THz Water Transmittance and Leaf Surface Area: An Effective Nondestructive Method for Determining Leaf Water Content
THz Water Transmittance and Leaf Surface Area: An Effective Nondestructive Method for Determining Leaf Water Content
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DOI：
10.3390/s19224838
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发表时间：
2019-11-01
期刊：
影响因子：
3.9
通讯作者：
Corona, Piermaria
中科院分区：
文献类型：
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作者：
Pagano, Mario;Baldacci, Lorenzo;Corona, Piermaria
水分供应是植物生产力的主要限制因素，并在给定区域的植物物种分布中起着关键作用。新技术，如太赫兹量子级联激光器（THz-QCL）已被证明是测量和监测叶片含水量的非侵入性，有效和准确的工具。本研究探讨了利用先进的THz-QCL装置测量欧榛叶片绝对含水量的可行性，月桂，铁木，冬青栎，栎属，和葡萄属vinifera L.（cv. Sangiovese）。最近提出的，简单的光谱技术，包括在确定太赫兹光束通过结合摄影测量的叶面积的叶子的传输。在所有研究的植物中，叶光学厚度（tau）和叶表面积（L-A）的乘积与叶水质量（M-w）之间都存在显著的相关性（Pearson's r检验，p
Water availability is a major limiting factor in plant productivity and plays a key role in plant species distribution over a given area. New technologies, such as terahertz quantum cascade lasers (THz-QCLs) have proven to be non-invasive, effective, and accurate tools for measuring and monitoring leaf water content. This study explores the feasibility of using an advanced THz-QCL device for measuring the absolute leaf water content in Corylus avellana L., Laurus nobilis L., Ostrya carpinifolia Scop., Quercus ilex L., Quercus suber L., and Vitis vinifera L. (cv. Sangiovese). A recently proposed, simple spectroscopic technique was used, consisting in determining the transmission of the THz light beam through the leaf combined with a photographic measurement of the leaf area. A significant correlation was found between the product of the leaf optical depth (tau) and the leaf surface area (L-A) with the leaf water mass (M-w) for all the studied species (Pearson's r test, p