基于无人机激光雷达的刺槐人工林森林健康指标的构建

doi:10.14088/j.cnki.issn0439-8114.2022.03.032

湖北农业科学 ›› 2022, Vol. 61 ›› Issue (3): 156-160.doi: 10.14088/j.cnki.issn0439-8114.2022.03.032

基于无人机激光雷达的刺槐人工林森林健康指标的构建

蒙鹏宇

河海大学水文与水资源学院,南京 210098

收稿日期:2021-08-13 出版日期:2022-02-10 发布日期:2022-03-11
作者简介:蒙鹏宇（1996-）,女,山西大同人,在读硕士研究生,研究方向为林业遥感,（电话）15850683523（电子信箱）mengpysnow@163.com
基金资助:
国家自然科学基金项目（41471419）

Establishment of forest health indicators of Robinia pseudoacacia plantation based on UAV LiDAR

MENG Peng-yu

College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China

Received:2021-08-13 Online:2022-02-10 Published:2022-03-11

摘要/Abstract

摘要： 利用无人机激光雷达LiDAR （Light detecting and ranging）数据,提取能反映植被垂直和水平结构变化的LiDAR特征变量,通过相关性分析和层次聚类方法构建森林健康指标来识别黄河三角洲刺槐人工林的健康状况。结果表明,森林健康指标由LAD_cv（叶面积密度的变异系数）、weibull_α（Weibull密度函数的尺度变量）、H₉₉（高度百分位数）和VCI（垂直复杂度）构成;利用森林健康指标进行刺槐林的健康等级判断可以得到较理想的结果（总精度为86.7%,Kappa系数为0.79）,证实了激光雷达技术在判断森林健康状况方面的潜能。

关键词: 森林健康指标, 无人机激光雷达, 刺槐, 黄河三角洲

Abstract: LiDAR（Light detection and ranging） data of UAV was used to extract LiDAR characteristic variables that can reflect the changes of vegetation vertical and horizontal structure. Forest health indicators were constructed by correlation analysis and hierarchical clustering method to identify the health status of robinia pseudoacacia plantation in the Yellow river delta. The results showed that,the forest health indicators were composed of LAD_cv （the coefficient of variation of leaf area density）, weibull_α （the scale parameter of the Weibull density function）, H₉₉ （the percentile height of 99th） and VCI （Vertical complexity index）;Using forest health indicators to judge the health status of Robinia pseudoacacia forest could get an ideal result （total accuracy of 86.7%, Kappa coefficient of 0.79）, which confirmed the potential of LiDAR technology in forest health assessment.

Key words: forest health indicators, UAV LiDAR, Robinia pseudoacacia, the Yellow river delta

中图分类号:

蒙鹏宇. 基于无人机激光雷达的刺槐人工林森林健康指标的构建[J]. 湖北农业科学, 2022, 61(3): 156-160.

MENG Peng-yu. Establishment of forest health indicators of Robinia pseudoacacia plantation based on UAV LiDAR[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(3): 156-160.

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基于无人机激光雷达的刺槐人工林森林健康指标的构建

Establishment of forest health indicators of Robinia pseudoacacia plantation based on UAV LiDAR

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