关键词: “珠海一号”高光谱, 入侵植物, 薇甘菊, 地物精细光谱, 决策树

Abstract: Based on the hyperspectral remote sensing image of ‘Zhuhai-1’ and the ground spectral data of Mikania micrantha, the decision tree hierarchical classification extraction method was used to realize the identification and extraction of large-scale invasion information of M. micrantha. The results showed that the OHS hyperspectral data could accurately reflect the spectral characteristics of M. micrantha. In the 32 bands of OHS hyperspectral data, Band13 (665 nm), Band22 (780 nm), Band25 (833 nm), Band26 (850 nm), Band27 (865 nm), Band28 (880 nm) were the best bands for the identification and information extraction of M. micrantha. Using OHS hyperspectral data to monitor the distribution of M. micrantha, the extraction accuracy reached 82.6%, which could meet the daily business needs of M. micrantha invasion monitoring and provide powerful help for the accurate control of M. micrantha.

Key words: ‘Zhuhai-1’ hyperspectral, invasive plant, Mikania micrantha, object spectrum, decision tree