Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner

doi:10.1111/gcb.13467

	Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner
	Li, Yumei 1; Guo, Qinghua2 ; Su, Yanjun 2; Tao, Shengli 3,4; Zhao, Kaiguang 5; Xu, Guangcai
	2017
发表期刊	ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
ISSN	0924-2716
卷号	130 页码:308-316
摘要	Terrestrial laser scanning (TLS) is a promising tool for estimating leaf area index (LAI). However, very few studies have considered the effect of clumping index Omega in the calculation of true LAI. In this study, we developed a new point cloud slicing method based on different incident zenith angles 0 and retrieved the gap fraction using multiple-return information to obtain more accurate true LAI estimations. In addition, we described a new Omega retrieval method based on the gap size analysis theory to correct the effect of foliage occlusion. Ground validation data were collected by destructively sampling 35 trees and measuring all their leaves. Results show that the TLS-based true LAI estimations based on a single TLS scan are strongly correlated with the destructively sampled LAI measurements (R-2 = 0.76, RMSE = 0.47). Moreover, our Omega retrieval method can effectively correct the effect of foliage occlusion. Other factors, such as the slicing resolution, percentage of laser beams with multiple returns, and scanning distance, have little effect on the final LAI estimation. (C) 2017 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V. All rights reserved.
关键词	Destructive sample Extinction coefficient Single scanning Terrestrial laser scanning Riegl VZ-400
学科领域	Biodiversity & Conservation ; Environmental Sciences & Ecology
DOI	10.1111/gcb.13467
收录类别	SCI
语种	英语
WOS关键词	GROUND-BASED LIDAR ; FOREST STRUCTURE ; PLANT CANOPIES ; DERIVATION ; DENSITY ; SIZE ; LAI ; ARCHITECTURE ; RADIATION ; PROFILE
WOS记录号	WOS:000394343300031
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-8235
资助机构	National Key Basic Research Program of ChinaNational Basic Research Program of China [2013CB956604] ; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41471363, 31270563, 41401505] ; National Science Foundation of United StatesNational Science Foundation (NSF) [DBI 1356077]
作者邮箱	guo.qinghua@gmail.com
作品OA属性	Green Submitted
引用统计	被引频次：72[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22120
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Calif Merced, Sch Engn, Sierra Nevada Res Inst, Merced, CA 95343 USA 4.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 5.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 6.Ohio State Univ, Sch Environm & Nat Resources, Ohio Agr Res & Dev Ctr, Wooster, OH 44691 USA
推荐引用方式 GB/T 7714	Li, Yumei,Guo, Qinghua,Su, Yanjun,et al. Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner[J]. ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,2017,130:308-316.
APA	Li, Yumei,Guo, Qinghua,Su, Yanjun,Tao, Shengli,Zhao, Kaiguang,&Xu, Guangcai.(2017).Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner.ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,130,308-316.
MLA	Li, Yumei,et al."Retrieving the gap fraction, element clumping index, and leaf area index of individual trees using single-scan data from a terrestrial laser scanner".ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING 130(2017):308-316.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Wang-2017-Molecular （711KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文