Sedibana Lesibana, Kganyago Mahlatse, Jaca Thulisile, Yessoufou Kowiyou
Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, Johannesburg, South Africa.
South African National Biodiversity Institute, Pretoria, South Africa.
Data Brief. 2025 Apr 28;60:111582. doi: 10.1016/j.dib.2025.111582. eCollection 2025 Jun.
This paper presents the first spectral reflectance dataset of snakegrass (Equisetum hyemale L.) invasive alien species recorded in South Africa. A total of 338 plant specimens were collected in Howick, KwaZulu-Natal province, and carefully stored in a cooler box for less than 24 hours of collection to retain the structural and biochemical state of the specimens and their overall characteristics. Then, spectral reflectance measurements were collected under laboratory conditions using the PSR-300 Spectral Evolution full-range spectrometer, equipped with a bifurbucated cable, a leaf clip and an artificial lighting system. Next, spectral preprocessing was performed in R statistical software to remove noisy spectra and regions and perform averaging per sample. The dataset is critical for early detection of the species and spatial distribution mapping using remotely piloted systems and earth observation satellites, providing essential information for aiding containment and eradication efforts.
本文展示了在南非记录的蛇草（木贼属草本植物）这一外来入侵物种的首个光谱反射率数据集。在夸祖鲁 - 纳塔尔省的豪伊克共采集了338个植物标本，并小心存放在冷藏箱中，采集后存放时间少于24小时，以保持标本的结构和生化状态及其整体特征。然后，在实验室条件下使用配备了分叉电缆、叶夹和人工照明系统的PSR - 300光谱进化全量程光谱仪收集光谱反射率测量数据。接下来，在R统计软件中进行光谱预处理，以去除噪声光谱和区域，并对每个样本进行平均。该数据集对于使用遥控系统和地球观测卫星早期检测该物种以及绘制空间分布图至关重要，为协助遏制和根除工作提供了重要信息。
