坡位、坡向对2年生山苍子生长的影响

Influence of Slope Position and Orientation on the Growth of Two-year-old Litsea cubeba

为了解坡位和坡向对山苍子生长的影响,以营建于2023年的山苍子区域试验林为研究对象,分析2年生山苍子地径、树高、冠幅、全株干质量、叶干质量等性状在坡位、坡向间的差异。结果表明:2年生山苍子地径、树高、冠幅、全株干质量、叶干质量在坡位、坡向间差异显著;下坡位阳坡与下坡位半阳坡间差异不显著,显著优于中坡位阳坡与中坡位半阳坡;上坡位阳坡、上坡位半阳坡、中坡位阴坡和下坡位阴坡间差异不显著,显著劣于中坡位阳坡与中坡位半阳坡;上坡位阴坡显著劣于其他坡位坡向。同时也发现了极端天气对山苍子的生长有较大的影响。

In order to understand the effects of slope position and orientation on the growth of Litsea cubeba,the regional test forest of Litsea cubeba established in 2023 was taken as the research object,and the differences in characteristics,such as ground diameter,tree height,crown width,whole plant dry weight and leaf dry weight of two-year-old Litsea cubeba in slope position and slope orientation were analyzed.The results showed as follows:there were significant differences in ground diameter,tree height,crown width,whole plant dry weight and leaf dry weight of two-year-old Litsea cubeba in slope position and slope orientation;there was no significant difference between the downhill sunny slope and the downhill semi sunny slope,but it was significantly better than the midslope sunny slope and the midslope semi sunny slope;there was no significant difference among the uphill sunny slope,the uphill semi sunny slope,the midslope shady slope,and the downhill shady slope,which was significantly worse than the midslope sunny slope and the midslope semi sunny slope;the uphill shady slope was significantly worse than the other slopes in terms of slope orientation.It was also found that extreme weather had a significant impact on the growth of Litsea cubeba.