Erosion rates evaluated by the 137Cs technique and direct measurements on long-term runoff plots under tropical conditions

Autor:	I. C. De Maria, Sonia Carmela Falci Dechen, Vladia Correchel, Klaus Reichardt, Osny Oliveira Santos Bacchi
Rok vydání:	2006
Předmět:	Tillage Hydrology Radionuclide Erosion Soil Science Tropics Environmental science Sediment Surface runoff Agronomy and Crop Science Earth-Surface Processes
Zdroj:	Soil and Tillage Research. 86:199-208
ISSN:	0167-1987
Popis:	Measured 137 Cs losses (Bq m −2 ) from long-term runoff plots under tropical conditions and correspondent estimated soil erosion rates (Mg ha −1 year −1 ) were significantly correlated to directly measured soil losses of the same plots, during the same period (1963–2002). A tendency of higher 137 Cs activities was observed in soil profiles of the bottom third part of runoff slopes that could be explained by the restricting effect of the collector system on the runoff flow or by tillage translocation. Despite of the very low 137 Cs activity found in the soil of the plots, the isotopic technique yielded confident results, comparable to those obtained by the traditional direct measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::afc9fb28dfde7d5999ab71017c72ccea https://doi.org/10.1016/j.still.2005.02.021 Zobrazit plný text záznamu Full Text from ScienceDirect