Loading…
Soil organic matter fractions as early indicators for carbon stock changes under different land-use?
With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fractionati...
Saved in:
| Published in: | Geoderma 2005, Vol.124 (1), p.143-155 |
|---|---|
| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| cited_by | cdi_FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63 |
|---|---|
| cites | cdi_FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63 |
| container_end_page | 155 |
| container_issue | 1 |
| container_start_page | 143 |
| container_title | Geoderma |
| container_volume | 124 |
| creator | Leifeld, Jens Kögel-Knabner, Ingrid |
| description | With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fractionation (size and density separation) and chemical characterisation (C-to-N ratios, CuO lignin signature,
13C NMR spectroscopy) to identify sensitive SOM fractions in an agricultural system with sandy dystric cambisols in Bavaria, Germany, 7 years after a land-use change. Land-use types included long-term arable land and grassland, and conversion from one system to the other. Soil carbon and nitrogen contents in 0–3 cm increased from 14 to 39 mg organic carbon g
−1 soil, and from 1.7 to 3.9 mg nitrogen g
−1 soil in the following order: permanent arable, conversion grassland to arable, conversion arable to grassland, and permanent grassland. Wet sieving and ultrasonic dispersion with 22 J ml
−1 released 20 μm relative to complete dispersion. The most sensitive fraction, with respect to land-use, was SOM in the fraction >20 μm not released after sequential wet sieving and ultrasonic dispersion. In contrast, the proportion of free light (wet sieving, density |
| doi_str_mv | 10.1016/j.geoderma.2004.04.009 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_16194739</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0016706104001090</els_id><sourcerecordid>16194739</sourcerecordid><originalsourceid>FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63</originalsourceid><addsrcrecordid>eNqFkE-LFDEQxYMoOK5-BclFbz0mme6k-6SyrH9gwYN6DjWVypixJ1lTGWG_vd3MikfhQVHwq3pVT4iXWm210vbNcXugEqieYGuU6rer1PRIbPToTGfNMD0WG7WQnVNWPxXPmI9L65RRGxG-ljTLUg-QE8oTtEZVxgrYUsksgSVBne9lyiEhtFJZxlIlQt2XLLkV_CnxB-QDsTzn5QoZUoxUKTc5Qw7dmentc_Ekwsz04qFeie8fbr5df-puv3z8fP3-toPeqtZpQGumiDGaOLgIzjlr7GCCMco5mkIcYlAh2hHVNEKIrne426sBaB_i3u6uxOvL3rtafp2Jmz8lRpqXQ6ic2Wurp97tpgW0FxBrYa4U_V1NJ6j3Xiu_huqP_m-ofg3Vr1Lr4KsHB2CEeQkqY-J_07Y3w2jGhXt34Wh593ei6hkTZaSQKmHzoaT_Wf0BfX6S4Q</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>16194739</pqid></control><display><type>article</type><title>Soil organic matter fractions as early indicators for carbon stock changes under different land-use?</title><source>ScienceDirect Journals</source><creator>Leifeld, Jens ; Kögel-Knabner, Ingrid</creator><creatorcontrib>Leifeld, Jens ; Kögel-Knabner, Ingrid</creatorcontrib><description>With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fractionation (size and density separation) and chemical characterisation (C-to-N ratios, CuO lignin signature,
13C NMR spectroscopy) to identify sensitive SOM fractions in an agricultural system with sandy dystric cambisols in Bavaria, Germany, 7 years after a land-use change. Land-use types included long-term arable land and grassland, and conversion from one system to the other. Soil carbon and nitrogen contents in 0–3 cm increased from 14 to 39 mg organic carbon g
−1 soil, and from 1.7 to 3.9 mg nitrogen g
−1 soil in the following order: permanent arable, conversion grassland to arable, conversion arable to grassland, and permanent grassland. Wet sieving and ultrasonic dispersion with 22 J ml
−1 released <5% and 60% to 80%, respectively, of the amount of particles >20 μm relative to complete dispersion. The most sensitive fraction, with respect to land-use, was SOM in the fraction >20 μm not released after sequential wet sieving and ultrasonic dispersion. In contrast, the proportion of free light (wet sieving, density <1.8 g cm
−3) and occluded light (ultrasonic dispersion with 22 J ml
−1, <1.8 g cm
−3) particulate organic matter (POM) showed no clear response to land-use. The structural composition of POM indicated its vegetation origin with a selective enrichment of lignin and a loss of O-alkyl C relative to its plant precursors. Decomposition of the occluded light POM was only slightly advanced relative to the free light POM. In mineral fractions <20 μm, SOM was significantly more transformed than in the coarse fractions, as shown by NMR spectroscopy; however, it revealed no specific land-use pattern. An exception to this was the proportion of O-alkyl C in the clay fraction, which increased with SOC content. Ratios of alkyl to O-alkyl C in mineral fractions <20 μm differentiated samples gave a better differentiation of samples than the C-to-N ratios. We conclude that neither free nor occluded light POM are appropriate early indicators for changes in land-use at the investigated sites; however, total SOM, its distribution with depth, and SOM allocated in stable aggregates >20 μm were more sensitive.</description><identifier>ISSN: 0016-7061</identifier><identifier>EISSN: 1872-6259</identifier><identifier>DOI: 10.1016/j.geoderma.2004.04.009</identifier><identifier>CODEN: GEDMAB</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Fundamental and applied biological sciences. Psychology ; Indicators ; Land-use change ; Light fraction ; Lignin ; NMR ; Particulate organic matter ; Soils ; Surficial geology</subject><ispartof>Geoderma, 2005, Vol.124 (1), p.143-155</ispartof><rights>2004 Elsevier B.V.</rights><rights>2005 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63</citedby><cites>FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4022,27921,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16425828$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Leifeld, Jens</creatorcontrib><creatorcontrib>Kögel-Knabner, Ingrid</creatorcontrib><title>Soil organic matter fractions as early indicators for carbon stock changes under different land-use?</title><title>Geoderma</title><description>With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fractionation (size and density separation) and chemical characterisation (C-to-N ratios, CuO lignin signature,
13C NMR spectroscopy) to identify sensitive SOM fractions in an agricultural system with sandy dystric cambisols in Bavaria, Germany, 7 years after a land-use change. Land-use types included long-term arable land and grassland, and conversion from one system to the other. Soil carbon and nitrogen contents in 0–3 cm increased from 14 to 39 mg organic carbon g
−1 soil, and from 1.7 to 3.9 mg nitrogen g
−1 soil in the following order: permanent arable, conversion grassland to arable, conversion arable to grassland, and permanent grassland. Wet sieving and ultrasonic dispersion with 22 J ml
−1 released <5% and 60% to 80%, respectively, of the amount of particles >20 μm relative to complete dispersion. The most sensitive fraction, with respect to land-use, was SOM in the fraction >20 μm not released after sequential wet sieving and ultrasonic dispersion. In contrast, the proportion of free light (wet sieving, density <1.8 g cm
−3) and occluded light (ultrasonic dispersion with 22 J ml
−1, <1.8 g cm
−3) particulate organic matter (POM) showed no clear response to land-use. The structural composition of POM indicated its vegetation origin with a selective enrichment of lignin and a loss of O-alkyl C relative to its plant precursors. Decomposition of the occluded light POM was only slightly advanced relative to the free light POM. In mineral fractions <20 μm, SOM was significantly more transformed than in the coarse fractions, as shown by NMR spectroscopy; however, it revealed no specific land-use pattern. An exception to this was the proportion of O-alkyl C in the clay fraction, which increased with SOC content. Ratios of alkyl to O-alkyl C in mineral fractions <20 μm differentiated samples gave a better differentiation of samples than the C-to-N ratios. We conclude that neither free nor occluded light POM are appropriate early indicators for changes in land-use at the investigated sites; however, total SOM, its distribution with depth, and SOM allocated in stable aggregates >20 μm were more sensitive.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Indicators</subject><subject>Land-use change</subject><subject>Light fraction</subject><subject>Lignin</subject><subject>NMR</subject><subject>Particulate organic matter</subject><subject>Soils</subject><subject>Surficial geology</subject><issn>0016-7061</issn><issn>1872-6259</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNqFkE-LFDEQxYMoOK5-BclFbz0mme6k-6SyrH9gwYN6DjWVypixJ1lTGWG_vd3MikfhQVHwq3pVT4iXWm210vbNcXugEqieYGuU6rer1PRIbPToTGfNMD0WG7WQnVNWPxXPmI9L65RRGxG-ljTLUg-QE8oTtEZVxgrYUsksgSVBne9lyiEhtFJZxlIlQt2XLLkV_CnxB-QDsTzn5QoZUoxUKTc5Qw7dmentc_Ekwsz04qFeie8fbr5df-puv3z8fP3-toPeqtZpQGumiDGaOLgIzjlr7GCCMco5mkIcYlAh2hHVNEKIrne426sBaB_i3u6uxOvL3rtafp2Jmz8lRpqXQ6ic2Wurp97tpgW0FxBrYa4U_V1NJ6j3Xiu_huqP_m-ofg3Vr1Lr4KsHB2CEeQkqY-J_07Y3w2jGhXt34Wh593ei6hkTZaSQKmHzoaT_Wf0BfX6S4Q</recordid><startdate>2005</startdate><enddate>2005</enddate><creator>Leifeld, Jens</creator><creator>Kögel-Knabner, Ingrid</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TV</scope><scope>7U6</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>2005</creationdate><title>Soil organic matter fractions as early indicators for carbon stock changes under different land-use?</title><author>Leifeld, Jens ; Kögel-Knabner, Ingrid</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Indicators</topic><topic>Land-use change</topic><topic>Light fraction</topic><topic>Lignin</topic><topic>NMR</topic><topic>Particulate organic matter</topic><topic>Soils</topic><topic>Surficial geology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Leifeld, Jens</creatorcontrib><creatorcontrib>Kögel-Knabner, Ingrid</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Geoderma</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Leifeld, Jens</au><au>Kögel-Knabner, Ingrid</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Soil organic matter fractions as early indicators for carbon stock changes under different land-use?</atitle><jtitle>Geoderma</jtitle><date>2005</date><risdate>2005</risdate><volume>124</volume><issue>1</issue><spage>143</spage><epage>155</epage><pages>143-155</pages><issn>0016-7061</issn><eissn>1872-6259</eissn><coden>GEDMAB</coden><abstract>With respect to carbon sequestration in soil, attempts have been made to identify soil organic matter (SOM) fractions that respond more rapidly to changes in land-use than bulk SOM, which could thus serve as early indicators for the overall stock change. We used a combination of physical fractionation (size and density separation) and chemical characterisation (C-to-N ratios, CuO lignin signature,
13C NMR spectroscopy) to identify sensitive SOM fractions in an agricultural system with sandy dystric cambisols in Bavaria, Germany, 7 years after a land-use change. Land-use types included long-term arable land and grassland, and conversion from one system to the other. Soil carbon and nitrogen contents in 0–3 cm increased from 14 to 39 mg organic carbon g
−1 soil, and from 1.7 to 3.9 mg nitrogen g
−1 soil in the following order: permanent arable, conversion grassland to arable, conversion arable to grassland, and permanent grassland. Wet sieving and ultrasonic dispersion with 22 J ml
−1 released <5% and 60% to 80%, respectively, of the amount of particles >20 μm relative to complete dispersion. The most sensitive fraction, with respect to land-use, was SOM in the fraction >20 μm not released after sequential wet sieving and ultrasonic dispersion. In contrast, the proportion of free light (wet sieving, density <1.8 g cm
−3) and occluded light (ultrasonic dispersion with 22 J ml
−1, <1.8 g cm
−3) particulate organic matter (POM) showed no clear response to land-use. The structural composition of POM indicated its vegetation origin with a selective enrichment of lignin and a loss of O-alkyl C relative to its plant precursors. Decomposition of the occluded light POM was only slightly advanced relative to the free light POM. In mineral fractions <20 μm, SOM was significantly more transformed than in the coarse fractions, as shown by NMR spectroscopy; however, it revealed no specific land-use pattern. An exception to this was the proportion of O-alkyl C in the clay fraction, which increased with SOC content. Ratios of alkyl to O-alkyl C in mineral fractions <20 μm differentiated samples gave a better differentiation of samples than the C-to-N ratios. We conclude that neither free nor occluded light POM are appropriate early indicators for changes in land-use at the investigated sites; however, total SOM, its distribution with depth, and SOM allocated in stable aggregates >20 μm were more sensitive.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.geoderma.2004.04.009</doi><tpages>13</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0016-7061 |
| ispartof | Geoderma, 2005, Vol.124 (1), p.143-155 |
| issn | 0016-7061 1872-6259 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16194739 |
| source | ScienceDirect Journals |
| subjects | Agronomy. Soil science and plant productions Biological and medical sciences Earth sciences Earth, ocean, space Exact sciences and technology Fundamental and applied biological sciences. Psychology Indicators Land-use change Light fraction Lignin NMR Particulate organic matter Soils Surficial geology |
| title | Soil organic matter fractions as early indicators for carbon stock changes under different land-use? |
| url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-09T19%3A27%3A30IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Soil%20organic%20matter%20fractions%20as%20early%20indicators%20for%20carbon%20stock%20changes%20under%20different%20land-use?&rft.jtitle=Geoderma&rft.au=Leifeld,%20Jens&rft.date=2005&rft.volume=124&rft.issue=1&rft.spage=143&rft.epage=155&rft.pages=143-155&rft.issn=0016-7061&rft.eissn=1872-6259&rft.coden=GEDMAB&rft_id=info:doi/10.1016/j.geoderma.2004.04.009&rft_dat=%3Cproquest_cross%3E16194739%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-a460t-1ac629fcff2f57fa77762652d22077e9df5fd0df68c098adf747c3b05aebdfb63%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=16194739&rft_id=info:pmid/&rfr_iscdi=true |