摘要
为提高木荷造林成效,探索影响木荷生长的地形因子,在福建省华安西陂国有林场对不同地形条件下木荷的生长情况进行系统调查和研究。结果表明,造林3 a后,不同坡位标准地中木荷的胸径、树高和冠幅生长均表现为下坡位>中坡位>上坡位,其中下坡位标准地的木荷平均胸径、树高和冠幅分别为3.11 cm、4.44 m和2.50 m。同处山脊的标准地,造林4 a后,东北坡的木荷在胸径生长方面表现最佳,平均胸径为5.29 cm;东南坡的木荷在树高和冠幅生长方面表现最佳,平均树高可达6.75 m、平均冠幅可达4.54 m;西北坡的木荷生长情况相对较差。在坡向和造林苗木规格相同的情况下,造林2 a后,位于山谷标准地的木荷长势明显好于山脊标准地上的木荷,但两者在胸径、树高和冠幅生长方面的差异并不显著。此外,在山谷地带,南坡标准地上营造木荷较西南坡向标准地上的木荷长势更好,造林2 a后,平均胸径、树高和冠幅分别可达2.96 cm、3.14 m和2.14 m;在山脊地带,南坡较北坡更有利于木荷胸径和冠幅生长,但在树高生长方面影响不大。
In order to improve the effect of afforestation effect of Schima superba, topographic factors of Schima superba growth, the growth of Schima superba under different terrain conditions was investigated and studied. The results show that in the Schima superba experimental forest building on downslope position 3 years, the average DBH, average tree height, average crown of Schima superba all showed as downhill slope 〉 middle slope 〉 uphill slope. And the average DBH, average tree height, average crown of Schima superba in downhill standard site is 3.11 cm,4.44 m,2. 50 m. When the standard plot in ridge terrain,afforestation after 4 a,the northeast slope of Schima superba DBH growth showed the best, which average DBH is 5.29 cm;the best performance in the southeast slope of Schima superba tree height and crown growth, the average tree height up to 6.75 m, the average crown width up to 4. 54 m; the growth of the northwest slope of Schima superba relative poor. To the same specifications and planting seedlings under conditions of slope af- forestation,2 a, growth in the valley to the standard of Schima superba was significantly better than the standard on the ridge of Schima superba, but both in DBH, tree height and crown growth differences is not significant. In addition, in the valley, creating a standard to the southwest slope of Schima superba on Schima superba grew better in the southern slope of the standard,2 years after afforestation,the average DBH,tree height and crown width were respectively 2. 96 cm,3. 14 m and 2. 14 m;in the south slope of the mountain ridge region,is more conducive to the growth of DBH and crown width, but it has little effect on tree height growth.
作者
蔡泉星
CAI Quanxing(Xipi National Forest Farm of Hua＇an,Hua＇an 363807, Fujian, Chin)
出处
《福建林业科技》
2017年第4期52-55,共4页
Journal of Fujian Forestry Science and Technology
基金
福建省林木种苗科技攻关第四期项目(木荷育种体系营建与应用技术研究
闽林科[2013]1号)
福建省林木种苗第五期项目(木荷核心育种群体构建与种子园高产技术研究
闽林计财[2016]30号)
关键词
木荷
坡位
坡向
地形
生长状况
Schima superba
slope position
slope aspect
terrain
growth status
