应用生态学报2017，Vol.28Issue(10)：3289-3296,8.DOI:10.13287/j.1001-9332.201710.013
淹水胁迫下棉花叶片高光谱特征及叶绿素含量估算模型
Hyper-spectral characteristics and estimation model of leaf chlorophyll content in cotton under waterlogging stress
摘要
Abstract
In order to rapidly monitor chlorophyll content in cotton functional leaf,and establish the quantitative relationship between chlorophyll content and spectral characteristic parameter of single cotton leaf,cotton was pot cultivated in a rain-shelter and subjected to waterlogging at squaring stage.Cotton leaf samples were taken and measured every 3 days after waterlogging.The correlation between chlorophyll content and spectral characteristic parameter was synthetically analyzed,and then the estimation model of chlorophyll content was established and verified.The results showed that the chlorophyll content decreased with increasing waterlogging stress.The original spectral reflectance and first-order differential spectral reflectance was negatively correlated with the chlorophyll content in the band near 580 and 697 nm.The estimation model established by difference vegetation index and normalized difference vegetation index performed better than that established by linear model of single band.Furthermore,the estimation model with (DR697-DR73s)/(DR697 +DR738) as the independent variable fitted the best with the correlation coefficient of 0.814,which could be utilized to estimate chlorophyll content of single leaf under waterlogging stress.关键词
棉花/高光谱特征/淹水胁迫/叶绿素含量/植被指数Key words
cotton/hyper-spectral characteristics/waterlogging stress/chlorophyll content/vegetation index引用本文复制引用
徐道青,刘小玲,王维,陈敏,阚画春,李常凤,郑曙峰..淹水胁迫下棉花叶片高光谱特征及叶绿素含量估算模型[J].应用生态学报,2017,28(10):3289-3296,8.基金项目
本文由公益性行业农业科研专项(201203032)、安徽省农业科学院项目(15B0730,13C0707)和安徽省油菜棉花产业技术体系专项资助 This work was supported by the Special Fund for Agro-scientific Research in the Public Interest (201203032),the Anhui Academy of Agricultural Sciences Fund (15B0730,13C0707),and the Anhui Agriculture Research System for Rapeseed-Cotton. （201203032）
