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首页> 外文会议>Conference on Forest and Water in A Changing Environment >RELATIONSHIPS BETWEEN SPECTRAL REFLECTANCE AND PHYSIOLOGICAL PARAMETERS IN OLIVE (Olea europaea L.) IN RESPONSE TO WATER STRESS
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RELATIONSHIPS BETWEEN SPECTRAL REFLECTANCE AND PHYSIOLOGICAL PARAMETERS IN OLIVE (Olea europaea L.) IN RESPONSE TO WATER STRESS

机译：橄榄（Olea Europaea L.）光谱反射率和生理参数的关系响应水分胁迫

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摘要

An important potential application of non-invasive remote-sensing techniques is to monitor plant stress and photosynthetic status (Zarco-Tejada et al., 2003; Dobrowski et al., 2005) and to provide information on the occurrence and intensity of water stress (Goward et al., 2002). In the situation of employing environmental remote sensing, improved knowledge about the relationship between leaf reflectance indices and different intensities of drought is essential for the discrimination of the different status of stress condition of plants. In this paper we present and discuss the results obtained in experiments focused on determining which particular wavebands or spectral indices may be most effective in detecting physiological, water and pigment change induced by differences in drought occurrences. In particular we address two main issues: 1) how spectral reflectance is modified when plants suffer from different levels of drought, and 2) if it is possible to remotely detect physiological changes induced by different stress by sensitive spectral indices.
机译：非侵入性遥感技术的重要潜在应用是监测植物应力和光合状态（Zarco-Tejada等，2003; Dobrowski等，2005）并提供有关水分压力的发生和强度的信息（ Goward等人。，2002）。在采用环境遥感的情况下，提高了关于叶片反射率指数与干旱不同强度之间关系的知识对于群体植物应激状况的不同状态是必不可少的。在本文中，我们展示并讨论了在专注于确定哪些特定波带或光谱指标在检测受干旱发生差异诱导的生理，水和颜料变化方面最有效的实验中获得的结果。特别地，我们解决了两个主要问题：1）当植物遭受不同水平的干旱水平和2），如果可以通过敏感光谱指标远程检测因不同应力引起的生理变化，如何改变光谱反射率。

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