Analysis on Growth Effect and Heritability of Liquidambar Formosana Hance Interplanted in Sparse Stands of Pinus Massoniana

In order to study the growth effect and heritability of main traits of Liquidambar formosana Hance interplanted in the sparse stands of Pinus massoniana, the comparative experiment was conducted by selecting the sparse stands of Pinus massoniana with three kinds of site qualities, namely fertile (LD1), relatively fertile (LD2) and moderately fertile (LD3). The results showed that Liquidambar formosana Hance interplanted in the sparse stands of Pinus massoniana with the canopy density of 0.3-0.4 had relatively high survival rate of afforestation and the growth conditions were good. The growths of Liquidambar formosana Hance interplanted in the sparse stands of Pinus massoniana with fertile (LD1) and relatively fertile (LD2) site qualities were significantly higher than that with moderately fertile (LD3) site quality. The crown traits of Liquidambar formosana Hance interplanted in the sparse stands of Pinus massoniana under three site quality conditions, namely fertile, relatively fertile and moderately fertile, had good growth and development, whose heritabilities of tree height, DBH, timber volume, taperingness, crown length rate, crown width and crown type index were all above 0.7, with good genetic stability. Above all, it was shown that Liquidambar formosana Hance was one of the better tree species in the reconstruction of low-function forest of Pinus massoniana and landscape improvement.