IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.5
Effects of Environmental Factors on Tree Seedling Regeneration in a Pine-oak Mixed Forest in the Qinling Mountains, China
YU Fei; WANG De-xiang; SHI Xiao-xiao; YI Xian-feng; HUANG Qing-ping; HU You-ning
Corresponding AuthorWANG De-xiang
2013-10
Source PublicationJournal of Mountain Science
Volume10Issue:5Pages:845-853
AbstractNatural seedling regeneration and tree establishment are affected by various environmental factors. In this study, we established eight, eight, six, and four independent forest stands (each stand was further divided into five subplots) respectively based on the altitudinal gradient, stand density, slope location, and slope aspect to investigate the effects of environmental factors on tree seedling regeneration in a pine-oak mixed forest. The results indicated that the seedling density was significantly higher at altitudes of 1,283 m to 1,665 m, whereas the sapling density did not differ with altitudes. The seedling and sapling density decreased significantly at 1,835 m. The seedling densities on the upper slopes were much higher than those on the middle and lower slopes, whereas the sapling density had no difference. The sapling density decreased gradually from the southwest (20°–75°) whereas it increased on the shady slopes to the northeast (40°). The seedling density increased from southwest (20°) to northeast (40°). The seedling and sapling densities increased with the stand density (850 trees ha-1 to 1,525 trees ha-1) whereas the sapling density was significantly lower in stands (1,900 trees ha-1). Principal components analysis showed that the slope aspect and stand density had more important roles in tree regeneration in this study region compared with the other two factors. Therefore, our findings suggest that it will be beneficial to keep stands at a moderate density on shady slopes. Appropriate thinning of higher density stands is also expected to promote the natural regeneration of pine-oak mixed forest.
KeywordEnvironmental Factors Pine-oak Mixed Forest Qinling Mountains Regeneration
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6342
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.5
Corresponding AuthorWANG De-xiang
Recommended Citation
GB/T 7714
YU Fei,WANG De-xiang,SHI Xiao-xiao,et al. Effects of Environmental Factors on Tree Seedling Regeneration in a Pine-oak Mixed Forest in the Qinling Mountains, China[J]. Journal of Mountain Science,2013,10(5):845-853.
APA YU Fei,WANG De-xiang,SHI Xiao-xiao,YI Xian-feng,HUANG Qing-ping,&HU You-ning.(2013).Effects of Environmental Factors on Tree Seedling Regeneration in a Pine-oak Mixed Forest in the Qinling Mountains, China.Journal of Mountain Science,10(5),845-853.
MLA YU Fei,et al."Effects of Environmental Factors on Tree Seedling Regeneration in a Pine-oak Mixed Forest in the Qinling Mountains, China".Journal of Mountain Science 10.5(2013):845-853.
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