3D lidar imaging for detecting and understanding plant responses and canopy structure
3D lidar imaging for detecting and understanding plant responses and canopy structure
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DOI：
10.1093/jxb/erl142
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发表时间：
2007-03-01
影响因子：
6.9
通讯作者：
Konishi, Atsumi
中科院分区：
文献类型：
--
作者：
Omasa, Kenji;Hosoi, Fumiki;Konishi, Atsumi
了解和诊断植物对胁迫的反应将极大地受益于对植物特性的三维(3D)测量和分析，因为植物的反应与其3D结构密切相关。最近，光探测和测距(激光雷达)已成为直接测量植物结构的强大工具。在这里，通过回顾激光雷达系统的发展及其从树叶水平到树冠遥感的应用，展示了利用3D激光雷达成像来估计植物属性，如树冠高度、树冠结构、碳储量和物种，并评估了植物生长和形状响应。此外，还展示了最近创建的结合自然颜色、叶绿素荧光、光化学反射指数和叶温图像的精确3D激光雷达图像，从而提供关于色素、光合作用、蒸腾作用、气孔开放和形状对环境胁迫的响应的信息；这些数据可以与使用计算机图形技术的植物的3D图像相结合。未来的激光雷达应用将提供对各种植物特性的更准确的动态估计，这将提高我们对植物对胁迫的反应以及植物与环境之间的相互作用的理解。此外，将三维激光雷达与其他被动和主动成像技术相结合，将有可能提高机载和卫星遥感的准确性，并有可能分析农业和生态应用以及全球生物圈观测中各种物质的生态生理反应和水平的三维信息。
Understanding and diagnosing plant responses to stress will benefit greatly from three-dimensional (3D) measurement and analysis of plant properties because plant responses are strongly related to their 3D structures. Light detection and ranging (lidar) has recently emerged as a powerful tool for direct 3D measurement of plant structure. Here the use of 3D lidar imaging to estimate plant properties such as canopy height, canopy structure, carbon stock, and species is demonstrated, and plant growth and shape responses are assessed by reviewing the development of lidar systems and their applications from the leaf level to canopy remote sensing. In addition, the recent creation of accurate 3D lidar images combined with natural colour, chlorophyll fluorescence, photochemical reflectance index, and leaf temperature images is demonstrated, thereby providing information on responses of pigments, photosynthesis, transpiration, stomatal opening, and shape to environmental stresses; these data can be integrated with 3D images of the plants using computer graphics techniques. Future lidar applications that provide more accurate dynamic estimation of various plant properties should improve our understanding of plant responses to stress and of interactions between plants and their environment. Moreover, combining 3D lidar with other passive and active imaging techniques will potentially improve the accuracy of airborne and satellite remote sensing, and make it possible to analyse 3D information on ecophysiological responses and levels of various substances in agricultural and ecological applications and in observations of the global biosphere.