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

文献类型：期刊论文

作者Li, Yumei1; Guo, Qinghua6; Su, Yanjun6; Tao, Shengli4,5; Zhao, Kaiguang3; Xu, Guangcai
刊名ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
出版日期2017
卷号130页码:308-316
关键词Destructive sample Extinction coefficient Single scanning Terrestrial laser scanning Riegl VZ-400
ISSN号0924-2716
DOI10.1111/gcb.13467
文献子类Article
英文摘要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.
学科主题Biodiversity & Conservation ; Environmental Sciences & Ecology
出版地AMSTERDAM
电子版国际标准刊号1872-8235
WOS关键词GROUND-BASED LIDAR ; FOREST STRUCTURE ; PLANT CANOPIES ; DERIVATION ; DENSITY ; SIZE ; LAI ; ARCHITECTURE ; RADIATION ; PROFILE
语种英语
WOS记录号WOS:000394343300031
出版者ELSEVIER
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]
源URL[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.Ohio State Univ, Sch Environm & Nat Resources, Ohio Agr Res & Dev Ctr, Wooster, OH 44691 USA
3.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China
4.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China
5.Univ Calif Merced, Sch Engn, Sierra Nevada Res Inst, Merced, CA 95343 USA
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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.

入库方式： OAI收割

来源：植物研究所

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