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比较了国内外已有的乔木郁闭度测量方法的优缺点,在样点法特别是观测管法的基础上,以北京延庆地区乔木林为对象,对郁闭度的激光测量进行了研究。实验改进了观察管法,对在野外测量乔木林郁闭度时精确测量所需样点数进行了研究,可以为野外快速、简洁、精确地测量乔木林郁闭度提供新的方法与参考。
The advantages and disadvantages of existing canopy density measurement methods at home and abroad are compared. Based on the sampling method, especially the observation tube method, the laser measurement of canopy density is studied in the arbor forest in Yanqing area, Beijing. The experiment improved the observational tube method and studied the exact number of sampling points when measuring the canopy density in the field, which can provide a new method and reference for the rapid, concise and accurate measurement of canopy density in the field.