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Author Bringmark, Ewa ♦ Bringmark, Lage ♦ Sonesten, Lars ♦ Mjöfors, Kristina ♦ Johansson, Maj Britt
Source SpringerLink
Content type Text
Publisher Springer Netherlands
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Social sciences ♦ Public administration & military science ♦ Administration of economy & environment
Subject Keyword Integrated monitoring ♦ Scots pine litter ♦ Annual decomposition rates ♦ Standard respiration ♦ Recalcitrant ♦ Humus quality ♦ Soil nitrogen ♦ Partial Least Squares (PLS) regression ♦ Environmental Engineering/Biotechnology ♦ Meteorology/Climatology ♦ Ecology ♦ Environment ♦ Environmental Management ♦ Physical Geography
Abstract Decomposition studies were carried out at sites throughout Sweden, including the four Integrated Monitoring sites. Scots pine needle litterbag weight loss measurements over 3 or 5 years were determined at 26 sites and repeated up to 27 times, depending on the site. Humus layer respiration rates were determined for 20 sites in 1987–1989 and repeated in 2007–2008. Partial Least Squares (PLS) regression was used to elucidate the relative importance of climatic and soil factors. Annual needle weight losses decreased only slowly (20–10%) over 3–5 years for all northern (>60°N) sites but decreased sharply from 30 to 10% in the third year in southern (<60°N) sites. Respiration rates of southern sites were less (40% on average) than those of northern sites. Humus layer N was positively correlated to needle weight loss during the first and the second years, but negatively correlated in the third year and to respiration rates. The results indicated that litter formed in southern Sweden became more recalcitrant in later stages of decomposition compared to litter produced in northern Sweden.
ISSN 00447447
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-12-27
Publisher Place Dordrecht
e-ISSN 16547209
Journal AMBIO
Volume Number 40
Issue Number 8
Page Count 13
Starting Page 878
Ending Page 890

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Source: SpringerLink