As the supplement of spaceborne and airborne imaging spectrometer system, field Imaging spectrometer system spans a very broad range of applications. Imaging spectrometer system of this new kind could provide vital information especially for which spaceborne or airborne remote sensing could not be competent, such as proximal detection of plant population, individual plant or plant organs for site-specific management in precision agriculture. A new self-developed imaging spectrometer system was utilized to monitor spatio-temporal dynamics of spectral changes of plant leaves in response to dehydratioa The phenomenon of blue shift of red edge of plant leaves was successfully detected and visualized in the form of image series. The patterns of photochemical reflectance index(PRI) of leaves during dehydration were compared and confirmed by fluorescence parameter quantum rnyield Our results show that FISS has good spectral and radiometric properties and could be used in quantitative researches and precise information mapping.%地面成像光谱系统不仅可以作为航空航天成像光谱系统的重要补充,而且能够在更为微观的尺度上满足多元化应用需求,弥补大尺度远距离遥感难以发挥作用的领域,诸如可以实现对植物群体、单个植株、器官的精细探测,对农作物个体植的生长或者诊断检测,适合在农业等领域的基于位置信息的精准管理.采用自行设计的新型地面成像光谱系统FISS,获取了喀斯特地区四种植物叶片在离体水分散失过程中的高分辨率成像光谱序列数据,展示了叶片“红边蓝移”现象的高分辨率时空变化信息,探测了PRI指数变化趋势以及与荧光参数量子产量的对比验证,结果表明本系统具有较高的光谱辐射性能,可用于小尺度近地面植物群落和个体研究,具有广阔的应用前景和潜力.
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