Soil warming and nitrogen deposition alter soil organic matter composition at the molecular-level
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| 024 | 7 | 0 | |a 10.1007/s10533-015-0073-8 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s10533-015-0073-8 | ||
| 245 | 0 | 0 | |a Soil warming and nitrogen deposition alter soil organic matter composition at the molecular-level |h [Elektronische Daten] |c [Oliva Pisani, Serita Frey, André Simpson, Myrna Simpson] |
| 520 | 3 | |a Rising temperatures and nitrogen (N) deposition, both aspects of global environmental change, are proposed to alter soil organic matter (SOM) biogeochemistry. For example, increased plant productivity and enhanced microbial decomposition of litter and SOM may reduce soil carbon stocks and fertility. To better understand SOM biogeochemical shifts at the molecular-level, we employed an array of biomarker and nuclear magnetic resonance (NMR) techniques to investigate the composition and degradation of SOM components in the forest floor and mineral soil horizons of warmed (5°C above average soil temperature) and N fertilized (5gm−2year−1 N applied in the growing season) plots from the soil warming×nitrogen addition study at the Harvard Forest, MA, USA. Biomarker analyses indicated increased plant-derived inputs into the forest floor under N fertilization. Soil warming promoted the decomposition of plant-derived aliphatic and cyclic compounds in the forest floor. Cutin degradation was observed in the heated forest floor which also exhibited relatively higher microbial activity. Lignin oxidation was also observed but was most pronounced in the mineral horizon of the heated plots. These results suggest that continued soil warming may promote the degradation of lignin- and cuticle-derived SOM. N fertilization also enhanced lignin oxidation but to a lesser extent likely due to a decline in microbial activity. 1H NMR spectra of the mineral soils revealed enrichment of plant-derived alkyl structures and microbial-derived organic matter with both soil warming and N fertilization. Overall, this study shows that the decomposition and accumulation of molecularly distinct SOM components occurs with soil warming and N amendment and may subsequently alter soil biogeochemical cycling. | |
| 540 | |a Springer International Publishing Switzerland, 2015 | ||
| 690 | 7 | |a Lignin |2 nationallicence | |
| 690 | 7 | |a Cutin |2 nationallicence | |
| 690 | 7 | |a Suberin |2 nationallicence | |
| 690 | 7 | |a Soil organic matter turnover |2 nationallicence | |
| 690 | 7 | |a Biomarkers |2 nationallicence | |
| 690 | 7 | |a Nuclear magnetic resonance |2 nationallicence | |
| 700 | 1 | |a Pisani |D Oliva |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | |
| 700 | 1 | |a Frey |D Serita |u Department of Natural Resources and the Environment, University of New Hampshire, 03824, Durham, NH, USA |4 aut | |
| 700 | 1 | |a Simpson |D André |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | |
| 700 | 1 | |a Simpson |D Myrna |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | |
| 773 | 0 | |t Biogeochemistry |d Springer International Publishing |g 123/3(2015-04-01), 391-409 |x 0168-2563 |q 123:3<391 |1 2015 |2 123 |o 10533 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s10533-015-0073-8 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s10533-015-0073-8 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Pisani |D Oliva |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Frey |D Serita |u Department of Natural Resources and the Environment, University of New Hampshire, 03824, Durham, NH, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Simpson |D André |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Simpson |D Myrna |u Department of Physical and Environmental Sciences, University of Toronto, 1265 Military Trail, M1C 1A4, Toronto, ON, Canada |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Biogeochemistry |d Springer International Publishing |g 123/3(2015-04-01), 391-409 |x 0168-2563 |q 123:3<391 |1 2015 |2 123 |o 10533 | ||