激光生物学报Issue(5)：428-435,8.DOI:10.3969/j.issn.1007-7146.2015.05.006
水稻冠层高光谱特征变量与叶片叶绿素含量的相关性研究
Correlation Analysis of Rice Canopy Hyperspectral Characteristic Variables and Leaf Chlorophyll Content
摘要
Abstract
The aim of this paper is to explore the response regularity of canopy spectral on chlorophyll content for rice. Field trials of different nitrogen application processing are set using double-season early rice as materials.Rice canopy spectrum and chlorophyll content of leaves were measured.The characteristic variables were calculated based on canopy reflectance spectral.The relationship between rice canopy hyperspectral characteristic variables and chlorophyll content was studied.The results showed that applying nitrogen fertilizer had a significant effect on canopy reflectance spectral. The reflectance of rice without applying nitrogen fertilizer was greater than ones with nitrogen fertilizer in visible light,es-pecially at green peak region where the wavelength was around 550 nm.The reflectance in near infrared region increased with the nitrogen fertilizer application.The characteristic variables based on spectral position such as red edge position and reflectance in red valley region presented a great correlation with chlorophyll content.Reflectance in red valley re-gion Octreases and red edge moves to longer wavelengths with the increase of chlorophyll content.The ratio vegetation in-dices R800 /R550,R750 /R553 and R990 /R553,the pigment specific simple ratio PSSRa,PSSRb and chla,chlb, chl (a +b)showed a significant positive correlation in the two varieties ,which can be used as characteristic variables in rice canopy chlorophyll monitoring.关键词
水稻/冠层光谱/高光谱遥感/叶绿素含量Key words
rice/canopy reflectance spectra/hyperspectral remote sensing/chlorophyll content分类
信息技术与安全科学引用本文复制引用
刘桃菊,胡雯君,张笑东,江绍琳,唐建军,徐涛,陈美球..水稻冠层高光谱特征变量与叶片叶绿素含量的相关性研究[J].激光生物学报,2015,(5):428-435,8.基金项目
国家自然科学基金项目 （）
