n-Fatty acids(n-FAs)are widely investigated in lake sediments,yet less attention has been given to soil sedimentary n-FAs primarily derived from terrestrial plants.In this study,we performed an analysis of n-FA distri...n-Fatty acids(n-FAs)are widely investigated in lake sediments,yet less attention has been given to soil sedimentary n-FAs primarily derived from terrestrial plants.In this study,we performed an analysis of n-FA distributions in modern plants on the Loess Plateau,China.It showed that n-FAs were generally dominated by n-C16,and that short-chain(C16-C20),medium-chain(C22-C26)and long-chain(C28-C32)n-FAs accounted for 49.7%,33.7%and 16.6%,respectively.The LTR(long-chain/total ratio),and medium-chain EOP(even/odd predominance)are likely to differentiate between dicots and monocots in modern plants.It is believed that this study will promote the paleo-application of soil sedimentary n-FAs on the Loess Plateau.展开更多
基金We would like to thank Dr.Z.Wang and Prof.W.G.Liu for assisting in field sampling.This work was supported by the NationalNatural Science Foundation of China(Grant No.41420104008)ChineseAcademy of Sciences(Nos.132B61KYSB20170005,QYZDY-SSw-DQC001 and ZDBS-LY-DQC033).
文摘n-Fatty acids(n-FAs)are widely investigated in lake sediments,yet less attention has been given to soil sedimentary n-FAs primarily derived from terrestrial plants.In this study,we performed an analysis of n-FA distributions in modern plants on the Loess Plateau,China.It showed that n-FAs were generally dominated by n-C16,and that short-chain(C16-C20),medium-chain(C22-C26)and long-chain(C28-C32)n-FAs accounted for 49.7%,33.7%and 16.6%,respectively.The LTR(long-chain/total ratio),and medium-chain EOP(even/odd predominance)are likely to differentiate between dicots and monocots in modern plants.It is believed that this study will promote the paleo-application of soil sedimentary n-FAs on the Loess Plateau.
