点击次数：

影响因子：4.848

DOI码：10.3390/rs14020271

发表刊物：Remote Sensing

关键字：individual tree AGB; machine learning; ensemble learning; tree species classification

摘要：Individual-tree aboveground biomass (AGB) estimation can highlight the spatial distribution of AGB and is vital for precision forestry. Accurately estimating individual tree AGB is a requisite for accurate forest carbon stock assessment of natural secondary forests (NSFs). In this study, we investigated the performance of three machine learning and three ensemble learning algorithms in tree species classification based on airborne laser scanning (ALS) and WorldView-3 imagery, inversed the diameter at breast height (DBH) using an optimal tree height curve model, and mapped individual tree AGB for a site in northeast China using additive biomass equations, tree species, and inversed DBH. The results showed that the combination of ALS and WorldView-3 performed better than either single data source in tree species classification, and ensemble learning algorithms outperformed machine learning algorithms (except CNN). Seven tree species had satisfactory accuracy of individual tree AGB estimation, with R2 values ranging from 0.68 to 0.85 and RMSE ranging from 7.47 kg to 36.83 kg. The average individual tree AGB was 125.32 kg and the forest AGB was 113.58 Mg/ha in the Maoershan study site in Heilongjiang Province, China. This study provides a way to classify tree species and estimate individual tree AGB of NSFs based on ALS data and WorldView-3 imagery.

合写作者：Lindi J Quackenbush,Ye Ma

第一作者：Q1, Yinghui Zhao

论文类型：期刊论文

通讯作者：Zhen Zhen*

卷号：14

期号：2

页面范围：271

ISSN号：2072-4292

是否译文：否

发表时间：2022-01-01

收录刊物：SCI