Simulated Nitrogen Deposition Reduces CH4 Uptake and Increases N2O Emission from a Subtropical Plantation Forest Soil in Southern China
Wang, YS; Cheng, SL; Fang, HJ; Yu, GR; Xu, MJ; Dang, XS; Li, LS; Wang, L
2014
Source PublicationPLOS ONE
ISSN1932-6203
Volume9Issue:4Pages:-
AbstractTo date, few studies are conducted to quantify the effects of reduced ammonium (NH4+) and oxidized nitrate (NO3-) on soil CH4 uptake and N2O emission in the subtropical forests. In this study, NH4Cl and NaNO3 fertilizers were applied at three rates: 0, 40 and 120 kg N ha(-1) yr(-1). Soil CH4 and N2O fluxes were determined twice a week using the static chamber technique and gas chromatography. Soil temperature and moisture were simultaneously measured. Soil dissolved N concentration in 0-20 cm depth was measured weekly to examine the regulation to soil CH4 and N2O fluxes. Our results showed that one year of N addition did not affect soil temperature, soil moisture, soil total dissolved N (TDN) and NH4+-N concentrations, but high levels of applied NH4Cl and NaNO3 fertilizers significantly increased soil NO3 (-)-N concentration by 124% and 157%, respectively. Nitrogen addition tended to inhibit soil CH4 uptake, but significantly promoted soil N2O emission by 403% to 762%. Furthermore, NH4+-N fertilizer application had a stronger inhibition to soil CH4 uptake and a stronger promotion to soil N2O emission than NO3--N application. Also, both soil CH4 and N2O fluxes were driven by soil temperature and moisture, but soil inorganic N availability was a key integrator of soil CH4 uptake and N2O emission. These results suggest that the subtropical plantation soil sensitively responses to atmospheric N deposition, and inorganic N rather than organic N is the regulator to soil CH4 uptake and N2O emission.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordQINGHAI-TIBETAN PLATEAU ; GREENHOUSE-GAS FLUXES ; ALPINE MEADOW SOIL ; METHANE OXIDATION ; ATMOSPHERIC METHANE ; SPRUCE FOREST ; OXIDE FLUXES ; ENVIRONMENTAL-FACTORS ; PINE PLANTATION ; LAND-USE
Indexed BySCI
Language英语
WOS IDWOS:000334160900036
PublisherPUBLIC LIBRARY SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44555
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Wang, YS,Cheng, SL,Fang, HJ,et al. Simulated Nitrogen Deposition Reduces CH4 Uptake and Increases N2O Emission from a Subtropical Plantation Forest Soil in Southern China[J]. PLOS ONE,2014,9(4):-.
APA Wang, YS.,Cheng, SL.,Fang, HJ.,Yu, GR.,Xu, MJ.,...&Wang, L.(2014).Simulated Nitrogen Deposition Reduces CH4 Uptake and Increases N2O Emission from a Subtropical Plantation Forest Soil in Southern China.PLOS ONE,9(4),-.
MLA Wang, YS,et al."Simulated Nitrogen Deposition Reduces CH4 Uptake and Increases N2O Emission from a Subtropical Plantation Forest Soil in Southern China".PLOS ONE 9.4(2014):-.
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