摘要
通过图像解析法对侧柏散生木冠形系数进行研究,应用平均冠形系数和树高建立起侧柏林分适宜密度的经验公式N=10 000/(0.377H),制定了基于弱竞争条件下的侧柏生态公益林密度控制表。结果表明:应用该方法预测的济南燕子山试验林场林木适宜营养面积和局部林分密度与最优的疏伐强度试验结果相吻合,与以往公表的侧柏生态公益林林分密度研究结果基本一致。维持适度的林地透光度,有利于促进林地自然更新、保持植物多样性以及防控水土流失。
The crown coefficient of Platycladus orientalis was studied by image analysis. The empirical formula N= 10 000/(0. 377H) was established by using average crown coefficient and tree height. Developing a density control table of P. orientalis based on weak competition conditions. Results indicated that the density model from the trees under weak competition was consistent with thinning test at Yanzishan forestry experimental station and existing density models. It also suggested that proper transmittance in non-commercial plantation of P. orientalis was benefit to promote the natural regeneration, maintain the plant diversity and prevent the soil and water loss.
出处
《西南林业大学学报(自然科学)》
CAS
北大核心
2017年第6期1-9,共9页
Journal of Southwest Forestry University:Natural Sciences
基金
山东省重点研发计划项目(2017GNC11109)资助
国家自然科学基金项目(31770770)资助
关键词
侧柏
生态公益林
营养面积
密度
冠形系数
散生木
数字图像
Platycladus orientalis, non-commercial plantation, nutrient area, density, crown coefficient, scattered tree, digital image