A survey on the distribution and population of Xanthocyparis vietnamensis Farjon & Hiep in Mulun Nature Reserve and Maolan Nature Reserve was conducted from January to October in 2014. The results indicated that there were 7 distributive sites and 33 Xanthocyparis vietnamensis Farjon & Hiep in the two nature reserve. The associated tree species of Xanthocyparis vietnamensis Farjon & Hiep can be divided into three levels: tree layer,shrub layer and herb layer. There were 31 species( etc Pistacia weinmannifol...