Composition and floristic elements of vegetation in the Dongting Lake were investigated on the basis of the field investigation in 2007-2009.

The origin of the wild fruit forest was various, including the floristic elements from Angara, Old Arctic, Old Mediterranean, Cathaysian and Xinjiang.

The floristic component of Yuanmou vegetation distinctly consists of the large part of tropical elements, in which some genera connect to the current typical savannas.