期刊论文

Effect of Canopy Gap on Subtropical Secondary Forest Sapling Regeneration Based on LiDAR

中文

农业机械学报

1000-1298

2017

48

3

198-204

10.6041/j.issn.1000-1298.2017.03.025

湖南省自然科学基金面上项目（2015JJ2201）； 湖南省教育厅科学研究项目（13B153、14C1182）； 中南林业科技大学***科研启动基金项目；

本校为第一机构

以湖南亚热带次生林为研究对象,利用多时相机载激光雷达(Light detection and ranging,LiDAR)和野外调查数据对林窗及幼树进行监测,分析比较林窗对幼树密度分布和树高生长变化的影响。结果表明,林窗大小和位置对幼树密度分布都有显著影响,喜光树种幼树主要集中在小林窗的中心区或大林窗的过渡区,在大林窗中密度最大(647株/hm~2),耐荫树种幼树主要集中在林窗的边缘区,在中等林窗中密度最大(941株/hm~2)。林窗大小对幼树树高生长有显著影响,喜光树种和耐荫树种幼树分别在大林窗和中等林窗中树高生长量最大(69.3 cm/a、57.7 cm/a),喜光树种幼树在中心区的树高生长量明显大于其他位置,耐荫树种幼树的...

Canopy gaps are small-scale openings in forest canopies which offer suitable micro-climatic conditions for tree regeneration. The subtropical secondary forest in Hunan Province was focused, and multi-temporal light detection and ranging (LiDAR) and survey data were adopted to analyze effects of different canopy gaps on sapling density and height growth. The results showed that both size of gap and position within gap significantly affected sapling density distribution. Shade intolerant sapling was mainly distributed in central zones of small-si...