期刊论文

Canopy Gap Characteristics and Spatial Patterns in Subtropical Broad-leaved Forest

Yang, Z.

中文

农业机械学报

1000-1298

2020

51

1

230-236

10.6041/j.issn.1000-1298.2020.01.025

31570627:国家自然科学基金 2017NK2132:湖南省科技计划重点项目 2019JGZD047:湖南省学位与研究生教育改革研究重点项目

本校为第一且通讯机构

为了解林窗特征及其空间分布对森林结构优化和功能恢复的重要驱动作用,以湖南省亚热带阔叶林为研究对象,根据长期监测数据,综合利用描述性统计方法、Ripley’s K函数和空间点模式分析方法,量化分析自然干扰林窗和人为干扰林窗的结构特征、空间分布模式以及影响林窗分布的空间变量。结果表明,林窗平均面积为78. 9 m2,林窗平均密度为12. 8个/hm2,与人工林相比,次生林呈现出林窗面积较小、密度较大、形状较复杂等特点;不同干扰类型的林窗在面积、形状和林下植被高度等特征上存在较大差异;林窗在空间分布模式上也有差异,但在大尺度上都呈现出聚集分布模式;次生林林窗分布的主要影响因素是坡度和坡位...

Canopy gap characteristics and spatial distribution play an important role in forest structure optimization and function restoration. Based on airborne laser scanning data and field evidence across sites, descriptive statistics were used to identify and examine gap characteristics. Ripley's K-function analysis was applied to test gap spatial patterns at a range of scales, and spatial point pattern analysis was used to quantify the relative importance of specific influences on patterns of gap occurrence. The results revealed that the average gap...