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Carbon and Nitrogen in the Enriched Labile Fraction along a Climosequence of Zonal Steppe Soils in Russia

A. Rodionova, W. Amelunga, I. Urusevskajab and W. Zecha

a Inst. of Soil Science and Soil Geography, Univ. of Bayreuth, D-95440 Bayreuth, Germany
b Inst. of Soil Science, Moscow State Univ., 119899 Moscow, Russia



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Fig. 1 Average C/N ratio in density fractions of fine silt–sized particles obtained from small macro- and microaggregates of native Russian steppe soils

 


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Fig. 2 Cultivation effect on the C proportion (in % of respective fine silt–aggregate C) in the <1.85 and 1.85 to 2.07 g cm-3 density fractions obtained from fine silt–sized particles of small macroaggregates as related to the precipitation/evaporation ratio P/E

 


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Fig. 3 Cultivation effect on the N proportion (in % of respective fine silt–aggregate N) in the <1.85 g cm-3 density fraction obtained from fine silt–sized particles of small macroaggregates as related to the precipitation/evaporation ratio P/E

 





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