Dataset: Variation in leaf reflectance spectra across the California flora partitioned by evolutionary history, geographic origin, and deep time

We collected leaf reflectance data from plants in a common garden where plants from across California are grown. We focused on 10 regions of the California Floristic Province represented at the Regional Parks Botanic Garden (RPBG). During the summer of 2020 and the early-fall of 2021, we visited RPBG with a back-pack spectroradiometer (ASD Fieldspec 4 and Fieldspec Pro) with an attached leaf clip and plant probe with its own light source (part number A122327). From each accessible plant we collected leaf-level reflectance spectra (380 to 2500 nm, 3 nm in the VNIR, 10 nm in the SWIR) from ~3 representative leaves). This dataset includes 631 region-by-species mean leaf-level reflectance spectra, both in raw reflectance as well as subjected to Continuum Removal.本研究采集了同质园中植物的叶片反射光谱数据，该同质园种植了来自加利福尼亚全州的各类植物。研究聚焦于加利福尼亚植物区系省（California Floristic Province）内的10个区域，这些区域的物种均在区域公园植物园（Regional Parks Botanic Garden, RPBG）中引种栽培。2020年夏季与2021年早秋时段，研究团队携搭载外置叶夹及自带光源的植物探头（零件编号A122327）的便携式光谱辐射仪（ASD Fieldspec 4与Fieldspec Pro）到访该植物园。从每株可接触的植株上选取约3片代表性叶片，采集其叶片尺度反射光谱，波段范围为380~2500 nm，其中可见光-近红外波段（Visible and Near Infrared, VNIR）采样间隔为3 nm，短波红外波段（Short-Wave Infrared, SWIR）采样间隔为10 nm。本数据集共包含631条按区域-物种分组的平均叶片反射光谱，涵盖原始反射率数据与经过连续统去除（Continuum Removal）处理后的光谱数据。