Skip to main content Accessibility help
×
Home
Hostname: page-component-66d7dfc8f5-czmr8 Total loading time: 0.288 Render date: 2023-02-09T10:55:43.075Z Has data issue: true Feature Flags: { "useRatesEcommerce": false } hasContentIssue true

Article contents

The Use of Natural and Anthropogenic 14C to Investigate the Dynamics of Soil Organic Carbon

Published online by Cambridge University Press:  18 July 2016

Bernard John O'Brien*
Affiliation:
Institute of Nuclear Sciences, Private Bag, Lower Hutt, New Zealand
Rights & Permissions[Opens in a new window]

Abstract

HTML view is not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Radiocarbon has been measured in two soil profiles, one of which has been covered by a building since 1956. A comparison of the Δ14C values in horizons of each profile gives an estimate of the total input of atom bomb 14C into the soil profile. From the Δ14C and carbon density profile data, the carbon input rates, respiration rates, and diffusivity are calculated. The lack of vegetation on one soil affects the mobility and the respiration rate of the soil carbon in that soil. The data from this soil profile are also used to check the assumption, used in previous analyses, that there is a uniform distribution of ‘old’ carbon down the soil profile. The input rate, turnover time, and diffusivity parameters determined from the Δ14C profiles in these soils are compared with other published data on pasture and forest soils.

Type
III. The Carbon Cycle
Copyright
Copyright © The American Journal of Science 

References

O'Brien, B J, 1984, Soil organic carbon fluxes and turnover rates estimated from radiocarbon enrichments: Soil Biol & Biochem, v 16, p 115120.CrossRefGoogle Scholar
O'Brien, B J and Stout, J D, 1978, Movement and turnover of soil organic matter as indicated by carbon isotopic measurements: Soil Biol & Biochem, v 10, p 309317.CrossRefGoogle Scholar
Rafter, T A, 1965, Carbon-14 variations in nature, Part 2, Increase in 14C activity in the atmosphere of the southern hemisphere from the testing of nuclear weapons: New Zealand Jour Sci, v 8, p 472493.Google Scholar
Rafter, T A and Stout, J D, 1970, Radiocarbon measurements as an index of the rate of turnover of organic matter in forest and grassland ecosystems in New Zealand, in Olsson, I U, ed, Radiocarbon variations and absolute chronology, Nobel symposium, 7th, Proc: Stockholm, Almqvist, p 401418.Google Scholar
Scharpenseel, H W, 1973, Natural radiocarbon measurements on soil organic matter fractions and on soil profiles of different pedogenesis, in Rafter, T A and Grant-Taylor, T, eds, Internatl radiocarbon dating conf, 8th, Proc: Wellington, Royal Soc New Zealand, v 2, p E1E12.Google Scholar
You have Access
18
Cited by

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

The Use of Natural and Anthropogenic 14C to Investigate the Dynamics of Soil Organic Carbon
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

The Use of Natural and Anthropogenic 14C to Investigate the Dynamics of Soil Organic Carbon
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

The Use of Natural and Anthropogenic 14C to Investigate the Dynamics of Soil Organic Carbon
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *