Forest species diversity mapping using airborne LiDAR and hyperspectral data in a subtropical forest in China
文献类型:期刊论文
作者 | Zhao, Yujin1; Zeng, Yuan; Zheng, Zhaoju; Dong, Wenxue; Zhao, Dan; Wu, Bingfang; Zhao, Qianjun |
刊名 | REMOTE SENSING OF ENVIRONMENT
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出版日期 | 2018 |
卷号 | 213页码:104-114 |
关键词 | Imaging spectroscopy LiDAR Leaf biochemical components Species richness Forest biodiversity Shannon-Wiener |
ISSN号 | 0034-4257 |
DOI | 10.1016/j.rse.2018.05.014 |
文献子类 | Article |
英文摘要 | Monitoring biodiversity is essential for the conservation and management of forest resources. A method called spectranomics that maps the diversity of forest species based on species-driven leaf optical traits using imaging spectroscopy has been developed for tropical forests in earlier studies. In this study we applied the spectranomics method in combination with airborne hyperspectral (PHI-3 sensor with 1 m spatial resolution) and LiDAR ( > 4 points/m(2)) data to first identify interspecies variations in biochemical and structural properties of trees and then estimate the tree species diversity within the Shennongjia Forest Nature Reserve in China. Firstly, we used the watershed algorithm based on morphological crown control to isolate individual tree crowns (ITCs) from the LiDAR data. For each ITC, we then calculated seven vegetation indices (VIs) representing key biochemical properties from the hyperspectral data and additionally derived the LiDAR-based tree height which was identified to support the discrimination of the tree species in a preceding analysis. Finally we utilized the combination of the seven selected VIs and tree height as input to a self-adaptive Fuzzy C-Means (FCM) clustering algorithm. The FCM algorithm was applied to fixed subsets of 30 m x 30 m and it was assumed that the number of clusters identified within a subset represents the number of occurring species. The species richness and Shannon-Wiener diversity index calculated from the clustering outputs correlated well with the field reference data (R-2 = 0.83, RMSE = 0.25). The results show that forest species diversity can be directly predicted using the suggested clustering method based on crown-by-crown variations in biochemical and structural properties in the examined subtropical forest without the need to distinguish the individual tree species. |
学科主题 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
出版地 | NEW YORK |
电子版国际标准刊号 | 1879-0704 |
WOS关键词 | ISOLATING INDIVIDUAL TREES ; VASCULAR PLANT RICHNESS ; IMAGING SPECTROSCOPY ; SMALL FOOTPRINT ; MEDITERRANEAN FORESTS ; FLORISTIC COMPOSITION ; TROPICAL FORESTS ; ALPHA-DIVERSITY ; CANOPY HEIGHT ; WATER-CONTENT |
语种 | 英语 |
WOS记录号 | WOS:000437383600008 |
出版者 | ELSEVIER SCIENCE INC |
资助机构 | National Key Research and Development Program [2016YFC0500201] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41671365, 41771464] ; Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07104-001] ; Shanghai Hangyao Information Technology Cooperation |
源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/20729] ![]() |
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 Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Yujin,Zeng, Yuan,Zheng, Zhaoju,et al. Forest species diversity mapping using airborne LiDAR and hyperspectral data in a subtropical forest in China[J]. REMOTE SENSING OF ENVIRONMENT,2018,213:104-114. |
APA | Zhao, Yujin.,Zeng, Yuan.,Zheng, Zhaoju.,Dong, Wenxue.,Zhao, Dan.,...&Zhao, Qianjun.(2018).Forest species diversity mapping using airborne LiDAR and hyperspectral data in a subtropical forest in China.REMOTE SENSING OF ENVIRONMENT,213,104-114. |
MLA | Zhao, Yujin,et al."Forest species diversity mapping using airborne LiDAR and hyperspectral data in a subtropical forest in China".REMOTE SENSING OF ENVIRONMENT 213(2018):104-114. |
入库方式: OAI收割
来源:植物研究所
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