不同整地方式对火炬松幼林生长及林下植物多样性的影响

The Effect of Different Site Preparing Modes on Growth of Pinus taeda L. Juvenile Stand and Diversity of Undergrowth

不同整地方式对火炬松幼林生长及林下植被生物多样性影响的研究表明：６年生火炬松生长量、生物量均呈全垦＞带垦＞对照。林下植被的物种多样性及其生物量均呈对照＞带垦＞全垦。在确定火炬松丰产林整地措施时应综合考虑整地的生长效应与保护林下植被物种多样性的统一、建议在类似该试验地的立地条件下采用带垦整地方式可取得良好的经济效益和生态效益。

The effect of site preparing mode on the growth of Pinus taeda L. juvenile stand and diversity of undergrowth was studied. The results indicated that the increment and biomass were both in the order of complete site preparation>strip site preparation>control. and the diversity and biomass of undergrowth were both in the sequence of complete site preparation<strip site preparation<control. It deduced that the growth effect and reserving of undergrowth diversity should be taken into account when site preparing of high-yield forest of P. paeda L. were adopted. and strip site preparation was the preferrence at the same site for a better economic and ecological profit.