Regional Calibration of Erosion Radiotracers (210Pb and 137Cs): Atmospheric Fluxes to Soils (Northern Spain)

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• 作者：Joan-Albert Sanchez-Cabeza ; Marta Garcia-Talavera ; Eduard Costa ; Victor Peñ ; a ; Jordi Garcia-Orellana ; Pere Masqué ; Constantino Nalda
• 刊名：Environmental Science & Technology
• 出版年：2007
• 出版时间：February 15, 2007
• 年：2007
• 卷：41
• 期：4
• 页码：1324 - 1330
• 全文大小：211K
• 年卷期：v.41,no.4(February 15, 2007)
• ISSN：1520-5851

文摘

Inventories of radionuclides commonly used to studyenvironmental processes, especially in erosion research,were determined in soil cores from two distant river basinsin northern Spain. Results showed that ²¹⁰Pb atmosphericfluxes correlate very well with mean annual rainfallacross the region, and this is also the case for ¹³⁷Csinventories but only on the basin scale. Therefore wesuggest that ²¹⁰Pb is a better candidate as a radiotracerfor soil erosion studies. In this region, the equation ²¹⁰Pb flux(Bq m^-2 yr^-1) = (0.19 ± 0.02) × rainfall (mm yr^-1) - (24± 17) can be used as a calibration to estimate input ²¹⁰Pbfluxes, a key parameter in soil erosion studies andmodels, when mean annual rainfall is known.