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Mechanical insights into the effect of fluctuation in soil moisture on nitrous oxide emissions from paddy soil

文献类型：期刊论文

作者Ma, Lan1,2; Cheng, Yi1; Wang, Jinyang1; Yan, Xiaoyuan1
刊名PADDY AND WATER ENVIRONMENT
出版日期2017-03-01
卷号15期号:2页码:359-369
关键词Nitrous Oxide Rice Soil Soil Moisture Nitrification Denitrification
DOI10.1007/s10333-016-0554-y
文献子类Article
英文摘要Paddy fields are subjected to fluctuating water regimes as a result of the alternate drying and wetting water management, which often incurs a sensitive change in N2O emissions from paddy soils. However, how the soil moisture regulates the emission of N2O from paddy soil remains uncertain. In this study, three incubation experiments were designed to study the effects of constant and fluctuating soil moisture on N2O emission and the sources of N2O emission from paddy soil. Results showed that the N2O emission from paddy soil at 100 % WHC (water-holding capacity) was higher than that at 40, 65, 80, 120, and 160 % WHC, indicating that 100 % WHC was the optimum soil moisture content for N2O emission under the incubation experiment. Small peak of N2O flux appeared when the soil moisture content from 250 % WHC decreased near to 100 % WHC, lower than that triggered by nitrogen (N) fertilization, which was mainly owing to the low NH4 (+) concentration at this period. Nitrification dominated the emissions of N2O from paddy soil at 250 % WHC (54.96 %), higher than that of nitrification-coupled denitrification (6.74 %) and denitrification (38.3 %). The contribution of denitrification to N2O emissions (44.10 %) was equivalent to that of nitrification (44.45 %) in soil at 100 % WHC, which was higher than that of 250 % WHC treatment. In conclusion, the finding suggested that the peak of N2O in paddy soils during midseason aeration could be attributed to the occurrence of optimum soil moisture under sufficient N availability, favorable for the production and accumulation of N2O.
WOS关键词DIRECT N2O EMISSIONS ; RICE-GROWING-SEASON ; FILLED PORE-SPACE ; NITRIFIER DENITRIFICATION ; WATER REGIME ; CARBON-DIOXIDE ; MAINLAND CHINA ; NITRIFICATION ; METHANE ; FIELDS
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000395172800012
资助机构National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; National Natural Science Foundation of China(41425005) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200) ; "Strategic Priority Research Program-Climate Change: Carbon Budget and Relevant Issues" of the Chinese Academy of Sciences(XDA05020200)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/32896]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Anhui Key Lab Nanomat & Nanotechnol, Ctr Environm & Energy Nanomat, Key Lab Mat Phys,Inst Solid State Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Lan,Cheng, Yi,Wang, Jinyang,et al. Mechanical insights into the effect of fluctuation in soil moisture on nitrous oxide emissions from paddy soil[J]. PADDY AND WATER ENVIRONMENT,2017,15(2):359-369.
APA Ma, Lan,Cheng, Yi,Wang, Jinyang,&Yan, Xiaoyuan.(2017).Mechanical insights into the effect of fluctuation in soil moisture on nitrous oxide emissions from paddy soil.PADDY AND WATER ENVIRONMENT,15(2),359-369.
MLA Ma, Lan,et al."Mechanical insights into the effect of fluctuation in soil moisture on nitrous oxide emissions from paddy soil".PADDY AND WATER ENVIRONMENT 15.2(2017):359-369.

入库方式： OAI收割

来源：合肥物质科学研究院

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