干旱区生态环境知识资源中心(Arid): Karst vegetation coverage detection using UAV multispectral vegetation indices and machine learning algorithm

Arid

DOI	10.1186/s13007-023-00982-7
	Karst vegetation coverage detection using UAV multispectral vegetation indices and machine learning algorithm
	Pan, Wen; Wang, Xiaoyu; Sun, Yan; Wang, Jia; Li, Yanjie; Li, Sheng
通讯作者	Li, YJ ; Li, S
来源期刊	PLANT METHODS
EISSN	1746-4811
出版年	2023
卷号	19 期号:1
英文摘要	BackgroundKarst vegetation is of great significance for ecological restoration in karst areas. Vegetation Indices (VIs) are mainly related to plant yield which is helpful to understand the status of ecological restoration in karst areas. Recently, karst vegetation surveys have gradually shifted from field surveys to remote sensing-based methods. Coupled with the machine learning methods, the Unmanned Aerial Vehicle (UAV) multispectral remote sensing data can effectively improve the detection accuracy of vegetation and extract the important spectrum features.ResultsIn this study, UAV multispectral image data at flight altitudes of 100 m, 200 m, and 400 m were collected to be applied for vegetation detection in a karst area. The resulting ground resolutions of the 100 m, 200 m, and 400 m data are 5.29, 10.58, and 21.16 cm/pixel, respectively. Four machine learning models, including Random Forest (RF), Support Vector Machine (SVM), Gradient Boosting Machine (GBM), and Deep Learning (DL), were compared to test the performance of vegetation coverage detection. 5 spectral values (Red, Green, Blue, NIR, Red edge) and 16 VIs were selected to perform variable importance analysis on the best detection models. The results show that the best model for each flight altitude has the highest accuracy in detecting its training data (over 90%), and the GBM model constructed based on all data at all flight altitudes yields the best detection performance covering all data, with an overall accuracy of 95.66%. The variables that were significantly correlated and not correlated with the best model were the Modified Soil Adjusted Vegetation Index (MSAVI) and the Modified Anthocyanin Content Index (MACI), respectively. Finally, the best model was used to invert the complete UAV images at different flight altitudes.ConclusionsIn general, the GBM_all model constructed based on UAV imaging with all flight altitudes was feasible to accurately detect karst vegetation coverage. The prediction models constructed based on data from different flight altitudes had a certain similarity in the distribution of vegetation index importance. Combined with the method of visual interpretation, the karst green vegetation predicted by the best model was in good agreement with the ground truth, and other land types including hay, rock, and soil were well predicted. This study provided a methodological reference for the detection of karst vegetation coverage in eastern China.
英文关键词	UAV Machine learning Classification Karst Vegetation indices
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000919766200001
WOS关键词	RANDOM FOREST ; NONDESTRUCTIVE ESTIMATION ; IMAGE CLASSIFICATION ; ANTHOCYANIN CONTENT ; BIOMASS ; DESERTIFICATION ; SELECTION ; SYSTEMS ; TRENDS ; NDVI
WOS类目	Biochemical Research Methods ; Plant Sciences
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398036
推荐引用方式 GB/T 7714	Pan, Wen,Wang, Xiaoyu,Sun, Yan,et al. Karst vegetation coverage detection using UAV multispectral vegetation indices and machine learning algorithm[J],2023,19(1).
APA	Pan, Wen,Wang, Xiaoyu,Sun, Yan,Wang, Jia,Li, Yanjie,&Li, Sheng.(2023).Karst vegetation coverage detection using UAV multispectral vegetation indices and machine learning algorithm.PLANT METHODS,19(1).
MLA	Pan, Wen,et al."Karst vegetation coverage detection using UAV multispectral vegetation indices and machine learning algorithm".PLANT METHODS 19.1(2023).