摘要
通过对相同立地条件下华山松Pinus armandiFranch、响叶杨Populus adenopodaM axim不同比例的混交林和华山松纯林的生长特性和生态效应的调查分析,结果表明,混交林的生长量优于纯林,其中混交林中华山松与响叶杨按6∶4混交效果最好。华山松—响叶杨(6∶4)混交林林分中华山松的平均树高、平均胸径、每公顷立木蓄积量分别比华山松纯林大10%、6.7%、53%;华山松—响叶杨(6∶4)混交林生物量比华山松纯林大17.9%;混交林能明显改善林分内的生态效应,充分利用营养空间;华山松—响叶杨(6∶4)混交林林地土壤有机质、速效磷、速效钾、pH值比华山松纯林林地分别大15.99%、10.84%、7.69%、12.5%,提高了土壤的肥力。
In this paper,we studied the growth and the eco-effect of the P. armandi-P, adenopoda Maxim mixed forest and the P. arrnandi pure forest in the same site condition. The results showed that the growth of the mixed forest was superior to pure forest and the mixed effect made by proportion of 6：4 was the best. The average height,average bosom diameter,volume and biomass per ha of P. arrnandi in mixed forest （6： 4）were 10% ,6.7% ,53% more than those of P. arrnandi pure forest respectively, the biomass of the mixed forest was 17.9% more than that of pure forest. The mixed forest can improve the ecooeffect of the forestry and make use of the nutritional space. The organic matter, the available P, the available K, pH of mixed forest （ 6： 4 ） were 15.99% , 10.84% ,7.69% , 12.5% more than those of P. armandi pure forest, and improved the soil fertility.
出处
《山地农业生物学报》
2005年第4期299-302,共4页
Journal of Mountain Agriculture and Biology
基金
贵州省林业厅"九五"重点科学技术资助项目
关键词
华山松
响叶杨
混交林
生长量
生物量
生态效应
P. armandi
P. adenopoda Maxim
mixed forest
growth
biomass
eco-effect
