2022
DOI: 10.5194/egusphere-2022-335
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Back to the future- Conservative grassland management for Anthropocene soils in the changed landscapes of Uruguay?

Abstract: Abstract. The ‘soils of the anthropocene’ are predominately agricultural. To understand them, we analysed agri- and silvicultural intensification of Uruguayan grasslands in a country wide survey on fertility proxies, pH and trace metals in topsoils originating from different land uses. We observed a loss of nutrients, trace metals and organic matter from grassland, crops and timber plantations, and its accumulation in the topsoils of riverine forests. The translocation of nutrients and organic matter across th… Show more

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(2 citation statements)
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“…In cropland, TOC and TN concentrations amounted to 32.7 ± 9.1 g kg -1 and 3.3 ± 0.8 g kg -1 . These results are consistent with those of Sämuel et al 47 who conducted similar measurements at 28 monitoring sites across Uruguay. They found that in grassland, TOC reached 29 ±19 g kg -1 (n = 115), while TN amounted to 2.2 ±1.3 g kg -1 (n = 115).…”
Section: Mixing Modelsupporting
confidence: 92%
See 1 more Smart Citation
“…In cropland, TOC and TN concentrations amounted to 32.7 ± 9.1 g kg -1 and 3.3 ± 0.8 g kg -1 . These results are consistent with those of Sämuel et al 47 who conducted similar measurements at 28 monitoring sites across Uruguay. They found that in grassland, TOC reached 29 ±19 g kg -1 (n = 115), while TN amounted to 2.2 ±1.3 g kg -1 (n = 115).…”
Section: Mixing Modelsupporting
confidence: 92%
“…These concentrations were slightly lower than those obtained by Ramon (2021) 46 , which is very likely explained by the fact that different soil depths were targeted by both studies (i.e. 0-10 cm layer for Sämuel et al 47 , vs. 0-2cm for Ramon (2021) 46 ) and the uppermost layer is known to be the most enriched in organic matter. Under native forest, TOC was 42 ±36 g kg -1 (n = 15), and TN amounted to 3.0 ±1.9 g kg -1 (n = 15).…”
Section: Mixing Modelmentioning
confidence: 61%