Research Interest

Research Interests

My research area is the C, H, O, N isotopic and organic biogeochemistry. I am particularly interested in problems in paleo and modern climatic and environmental change, e.g., determination and interpretation of isotopic compositions in suspended/sedimentary organic compounds, development of new isotopic and organic proxies for paleoenvironmental reconstructions, and exploration the interaction between climate, environment and ecosystem using biogeochemical tracers.

Research Highlights (For details please see Publications)

East Asian monsoon was initiated at the early Miocene as indicated by the occurrence of C4 plant signal in the South China Sea sediments. (Geology, 2003)

Sedimentary leaf wax record from the North Pacific suggested a Late Miocene decline of C4 plant in the arid Asian interior, which should have been associated with a significant global and regional cooling event. (EPSL, 2012)

SST record in the South China Sea revealed that since the Pliocene there has been a close evolutional relationship between the low-latitude Asian-Pacific air circulations of the meridional Hadley, the East Asian monsoon, and the zonal Walker. (GRL, 2008

In the low-latitude Western Pacific, we found a pattern of northward decrease in value and variability of sedimentary δ15N, suggesting a northward increase of local N2 fixation that dampened glacial-interglacial changes of source water δ15N in marginal seas. (GRL, 2011

East Asian summer monsoon in the subtropical China was modulated by the thermal state of the tropical Pacific during the Holocene. (QSR, 2015) 

Human activity is an increasing factor disturbing the natural biogeochemical balance and cycles of C and N in the continuum of the Pearl River-Estuary-North SCS over the past century. (MC, 2003, 2013; Biogeochem, 2009; RRA, 2009; ECSS, 2014; JGR, 2015)

Leaf wax carbon and hydrogen isotopic compositions can be potentially used as proxies for paleoaltimetry. (GCA, 2008; GRL, 2009; GPC, 2015

There are two modes of Thaumarchaeota growth in the deep and shallow SCS, respectively, leading to different meanings of the TEX86 temperature proxy, i.e. subsurface temperature in the open SCS and winter-biased temperature in coastal northern SCS. (OG, 2012, 2013