秃杉木荷混交造林林木生长效果探究

在杉木采伐迹地分别营造秃杉、木荷两树种的混交林和纯林,对12年生林木的生长量进行了比较,经调查效果探究,混交林、纯林不同林分的林木生长状况及林分土壤的理化性质有所不同,结果显示:混交林两树种混交与单树种纯林相比,混交林两树种林分生长量,均比纯林两树种林分生长量,平均树高大7.5%、8.5%,胸径粗11.60%、9.70,树冠大4.8%、11.7%,枝下高大7.14%、25.00%,单株材积大31.3%、33.3%,蓄积量多27.5%、29.6%。混交林的土壤理化性质比纯林明显改善。

A Study on the Growth Effect of Mixed Forest of Taiwania Flousiana and Schima superba

The mixed forest and pure forest of Taiwania Flousiana and Schima superba were built in the cutting area of Cunninghamia Lanceolata.The results showed that the growth of two tree species of mixed forest was higher than that of single tree species pure forest, and the growth of two tree species of mixed forest was higher than that of single tree species pure forest. The average tree height was 7.5% and 8.5%;diameter at breast height was 11.60% and 9.70%;crown was 4.8% and 11.7%;height under branch was 7.14% and 25.00%;volume per tree was 31.3% and 33.3% larger;volume was 27.5% and 29.6% more. The soil physical and chemical properties of mixed forest were obviously improved than that of pure forest.