This Is Auburn

Show simple item record

Effect of nitrogen deposition on China’s terrestrial carbon uptake in the context of multifactor environmental changes


Metadata FieldValueLanguage
dc.contributorHanqin Tian, tianhan@auburn.eduen_US
dc.creatorLu, Chaoqun
dc.creatorTian, Hanqin
dc.creatorLiu, Mingliang
dc.creatorRen, Wei
dc.creatorXu, Xiaofeng
dc.creatorChen, Guangshen
dc.creatorZhang, Chi
dc.date.accessioned2023-09-20T14:34:08Z
dc.date.available2023-09-20T14:34:08Z
dc.date.created2012
dc.identifier10.1890/10-1685.1en_US
dc.identifier.urihttps://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/10-1685.1en_US
dc.identifier.urihttps://esajournals.onlinelibrary.wiley.com/doi/full/10.1890/10-1685.1en_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50540
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-608
dc.description.abstractThe amount of atmospheric nitrogen (N) deposited on the land surface has increased globally and by nearly five times in China from 1901 to 2005. Little is known about how elevated reactive N input has affected the carbon (C) sequestration capability of China’s terrestrial ecosystems, largely due to the lack of reliable data on N deposition. Here we have used a newly developed data set of historical N deposition at a spatial resolution of 10 km3 10 km in combination with other gridded historical information on climate, atmospheric composition, land use, and land management practices to drive a process-based ecosystem model, the dynamic land ecosystem model (DLEM) for examining how increasing N deposition and its interactions with other environmental changes have affected C fluxes and storage in China’s terrestrial ecosystems during 1901–2005. Our model simulations indicate that increased N deposition has resulted in a net C sink of 62 Tg C/yr (1 Tg¼1012 g) in China’s terrestrial ecosystems, totaling up to 6.51 Pg C (1 Pg¼1015 g) in the past 105 years. During the study period, the N-induced C sequestration can compensate for more than 25% of fossil-fuel CO2 emission from China. The largest C sink was found in southeast China, a region that experienced the most significant increase of N deposition in the period 1901–2005. However, the net primary productivity induced by per-unit N deposition (referred to as ecosystem N use efficiency, ENUE, in this paper) has leveled off or declined since the 1980s. This indicates that part of the deposited N may not be invested to stimulate plant growth, but instead leave the ecosystem by various pathways. Except shrubland and northwest/southwest China, signs of N saturation are apparent in the rest major biome types and regions, with ENUE peaking in the 1980s and leveling off or declining thereafter. Therefore, to minimize the excessive N pollution while keeping the N-stimulated C uptake in China’s terrestrial ecosystems, optimized management practices should be taken to increase N use efficiency rather than to keep raising N input level in the near future.en_US
dc.formatPDFen_US
dc.publisherEcological Society of Americaen_US
dc.relation.ispartofEcological Applicationsen_US
dc.relation.ispartofseries1051-0761en_US
dc.rights© 2012. This is the version of record published by John Wiley & Sons, Inc. and is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Lu, C., Tian, H., Liu, M., Ren, W., Xu, X., Chen, G. and Zhang, C., 2012. Effect of nitrogen deposition on China's terrestrial carbon uptake in the context of multifactor environmental changes. Ecological applications, 22(1), pp.53-75.en_US
dc.subjectcarbon dynamics; China; dynamic land ecosystem model; nitrogen deposition; terrestrial ecosystemen_US
dc.titleEffect of nitrogen deposition on China’s terrestrial carbon uptake in the context of multifactor environmental changesen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume22en_US
dc.citation.issue1en_US
dc.citation.spage53en_US
dc.citation.epage75en_US
dc.description.statusPublisheden_US
dc.description.peerreviewyesen_US

Files in this item

Show simple item record