World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Long-term Nitrogen Addition Decreases Carbon Leaching in a Nitrogen-rich Forest Ecosystem : Volume 10, Issue 6 (18/06/2013)

By Lu, X.

Click here to view

Book Id: WPLBN0004003065
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Long-term Nitrogen Addition Decreases Carbon Leaching in a Nitrogen-rich Forest Ecosystem : Volume 10, Issue 6 (18/06/2013)  
Author: Lu, X.
Volume: Vol. 10, Issue 6
Language: English
Subject: Science, Biogeosciences
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Yu, G., Gilliam, F. S., Li, L., Chen, H., Mo, J., Lu, X., & Mao, Q. (2013). Long-term Nitrogen Addition Decreases Carbon Leaching in a Nitrogen-rich Forest Ecosystem : Volume 10, Issue 6 (18/06/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine how long-term N addition affects DOC dynamics below the primary rooting zones (the upper 20 cm soils) in typically N-rich lowland tropical forests. We have a primary assumption that long-term continuous N addition minimally affects DOC concentrations and effluxes in N-rich tropical forests. Experimental N addition was administered at the following levels: 0, 50, 100 and 150 kg N ha−1 yr−1, respectively. Results showed that seven years of N addition significantly decreased DOC concentrations in soil solution, and chemo-physical controls (solution acidity change and soil sorption) rather than biological controls may mainly account for the decreases, in contrast to other forests. We further found that N addition greatly decreased annual DOC effluxes from the primary rooting zone and increased water-extractable DOC in soils. Our results suggest that long-term N deposition could increase soil C sequestration in the upper soils by decreasing DOC efflux from that layer in N-rich ecosystems, a novel mechanism for continued accumulation of soil C in old-growth forests.

Summary
Long-term nitrogen addition decreases carbon leaching in a nitrogen-rich forest ecosystem

Excerpt
Aber, J., McDowell, W., Nadelhoffer, K., Magill, A., Berntson, G., Kamakea, M., McNulty, S., Currie, W., Rustad, L., and Fernandez, I.: 1998: Nitrogen saturation in temperate forest ecosystems, Hypotheses revisited, Bioscience, 48, 921–934, 1998.; Aber, J. D., Goodale, C. L., Ollinger, S. V., Smith, M.-L., Magil, A. H., Martin, M. E., Hallett, R. A., and Stoddard, J. L.: Is nitrogen deposition altering the nitrogen status of Northeastern forests?, Bioscience, 53, 375–389, 2003.; Adams, A. B., Harrison, R. B., Sletten, R. S., Strahm, B. D., Turnblom, E. C., and Jensen, C. M.: Nitrogen-fertilization impacts on carbon sequestration and flux in managed coastal Douglas-fir stands of the Pacific Northwest, Forest Ecol. Manag., 220, 313–325, 2005.; Aitkenhead, J. A., and McDowell, W. H.: Soil C:N ratio as a predictor of annual riverine DOC flux at local and global scales, Global Biogeochem. Cy., 14, 127–138, 2000.; Báez, S., Fargione, J., Moore, D. I., Collins, S. L., and Gosz, J. R.: Atmospheric nitrogen deposition in the northern Chihuahuan Desert: temporal trends and potential consequences, J. Arid Environ., 68, 640–651, 2007.; Boudot, J. P., Belhadjbrahim, A., Steiman, R., and Seiglemurandi, F.: Biodegradation of synthetic organo-metallic complexes of iron and aluminium with selected metal to carbon ratios, Soil Biol. Biochem., 21, 961–966, 1989.; Bowman, W. D., Cleveland, C. C., Halada, L., Hresko, J., and Baron, J. S.: Negative impact of nitrogen deposition on soil buffering capacity, Nat. Geosci., 1, 767–770, 2008.; Brookshire, E. N. J., Gerber, S., Menge, D. N. L., and Hedin, L. O.: Large losses of inorganic nitrogen from tropical rainforests suggest a lack of nitrogen limitation, Ecol. Lett., 15, 9–16, 2012.; Bragazza, L., Freeman, C., Jones, T., Rydin, H., Limpens, J., Fenner, N., Ellis, T., Gerdol, R., Hájek, M., Hájek, T., Iacumin, P., Kutnar, L., Tahvanainen, T., and Toberman, H.: Atmospheric nitrogen deposition promotes carbon loss from peat bogs, P. Natl. Acad. Sci. USA, 103, 19386–19389, 2006.; Cao, H. L., Huang, Z. L., Zhang, L. Y., and Kong, G. H.: Vegetation Map of Dinghushan Nature Reserve, In Tropical and Subtropical Forest Ecosystem, Vo l9 (ed. Dinghushan Forest Ecosystem Research Station), 1–9, China Environmental Science Press, Beijing, 2002 (in Chinese with English abstract).; Carter, M. R. and Gregorich, E. G. (Eds.): Soil Sampling and Methods of Analysis, 2nd Edn., CRC Press, Taylor & Francis, Boca Raton, FL., 1224 pp., ISBN 978-0-8493-3586-0, 2008.; Chapin III, F. S., McFarland, J. W., McGuire, A. D., Euskirchen, E. S., Ruess, R. W., and Kielland, K.: The changing global carbon cycle: linking plant-soil carbon dynamics to global consequences, J. Ecol., 97, 840–850, 2009.; Chantigny, M. H., Angers, D. A., Prévost, D., Simard, R. R., and Chalifour, F.-P.: Dynamics of soluble organic C and C-mineralization in cultivated soils with varying N fertilization, Soil Biol. Biochem., 31, 543–550, 1999.; Clark, C. M. and Tilman, D.: Loss of plant species after chronic low-level nitrogen deposition to prairie grasslands, Nature, 451, 712–715, 2008.; Currie, W. S., Aber, J. D., McDowell, W. H., Boone, R. D., and Magill, A. H.: Vertical transport of dissolved organic C and N under long-term N amendments in pine and hardwood forests, Biogeochemistry, 35, 471–505, 1996.; Cusack, D. F., Torn, M. S., McDowell, W. H., and Silver, W.: The response of heterotrophic activity and carbon cycling to nitrogen additions and warming in two tropical soils, Glob. Change Biol., 16, 2555–2572, 2010.; Corre, M. D., Veldkamp, E., Arnold, J., and Wright, S. J.: Impact of elevated N input on soil N cycling and losses in lowland and montane forests in Panama, Ecology, 91, 1715–1729, 2010.; de Vries, W., Solberg, S., Dobbertin, M., Sterba, H., Laubhann, D., van Oijen, M., Evans C., Gundersen, P., Kros, J., Wamelink, G. W. W., Reinds, G. J., and Sutton, M. A.: The impact of nitrogen deposition on carbon sequestration by European forests and

 

Click To View

Additional Books


  • Exploring the Sensitivity of Soil Carbon... (by )
  • Sea Surface Salinity Variability from a ... (by )
  • Skeletal Mineralogy of Coral Recruits Un... (by )
  • Nitrous Oxide Fluxes from Tropical Peat ... (by )
  • Net Ecosystem Exchange of Carbondioxide ... (by )
  • Data-based Assessment of Environmental C... (by )
  • The Philippine Journal of Science (by )
  • Chemosymbiotic Species from the Gulf of ... (by )
  • Science; Numbered Serries Volume: 42 Jul... (by )
  • Deposition of Nitrogen and Phosphorus on... (by )
  • Comparison of Seawifs and Modis Time Ser... (by )
  • Atmospheric Reactive Nitrogen Concentrat... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.