不同立地条件对黎蒴生长的影响研究
Growth Difference of Castanopsis fissa under Different Site Conditions
王俊林 1陈应彪 1张坤煜 1陈炽 2林文欢3
作者信息
- 1. 饶平县林业技术推广站,广东 潮州 515745
- 2. 饶平县浮滨镇农业农村服务中心,广东 潮州 515742
- 3. 汕头市林业科学研究所,广东 汕头 515041
- 折叠
摘要
在不同海拔、不同坡位、不同坡向、不同坡形以及不同坡度等立地条件下进行了黎蒴造林试验,通过分析4 年生黎蒴林分生长情况,对粤东地区黎蒴适宜生长的立地条件进行了研究.结果表明,不同海拔梯度对黎蒴林分生长影响显著,海拔<100 m时,黎蒴生长最好;随着坡位的上升,黎蒴平均树高、平均胸径和平均冠幅逐渐减小,下坡黎蒴生长最好;东北坡、北坡黎蒴生长情况明显优于南坡;生长于沟谷的黎蒴平均树高、平均胸径和平均冠幅显著高于山脊;当坡度<40°时,黎蒴的生长情况较好,当坡度>40°时,黎蒴生长情况较差.在粤东地区黎蒴造林中,立地条件宜选择海拔小于100 m、下坡、阴坡、沟谷及坡度小于40°.
Abstract
The afforestation experiment of Castanopsis fissa was carried out under the site conditions of dif-ferent altitude,different slope position,different slope aspect,different slope shape and different slope.By analyzing the growth of 4-year-old Castanopsis fissa stand,the site conditions suitable for the growth of Castanopsis fissa were studied in eastern Guangdong.The results showed that different altitude gradients had significant effects on the growth of Castanopsis fissa,which was the best when the altitude was less than 100 m;with the elevation of slope,the height,DBH and crown width of Castanopsis fissa decreased gradu-ally,and the best growth was in the downhill;the growth of Castanopsis fissa on the northeast slope and the north slope was obviously better than that on the south slope;the height,DBH and crown width of Castan-opsis fissa in valley were significantly higher than those in ridge;when the slope gradient was less than 40°,the growth of Castanopsis fissa was better,and when the slope gradient was greater than 40°,the growth was worse.To sum up,site conditions with altitude less than 100 m,downhill,shady slope,valley and slope gradient less than 40° should be selected for afforestation of Castanopsis fissa in eastern Guangdong.
关键词
黎蒴/立地条件/海拔/坡位/坡向/坡形/坡度Key words
Castanopsis fissa/site condition/altitude/slope position/slope aspect/slope shape/slope gradient引用本文复制引用
基金项目
中央财政林业科技推广示范项目([2018]GDTK-18)
出版年
2024
NETL
NSTL
万方数据