Specifics of strontium accumulation in the floodplain soils of the Kuda River, Irkutsk Region

Influence Of The Large Flood On The Element Composition Of Fluvisols In The Amur River Valley

“…In such conditions trace elements are washed out of soils or displaced down the soil profile. The latter is supported by the data (Antić-Mladenović et al 2016;Kuznetsov et al 2017;Shaheen et al 2014) on high mobility of Sr, Cd and Pb at low pH as well as numerous studies of the influence of redox potential on accumulation of trace elements (Cao et al 2001;Frohne et al 2011;Schulz-Zunkel et al 2015). In organic horizon of P2 the content of the most trace elements did not change (Fig.…”

“…However, these results do not reflect in situ processes due to heterogeneity in time and area of content of major and trace elements in floodplains (Schulz-Zunkel et al 2013). The latter is attributed to strong variability of biochemical and soil-forming processes occurring in floodplains (Lair et al 2009;Tockner et al 2016). Furthermore, most scientific works dealing with the content and behavior of major and trace elements in fluvisols take into consideration narrow range of elements (Antić-Mladenović et al 2016; Martin 2015), whereas, analysis of wide range of elements would allow us to distinguish associations of elements prone to accumulation or losses and, as a result, to forecast the flood consequences in the future.…”

“…Most phosphorous in young fluvisols is concentrated in the form of primary minerals (Zehetner et al 2008), which are not subjected to substantial influence of changes of soil properties, and are only exposed to physical loss caused by washing out of soils. Floods may have negative influence on the content of non-mineral form of phosphorous due to reduction of sorption capacity of phosphorous under hydration conditions (Lair et al 2009). Manganese exists in the form of primary minerals as well, but Mn+2 is prone to leaching by river waters (Sharma et al 2016).…”

“…Part of the migrating matter is retained in different geochemical barriers within of fluvial soils in the floodplain area, which provides their high biological efficiency and fertility (Wei & Jin-liang 2002). However, fluvisols may be subjected to heavy contamination in presence of high element contents within catchment area, of geogenic or anthropogenic origin (Förstner et al 2004;Lair et al 2009). Subsequently, the soils might cause pollution of the downstream areas due to remobilization, transportation and redistribution of elements (Förstner et al 2004;Hilscherova et al 2007).…”