闽南山地降香黄檀与大果紫檀混交效果分析

Effect of Dallergia odorifera Mixed with Pterocarpus edulis in Mountainous Areas of Southern Fujian Province

通过对降香黄檀与大果紫檀混交林和纯林的林分生长量及土壤理化性状的分析,研究了闽南山地降香黄檀与大果紫檀混交效果。结果表明:12年生混交林中的降香黄檀平均树高、胸径、冠幅和单株材积明显高于降香黄檀纯林,分别提高了21.77%、19.12%、19.38%和85.90%。混交林土壤有机质、水解氮、有效磷P 2 O 5、速效钾K 2 O含量分别比纯林高17.58%、8.81%、27.64%和3.95%,混交林在一定程度上有改良土壤性状的趋势。

Through the analysis of the stand growth and soil physical and chemical properties of the mixed afforestation and pure forest of Dallergia odorifera and Pterocarpus edulis,the effect of the mixed plantation of Dallergia odorifera and Pterocarpus edulis was studied.Result shows that the average tree height,average diameter at breast height,average crown&volume per plant of Dallergia odorifera in the 12-year-old mixed forest are significantly higher than those of Dallergia odorifera pure forest,increasing by 21.77%,19.12%,19.38%&85.90%,respectively.The contents of soil organic matter,hydrolyzed nitrogen,available phosphorus P 2 O 5,and available potassium K 2 O in mixed forests is 17.58%,8.81%,27.64%and 3.95%higher than those of pure forests,respectively.Mixed forests have a tendency to improve soil properties to a certain extent.