Transient nature of rhizosphere carbon elucidated by supercritical freon-22 extraction and 13 C NMR analysis
作者： Felipe G. Sanchez , Maurice M. Bursey
DOI: 10.1016/S0378-1127(01)00589-8
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摘要: Abstract The region immediately adjacent to established roots of mature trees has been termed the “reoccurring rhizosphere” and it hypothesized that organic matter input from fine root turnover, exudates sloughing may result in a build up soil carbon this region. for first-, second- third-order select loblolly pines (Pinus taeda L.) were examined on sandy, loamy sand sandy loam soils. A significant next orders was confirmed substantial (55% increase) first-order soil. However, did not display amount orders. Extraction samples with supercritical freon-22 showed additional highly soluble. Approximately 60% total extracted soils, while approximately 40% qualitative comparison extracts by liquid state 13 C nuclear magnetic resonance had higher relative proportion labile materials (i.e. carbohydrates, proteins, etc.) than bulk This information coupled high solubility suggests be transient nature.
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sci-hub.se 参考文章(28)
Kristiina A. Vogt, Production, Turnover, and Nutrient Dynamics of Above- and Belowground Detritus of World Forests Advances in Ecological Research. ,vol. 15, pp. 303- 377 ,(1986) , 10.1016/S0065-2504(08)60122-1
D. Binkley, S. C. Hart, The Components of Nitrogen Availability Assessments in Forest Soils Advances in Soil Science. pp. 57- 112 ,(1989) , 10.1007/978-1-4613-8847-0_2
D.H. Van Lear, P.R. Kapeluck, Melissa M. Parker, Distribution of Carbon in a Piedmont Soil as Affected by Loblolly Pine Management Carbon Forms and Functions in Forest Soils. pp. 489- 501 ,(2006) , 10.2136/1995.CARBONFORMS.C22
Felipe G. Sanchez, SOIL ORGANIC MATTER AND SOIL PRODUCTIVITY : SEARCHING FOR THE MISSING LINK Ecological studies. ,vol. 128, pp. 543- 556 ,(1998) , 10.1007/978-1-4612-2178-4_29
James Michael Kelly, W. W. McFee, Carbon forms and functions in forest soils. Carbon forms and functions in forest soils.. ,(1995)
The productivity and sustainability of southern forest ecosystems in a changing environment. Springer-Verlag New York Inc.. ,(1998) , 10.1007/978-1-4612-2178-4
Charles Tattersall Smith, A. T. Lowe, Developing systems for integrating bioenergy into environmentally sustainable forestry New Zealand Forest Research Institute. ,(1999)
J. Hassink, Organic matter dynamics and N mineralization in grassland soils. Hassink. ,(1995)
David E. Reichle, Dynamic properties of forest ecosystems Cambridge University Press. ,(1981)
Daniel D. Richter, Daniel Markewitz, Susan E. Trumbore, Carol G. Wells, Rapid accumulation and turnover of soil carbon in a re-establishing forest Nature. ,vol. 400, pp. 56- 58 ,(1999) , 10.1038/21867