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- W2355382991 abstract "Locating in the centerofboth Xifeng and Luochuan districts on the Chinese Loess Plateau,a continuous loess-paleosolsequence since L2stage was collected by digging well,and stable carbon isotope com positions were m easured in detailincluding organic m atterand inorganic carbonate.The results show the change trend oforganic carbon isotope (δ13Corg)ofboth sections is consistentwith thatofthe previous results fornaturaloutcrop section.It is also noticed thatthe change trend oforganic carbon isotope (δ13Corg)is consistentwith thatofcarbonate carbon isotope (δ13Ccarb)in the loess-paleosolsequences,and δ13Corg is significantly positive correlation with δ13Ccarb,with the correlation coefficients of 0.62(α0.01)and 0.314(α0.01),respectively.This is contrary to the conclusion ofcarbon isotope com positionsfrom naturaloutcrop section.The reason ofthe difference isprobably that (1)late reform ation:because naturaloutcrop section m ostly occurred on both sides ofgully form ed from rainfall erosion on the Loess Plateau,the section is in an opening or sem i-opening environm ent which m ade outside hydrotherm alenvironm entand gas exchange influence soilinorganic carbonate from surface to som e depth;(2)at the sam e tim e,loess-paleosolphreatic section is likely influenced by both upperm oisture and fractionalpressure of CO2 of soil,and pedogenic carbonate form ed,resulting in the com plex change tendency of carbon isotope com position;(3)regionaldifference ofsam ple location.Ourstudy indicates thatfurtherresearch on carbon isotope com position ofphreatic section in loess-paleosolsequencesofotherdistrictsand com parison ofcorresponding natural outcrops are im portantto m ore accurately understand the history ofevolution of paleovegetation and paleoclim ate recorded in carbon isotope ofloess-paleosolsequences." @default.
- W2355382991 created "2016-06-24" @default.
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- W2355382991 date "2008-01-01" @default.
- W2355382991 modified "2023-09-25" @default.
- W2355382991 title "Carbon isotope characteristics of loess-paleosol sequences derived from phreatic section on Chinese Loess Plateau" @default.
- W2355382991 hasPublicationYear "2008" @default.
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