作者: M.H.O.M. Wittmer , K. Auerswald , P. Schönbach , R. Schäufele , K. Müller
DOI: 10.1016/J.BAAE.2009.10.007
关键词:
摘要: … The carbon isotope composition (δ 13 C) of C3/C4 mixed … We investigated the relation between δ 13 C of C3/C4 grassland … At the same time, the C3/C4 ratio decreased due to the later …