Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), a fast-growing, evergreen coniferous tree with high yield and excellent wood quality, is one of the most important tree species for timber production in south China. Because of its high commercial value, native broad-leaved and coniferous forests are often transformed into plantations of pure Chinese fir. The total plantation area of Chinese fir in China is around 9.11 million hectares. Because the area of Chinese fir plantations has expanded rapidly, suc...