南京林业大学学报（自然科学版）
Tree height estimations for different forest canopies in natural secondary forests based on ULS, TLS and ultrasonic altimeter systems
ZHAO Yinghui, YANG Haicheng, ZHEN Zhen
JOURNAL OF NANJING FORESTRY UNIVERSITY . 2021, (4): 23 -32 .  DOI: 10.12302/j.issn.1000-2006.202009021

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