects of iron oxide nanoparticles on CH4 and N 2O emissions and microbial communities in two typical paddy soils[J].Chinese Journal of Applied & Environmental Biology,2021,27(04):1-15.[doi:10.19675/j.cnki.1006-687x.2020.07031]
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纳米氧化铁对水稻土CH4和N2O排放及其微生物的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
27卷
期数:
2021年04期
页码:
1-15
栏目:
研究论文
出版日期:
2021-08-25

文章信息/Info

Title:
Effects of iron oxide nanoparticles on CH4 and N 2O emissions and microbial communities in two typical paddy soils
作者:
杨浩宇1 张潇1 党迪1 郑灵斯1 杨沁宇12 于涌杰12**
1南京信息工程大学 南京 210044
2自然资源部/广西岩溶动力学重点实验室,中国地质科学院岩溶地质研究所 桂林 541004
Author(s):
YANG Haoyu1 ZHANG Xiao1 DANG Di1 ZHENG Lingsi1 YANG Qinyu12 & YU Yongjie12**
1 Nanjing University of Information and Technology, Nanjing 210044, China
2 Key Laboratory of Karst Dynamics, MNR & Guangxi, Institute of Karst Geology, CAGS , Guilin 541004, China
关键词:
纳米氧化铁水稻土甲烷氧化亚氮产甲烷古菌反硝化微生物
Keywords:
Iron oxide nanoparticles paddy ecosystem methane nitrous oxide methanogenic archaea denitrifier
DOI:
10.19675/j.cnki.1006-687x.2020.07031
摘要:
纳米氧化铁的广泛应用增加了其不断进入农田生态系统并逐渐累积的可能性,但目前仍缺少纳米氧化铁对土壤温室气体排放影响的研究。采用微宇宙模拟试验,研究不同浓度水平纳米氧化铁颗粒(0.5、5、50、500 mg/kg)对江苏扬州和江西鹰潭地区两种典型水稻土的CH4和N2O气体排放通量的影响,采用实时荧光定量PCR技术解析产甲烷和反硝化过程功能基因的丰度对于纳米氧化铁的响应。结果表明,只有在前3 d培养初期时,添加5 mg/kg 浓度以上纳米氧化铁颗粒条件下,扬州地区典型水稻土的CH4气体排放速率显著增加,鹰潭地区典型水稻土的CH4气体排放速率显著降低。在培养3 d以后,添加0.5 - 500 mg/kg纳米氧化铁颗粒不会显著影响两种水稻土的CH4气体排放速率。在28 d培养期间,添加纳米氧化铁材料未显著改变两种水稻土的N2O气体排放速率。从28 d的累积排放量来看,添加纳米氧化铁对CH4和N2O累积排放量均没有显著影响。荧光定量PCR结果表明,纳米氧化铁对水稻土中产甲烷古菌16S rRNA基因、narG、nirK/nirS、cnorB和nosZ等反硝化功能基因均没有显著影响。本研究表明从对水稻土CH4和N2O气体排放的影响角度来说,纳米级的氧化铁颗粒属于环境友好型纳米材料,其对稻田生态系统中的土壤气体排放不会产生显著性的严重干扰。(图7 表2 参43 )
Abstract:
The extensive application of iron oxide nanoparticles inevitably increases the possibility of its release and accumulation to agroecosystem, but the effects of iron oxide nanoparticles to soil greenhouse gases emissions remain equivocal. In this study, microcosmic simulation experiments were established to investigate the response s of soil CH4 and N 2O emissions to different levels of iron oxide nanoparticles (i.e. 0.5, 5, 50, 500 mg/kg) in two typical paddy soils from Yangzhou and Yingtan . Real-time fluorescence quantitative PCR analysis was performed to reveal the abundance of methanogenic and denitrification genes to iron oxide nanoparticles. The results showed that, in the initial 3 days’ incubation, iron oxide nanoparticles at > 0.5 mg/kg levels could significantly ( P < 0.05) increase the CH 4 emission rate in the soils from Yangzhou but decrease the CH 4 emission rate in the soils from Yingtan. While after 3 days’ anaerobic incubation, 0.5 - 500 mg/kg iron oxide nanoparticles amendments did not significant change CH4 emission rate in both two tested soils ( P > 0.05). No significant responses of N2O emission rate was observed in the two tested soils in 0.5 - 500 mg/kg iron oxide nanoparticles amendment treatments. The amendments of iron oxide nanoparticles had no significant influences on the cumulative emission of CH4 and N 2O gases after 28 days’ incubation. The real-time quantitative PCR results showed the anaerobic incubation with iron oxide nanoparticles did not significantly change the abundance of methanogenic 16S rRNA gene, narG gene, nirK gene, nirS gene, cnorB gene and nosZ gene. In conclusion, in the perspective of the impact on soil CH4 and N 2O emissions, iron oxide nanoparticle is an environmental-friendly material, which will not greatly interfere with soil gas emissions in paddy ecosystem.

相似文献/References:

[1]丁永祯,李志安,邹碧,等.有机酸对珠江三角洲水稻土镉解吸行为的影响[J].应用与环境生物学报,2007,13(03):289.
 DING Yongzhen,et al..Effect of Organic Acids on Cadmium Desorption from Paddy Soil of the Pearl River Delta in China[J].Chinese Journal of Applied & Environmental Biology,2007,13(04):289.

备注/Memo

备注/Memo:
收稿日期 Received: 2020-07-15 接受日期 Accepted: 2020-09-30
国家自然科学基金项目(41501266)和广西岩溶动力学重大科技创新基地开放课题(KDL&Guangxi 202008)资助
**通讯作者 Corresponding author (E-mail: yjyu@nuist.edu.cn)
引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2020-10-05