With plant biodiversity under global threat, there is an urgent need to monitor the spatial distribution of multiple axes of biodiversity. Remote sensing is a critical tool in this endeavour. One remote sensing approach for detecting biodiversity is based on the hypothesis that the spectral diversity of plant communities is a surrogate of multiple dimensions of biodiversity. We investigated the generality of this ‘surrogacy’ for spectral, species, functional and phylogenetic diversity across 1,267 plots in the Greater Cape Floristic Region (GCFR), a hyper-diverse region comprising several biomes and two adjacent global biodiversity hotspots.

中文翻译：

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植物光谱多样性作为物种、功能和系统发育多样性的替代物，跨越高度多样化的生物地理区域

随着植物生物多样性受到全球威胁，迫切需要监测生物多样性多轴的空间分布。遥感是这一努力的关键工具。一种用于检测生物多样性的遥感方法是基于植物群落光谱多样性是生物多样性多个维度的替代物的假设。我们调查了大开普植物区 (GCFR) 的 1,267 个地块的光谱、物种、功能和系统发育多样性的“替代”的普遍性，GCFR 是一个高度多样化的区域，包括几个生物群落和两个相邻的全球生物多样性热点。