Prospects and Limitations of an Isotope Tracer Technique for Understanding Sulfur Cycling in Forested and Agro-Ecosystems
作者:
B. Mayer,
H.R. Krouse,
期刊:
Isotopes in Environmental and Health Studies
(Taylor Available online 1996)
卷期:
Volume 32,
issue 2-3
页码: 191-201
ISSN:1025-6016
年代: 1996
DOI:10.1080/10256019608036311
出版商: Taylor & Francis Group
关键词: Agro-ecosystem;catchment;forest ecosystem;lysimeter;stable isotopes;sulfur 34;sulfur cycling;tracer
数据来源: Taylor
摘要:
Applications of isotopically distinct sulfur compounds have recently been used for tracing the fate of added sulfur in whole catchments or sub-compartments therein. Basic principles, the analytical methodology, and data evaluation for this isotope tracer technique are briefly described. We recommend that δ34S-values of applied and natural sulfur compounds in the investigated ecosystem should differ by more than 20‰ in order to successfully ascertain sulfur fluxes. Where possible, a high ratio of applied sulfur loads versus sulfur pool sizes in the ecosystem should also be realized in order to allow the assessment of sulfur transformations in the study area. Prospects and limitations of this isotope tracer technique are critically discussed by reviewing results from recently or currently conducted lysimeter and field experiments.
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