Downward Movement of Soil Organic Matter and Its Influence on Trace-Element Transport (210Pb, 137Cs) in the Soil
Issue Date
1989-01-01Keywords
leadPb 210
transport
cesium
alkali metals
Cs 137
metals
soils
dates
isotopes
radioactive isotopes
absolute age
Metadata
Show full item recordCitation
Dörr, H., & Münnich, K. O. (1989). Downward movement of soil organic matter and its influence on trace-element transport (210 Pb, 137 Cs) in the soil. Radiocarbon, 31(3), 655-663.Journal
RadiocarbonDescription
From the 13th International Radiocarbon Conference held in Dubrovnik, Yugoslavia, June 20-25, 1988.Additional Links
http://radiocarbon.webhost.uits.arizona.edu/Abstract
Data on depth distribution and 14C content of soil organic carbon, and on soil CO2 production in forest ecosystems are presented and discussed. Downward movement and turnover of soil organic matter is estimated from a box chain model. The downward transfer velocity of soil organic material depends on the litter material composition and on the annual rate of microbial decomposition. Depth distribution of 210Pb and 137Cs was measured. The identical transfer velocity of 210Pb and soil organic material suggests that lead transport is due to movement of the organic material itself. Lead in organic-rich soils obviously is bound rather tightly to the organic carrier by ion exchange or organic complexing. 137Cs migration depends on the turnover and downward movement of soil organic material. Results suggest that cesium is not transported only by the downward movement of solid organic matter, but, due to chemical exchange between the organic and hydrous phases, travels faster than organic matter.Type
Proceedingstext
Language
enISSN
0033-8222ae974a485f413a2113503eed53cd6c53
10.1017/S003382220001225X