摘要
激光雷达是近年来国际上发展十分迅速的主动遥感技术,在森林参数的定量测量和反演上取得了成功的应用。激光雷达具有与被动光学遥感不同的成像机理,对植被空间结构和地形的探测能力很强,特别是对森林高度的探测能力,具有其他遥感数据无法比拟的优势。介绍激光雷达遥感的基本原理、大光斑和小光斑激光雷达系统的特点,对它们在林业上的应用现状进行评述,重点分析激光雷达反演森林参数的方法,对激光雷达的林业应用前景进行分析和展望。
Lidar (light detection and ranging) remote sensing is a breakthrough of active remote sensing technology in recent years. It has shown enormous potential for forest parameters retrieval. Lidar remote sensing has the unique advantage of providing horizontal and vertical information at high accuracies. Especially it can be used to measure forest height directly with unprecedented accuracy. This article introduces the basic principle of lidar remote sensing and the lidar systems of large footprint and small footprint. The status of the technology, the retrieval methods of forest parameters such as tree height, biomass, canopy vertical structure and crown closure, and the prospect of the application of lidar technology in forestry have been reviewed in detail in this paper.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2005年第3期129-136,共8页
Scientia Silvae Sinicae
基金
国家 8 6 3计划"遥感数据森林资源定量应用"课题 ( 2 0 0 2AA1330 5 0 )
国家林业局 948课题"高精度激光雷达树高测量技术引进"( 2 0 0 4-4 -6 4)资助
关键词
激光雷达
树高
生物量
冠层垂直结构
遥感
lidar
forest height
biomass
canopy vertical structure
remote sensing
