用途：

       PlantPen植物NDVI测量仪是一款设计精巧、可快速测量植物NDVI指数的便携式仪器。根据植物的光谱反射系数可以评定叶片叶绿素相对含量。          

       NDVI(归一化植被指数)是通过计算植物叶片对660 nm和740 nm两种波长光的吸收和反射关系计算得到的值，反应植物叶绿素含量的重要参数。一个方便的叶夹、简单的两键操作以及明亮的显示屏使得PlantPen在不干扰测量植物（无叶片脱落或损坏）下仍方便使用。           

       有两个版本：测量PRI（光化学反射植被指数）的PRI 210和测量NDVI（归一化植被指数）的NDVI 310。PRI是测量植物在530nm和590nm处反射率的参数，这两个波段的光谱反射率受叶黄质循环和影响，并影响植物的光能利用效率。           

       测量数据存储于仪器内部，可选择蓝牙或USB数据线与计算机连接，使用专业FluorPen软件进行数据传输和可视化分析。

特点：        

设计紧凑、坚固的PRI非常适用于野外环境、植物温室等；       

 手持叶夹，双键操作，LED显示屏设计，使用方便；        

非侵入式无损测量；        

内置锂电池供电，方便耐用；       

USB或蓝牙传输数据，专业软件进行可视化分析；

应用领域：       

光合作用教学与研究；       

植物分子生物学；       

植物的筛选和实地研究；       

逆境生理；       

农学与林业； 

技术规格：

案例分析：

案例一：两种石耳在失水状态下的光谱反射率和光合效率研究      

 对于NDVI, Umbilicaria arctica和Umbilicaria hyperborea随着水势的变化有相同的变化趋势，均随着水势降低而降低，但两物种之间存在差异。完全水化的U. arctica的NDVI在0.55-0.75之间，U. hyperborea的NDVI比较低，在0.30-0.55之间；脱水后的U. arctica在0.55-0.30之间，而U. hyperborea在0.30-0.15之间。 

近期发表文献：       

CALDERÓN R., LUCENA C., TRAPERO-CASAS J. L. ET. AL. (2014): Soil temperature determines the reaction of olive cultivars to Verticillium dahliae pathotypes. PLoS One. Volume 9. DOI:10.1371/journal.pone.0110664       

CALDERÓN, R., ZARCO-TEJADA, P.J., LUCENA, C. ET AL. (2013):High-resolution airborne hyperspectral and thermal imagery for pre-visual detection of Verticillium wilt using fluorescence, temperature and narrow-band indices, Remote Sensing of Environment. Volume 139 Pages, 231-245. DOI:10.1016/j.rse.2013.07.031       

ZARCO-TEJADA P.J., GUILLEN-CLIMENT M.L., HERNANDEZ-CLEMENTE R. ET AL. (2013): Estimating leaf carotenoid content in vineyards using high resolution hyperspectral imagery acquired from an unmanned aerial vehicle. Agricultural and Forest Meteorology 171-172. Pages. 281-294. DOI:10.1016/j.agrformet.2012.12.013       

JUPA R., HÁJEK J., HAZDROVÁ J. ET AL. (2012): Interspecific differences in photosynthetic efficiency and spectral reflectance in two Umbilicaria species from Svalbard during controlled desiccation. Czech Polar Reports, Brno, Volume 2, Pages 31-41. DOI: 10.5817/CPR2012-1-4        

KOVÁR, M., VEVERKOVÁ, E. AND ČERNÝ, I. (2012): Utilization of Enfrared Thermography and Leaf Reflectance Indices in Evaluation of Effects of the Treatment of Sunflower (Helianthus annuus L.) by Biologically Active Compounds. Acta fytotechnica et zootechnica. Volume 15, Pages 23-28        

SHRESTHA S., BRUECK H. AND ASCH F. (2012): Chlorophyll index, photochemical reflectance index and chlorophyll fluorescence measurements of rice leaves supplied with different N levels. Journal of Photochemistry and Photobiology B: Biology. Volume 113, Pages 7–13. DOI:10.1016/j.jphotobiol.2012.04.008        

ZARCO-TEJADA P.J., GONZALES-DUGO V. AND BERNI J.A.J. (2012):Fluorescence, temperature and narrow-band indices acquired from a UAV platform for water stress detection using a micro-hyperspectral imager and a thermal camera. Remote Sensing of Environment. Volume, 117. Pages 322-337. DOI:10.1016/j.rse.2011.10.007        

CHYTYK, C. J., HUCL, P. J. AND GRAY, G. R. (2011): Leaf photosynthetic properties and biomass accumulation of selected western Canadian spring wheat cultivars. Canadian Journal of Plant of Science. Volume 91, Pages 305-314. DOI: 10.4141/CJPS0916. 

产地：捷克