IGSNRR OpenIR
effectsofsimulatednh4depositiononco2fluxesinthehulunbuirmeadowsteppeofinnermongoliachina
Liu Xingren1; Zhang Leiming2; Zhang Caihong3; Ren Jianqiang4; Li Shenggong2
2015
Source Publicationjournalofresourcesandecology
ISSN1674-764X
Volume6Issue:3Pages:129
AbstractAtmospheric nitrogen (N) deposition may affect carbon (C) sequestration in terrestrial ecosystem. The main objective of this paper was to test the hypothesis that N addition would increase CO_2 emission in the N limited meadow steppe in Inner Mongolia, China. Response of CO_2 lfuxes to simulated N deposition was studied in the growing season of 2008 and 2009 by static chamber and gas chromatograph techniques. Paralel to the lfux mea-surements, soil temperature, soil moisture, TOC, DOC, soil NH_4~+ and NO_3~- were measured at the same time. The results indicated that two-year N additions had no signiifcant effect on NH_4~+, but slightly increased NO_3~- in the later period. The HN treatment tended to increase CO_2 lfuxes in the two years, and LN treatment tended to decrease CO_2 lfuxes in 2008, and shifted to increase CO_2 lfuxes in later growing season of 2009. N addition signiifcantly in-creased the aboveground biomass and root biomass. The correlation between CO_2 lfuxes and moisture or temperature factors did not signiifcantly change due to N addition, but N addition enhanced the moisture sensitivity of CO_2 lfuxes as wel as the temperature sensitivity of CO_2 lfuxes. These results suggest that the increasing ammonium N deposition would be likely to stimulate CO_2 lfuxes in the meadow steppe of Inner Mongolia, China.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/127126
Collection中国科学院地理科学与资源研究所
Affiliation1.Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences
2.中国科学院地理科学与资源研究所
3.山东农业大学
4.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences
Recommended Citation
GB/T 7714
Liu Xingren,Zhang Leiming,Zhang Caihong,et al. effectsofsimulatednh4depositiononco2fluxesinthehulunbuirmeadowsteppeofinnermongoliachina[J]. journalofresourcesandecology,2015,6(3):129.
APA Liu Xingren,Zhang Leiming,Zhang Caihong,Ren Jianqiang,&Li Shenggong.(2015).effectsofsimulatednh4depositiononco2fluxesinthehulunbuirmeadowsteppeofinnermongoliachina.journalofresourcesandecology,6(3),129.
MLA Liu Xingren,et al."effectsofsimulatednh4depositiononco2fluxesinthehulunbuirmeadowsteppeofinnermongoliachina".journalofresourcesandecology 6.3(2015):129.
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