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Fluorescence Lidar for remote sensing of plant status

用于植物状态遥感的荧光激光雷达

基本信息

批准号：
11450110
负责人：
SAITO Yasunori
金额：
$ 5.89万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2002
项目状态：
已结题

项目摘要

Results of this year (2002)We have continued lidar experiments on plants sensing.1) Reconstruction of a fluorescence lidar for plant fluorescence lifetime monitoring:Lidar receiver system was newly designed and constructed that was capable of detection of wavelengths simultaneously, those were of fluorescence (650nm-750nm) and of scattering (532nm). For this purpose, two sets of MCP-PMT with a specific optimal filter were prepared.2) Remote sensing of fluorescence lifetime of plane tree leaves:The fluorescence lifetime of green leaves measured in the evening was shorter than those measured in a daytime. It seemed that strong sunlight radiation weakened the activities of plant photosynthesis. Lifetimes of leaves became longer with their senescence process, namely their lifetimes were longer in order of the color of red, yellow and green. It was shown that the leaves colors were directly connected to plant vitalities.Final results for the research period from 1999 to 20021) Plants emitte … More d broad fluorescence in the visible spectral region. It was mainly separated into two regions, Blue-green region and Red-farred region with several peaks of the spectra at 460nm, 530nm, 685nm and 740nm.2) Fluorescence lifetimes of plant were about several hundreds of pico-second and they were easily distributed by environmental changes.3) The fluorescence imaging lidar was developed, and the monthly variation in chlorophyll concentration of living ginkgo tree leaves 65m away from the lidar system was remotely estimated.4) Fluorescence lifetime monitoring lidar was developed, leaves lifetimes effectively reflected their senescence process. The lifetimes of red leaves were longer than those of yellow and green leaves, and green leaves had the shortest lifetimes.We have successfully developed plant sensing lidar systems with laser-induced fluorescence method, fluorescence spectra and fluorescence lifetime. Sensing results were strongly supported that the fluorescence lidar systems were quite a powerful apparatus for plants status monitoring as a non-destructive, non-chemical, in-vivo and remote sensing technique. Less

本年度（2002年）的研究结果我们继续进行了激光雷达在植物检测方面的实验。1）重建用于植物荧光寿命监测的荧光激光雷达：新设计和建造的激光雷达接收系统能够同时检测荧光波长（650 nm-750 nm）和散射波长（532 nm）。2）悬铃木叶片荧光寿命的遥感研究：绿色叶片荧光寿命在夜间比白天短。强烈的太阳辐射减弱了植物的光合作用。叶片的寿命随衰老进程而延长，即红、黄、绿色的寿命依次延长。研究结果表明，叶色与植物生命力有直接关系。1999 - 2002年的研究结果 ...更多信息 d可见光谱区的宽荧光。2）植物的荧光寿命在几百皮秒左右，易受环境变化的影响而发生分布; 3）研制了荧光成像激光雷达，4）研制了荧光寿命监测激光雷达，叶片寿命有效地反映了叶片的衰老过程。红色叶片的寿命比黄色和绿色叶片的寿命长，绿色叶片的寿命最短。荧光激光雷达作为一种无损、非化学、活体和遥感的植物状态监测技术，是一种非常有效的植物状态监测仪器。少