Data for: Changes in vegetation type on the Chinese Loess Plateau since 75 ka related to East Asian Summer Monsoon variation
Description
The carbon isotope (δ13CSOM) and nitrogen isotope (δ15NSOM) compositions of the acidized aliquot were analyzed by elemental analyzer-isotope ratio monitoring mass spectrometry (EA-IRMS) using a MAT253 mass spectrometer interfaced with a Flash EA2000 elemental analyzer. The total organic carbon (TOC) and total nitrogen (TN) contents of the acidized aliquots were analyzed using a vario MACRO cube (Elementar Corporation). All samples were measured at the State Key Laboratory of Geological Processes and Mineral Resources (SKL-GPMR) in the China University of Geosciences (Wuhan). Carbon and nitrogen isotopic compositions are reported as per mille (‰) variation relative to the VPDB (Vienna Peedee Belemnite) and atmospheric N2 standards, respectively.