杉木黑木相思混交造林生长效果分析

Analysis on Growth Effect of Mixed Afforestation of Chinese Fir and Acacia Black Wood

在荒山荒地进行了营造杉木黑木相思混交林、纯林试验,经过12a的经营管理,杉木黑木相思混交林林木生长效果良好。结果显示:12a生的杉木黑木相思混交林平均林分生长量,分别比杉木、黑木相思纯林平均林分树高大8.89%、11.99%,每公顷平均树高分别大8.89%、11.99%,胸径分别粗16.65%和18.20%,郁闭度大0.33%、0.30%,单株材积大44.44%、56.00%,蓄积量多14.04%、31.19%。

The mixed forest and pure forest of Chinese fir black wood acacia were built in barren mountains and wasteland. After 12 a management, the growth effect of Chinese fir black wood acacia mixed forest was good. The results showed that the average stand growth of 12 a Chinese fir black acacia mixed forest was 8.89% and 11.99% higher than that of Chinese fir and blackwood Acacia, respectively. The diameter of the breast was 16.65% and 18.20%;the canopy was 0.33% and 0.30%;the volume per plant was 44.44% and 56.00% and the accumulation was 14.04% and 31.19%.