Evidence for Carbon Saturation in a Highly Structured and Organic-Matter-Rich Soil
DC Field | Value | Language |
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dc.contributor.author | Chung, Haegeun | - |
dc.contributor.author | Ngo, Kathie J. | - |
dc.contributor.author | Plante, Alain F. | - |
dc.contributor.author | Six, Johan | - |
dc.date.accessioned | 2021-09-08T06:13:37Z | - |
dc.date.available | 2021-09-08T06:13:37Z | - |
dc.date.created | 2021-06-11 | - |
dc.date.issued | 2010-01 | - |
dc.identifier.issn | 0361-5995 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/117300 | - |
dc.description.abstract | Recent studies suggest that mineral soils of temperate ecosystems have a limit in C sequestration capacity, and we reasoned that C saturation will be most evident in soils that are already rich in soil organic C (SOC) and have been exposed to a broad range of C inputs. Therefore, we determined sod C saturation in an agricultural experiment located in Ellerslie, AB, Canada, where organic-matter-rich soils have been cropped to cereal grain for 25 yr. In this experiment, the soils were subject to a broad range of soil C inputs due to a combination of straw retention, tillage, and N fertilization treatments. We determined if C saturation is occurring in soil size fractions that are functionally different. Soils were highly aggregated, with >85% of the sods consisting of macroaggregates. Straw retention, tillage, and N fertilization had no significant effect on the SOC concentration of most soil fractions. Soil organic C concentration of whole soil and soil aggregates isolated from whole sod did not increase with greater sod C inputs. Most of the soil fractions within the large or small macroaggregates did not sequester additional SOC in response to higher soil C inputs. Conversely, SOC concentration in experimental plot soils was significantly lower than that of adjacent grassland soils, which suggests that the maximum C sequestration level for a specific soil type depends on the management practices used. We conclude that C sequestration is governed by C saturation in this highly structured and high-C soil. Our study suggests that soils of temperate ecosystems that are closer to their C saturation capacity may store additional C less effectively than soils that are further away from their saturation capacity. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY | - |
dc.subject | NITROGEN | - |
dc.subject | MANAGEMENT | - |
dc.subject | RESIDUE | - |
dc.subject | SEQUESTRATION | - |
dc.subject | FERTILIZATION | - |
dc.subject | AGGREGATION | - |
dc.subject | STABILIZATION | - |
dc.subject | DECOMPOSITION | - |
dc.subject | PRODUCTIVITY | - |
dc.subject | PHOSPHORUS | - |
dc.title | Evidence for Carbon Saturation in a Highly Structured and Organic-Matter-Rich Soil | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Chung, Haegeun | - |
dc.identifier.doi | 10.2136/sssaj2009.0097 | - |
dc.identifier.scopusid | 2-s2.0-73849129712 | - |
dc.identifier.wosid | 000273579100016 | - |
dc.identifier.bibliographicCitation | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, v.74, no.1, pp.130 - 138 | - |
dc.relation.isPartOf | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | - |
dc.citation.title | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | - |
dc.citation.volume | 74 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 130 | - |
dc.citation.endPage | 138 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Agriculture | - |
dc.relation.journalWebOfScienceCategory | Soil Science | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | MANAGEMENT | - |
dc.subject.keywordPlus | RESIDUE | - |
dc.subject.keywordPlus | SEQUESTRATION | - |
dc.subject.keywordPlus | FERTILIZATION | - |
dc.subject.keywordPlus | AGGREGATION | - |
dc.subject.keywordPlus | STABILIZATION | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
dc.subject.keywordPlus | PRODUCTIVITY | - |
dc.subject.keywordPlus | PHOSPHORUS | - |
dc.subject.keywordAuthor | MWD, mean weight diameter | - |
dc.subject.keywordAuthor | POM, particulate organic matter | - |
dc.subject.keywordAuthor | SOC, soil organic Carbon | - |
dc.subject.keywordAuthor | SOM, soil organic matter | - |
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