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Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition
Fang, Huajun1; Cheng, Shulan2; Yu, Guirui1; Zheng, Jiaojiao2; Zhang, Peilei2; Xu, Minjie2; Li, Yingnian3; Yang, Xueming4
2012-02-01
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume351Issue:1-2Pages:177-190
SubtypeArticle
AbstractTo assess the effects of atmospheric N deposition on the C budget of an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, it is necessary to explore the responses of soil-atmosphere carbon dioxide (CO2) exchange to N addition. Based on a multi-form, low-level N addition experiment, soil CO2 effluxes were monitored weekly using the static chamber and gas chromatograph technique. Soil variables and aboveground biomass were measured monthly to examine the key driving factors of soil CO2 efflux. The results showed that low-level N input tended to decrease soil moisture, whereas medium-level N input maintained soil moisture. Three-year N additions slightly increased soil inorganic N pools, especially the soil NH (4) (+) -N pool. N applications significantly increased aboveground biomass and soil CO2 efflux; moreover, this effect was more significant from NH (4) (+) -N than from NO (3) (-) -N fertilizer. In addition, the soil CO2 efflux was mainly driven by soil temperature, followed by aboveground biomass and NH (4) (+) -N pool. These results suggest that chronic atmospheric N deposition will stimulate soil CO2 efflux in the alpine meadow on the Qinghai-Tibetan Plateau by increasing available N content and promoting plant growth.; To assess the effects of atmospheric N deposition on the C budget of an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, it is necessary to explore the responses of soil-atmosphere carbon dioxide (CO2) exchange to N addition.
KeywordAtmospheric n Deposition Soil n Availability Soil Co2 Efflux Driving Factors Alpine Meadow
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordECOSYSTEM CARBON EXCHANGE ; NITROGEN DEPOSITION ; TEMPERATE STEPPE ; TROPICAL FOREST ; SOUTHERN CHINA ; ORGANIC-CARBON ; N2O EMISSIONS ; RESPIRATION ; FERTILIZATION ; GRASSLANDS
Indexed BySCI
Language英语
WOS Research AreaAgriculture ; Plant Sciences
WOS SubjectAgronomy ; Plant Sciences ; Soil Science
WOS IDWOS:000299959100013
Citation statistics
Cited Times:44[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/3726
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.CAS, NW Plateau Inst Biol, Xining 810001, Qinghai, Peoples R China
4.Agr & Agri Food Canada, Greenhouse & Proc Crops Res Ctr, Harrow, ON N0R 1G0, Canada
Recommended Citation
GB/T 7714
Fang, Huajun,Cheng, Shulan,Yu, Guirui,et al. Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition[J]. PLANT AND SOIL,2012,351(1-2):177-190.
APA Fang, Huajun.,Cheng, Shulan.,Yu, Guirui.,Zheng, Jiaojiao.,Zhang, Peilei.,...&Yang, Xueming.(2012).Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition.PLANT AND SOIL,351(1-2),177-190.
MLA Fang, Huajun,et al."Responses of CO2 efflux from an alpine meadow soil on the Qinghai Tibetan Plateau to multi-form and low-level N addition".PLANT AND SOIL 351.1-2(2012):177-190.
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