紫叶稠李叶片色素及氮含量与其光谱反射特性的相关性  

Relationships between Spectral Reflectance and Pigment or Nitrogen Concentrations in Leaves of Padus virginiana'Schubert'

作　　者：李雪飞[1] 韩甜甜[1] 董彦[1] 吴曼[1] 沈向[1] 

机构地区：[1]作物生物学国家重点实验室国家缓控释肥工程技术研究中心山东农业大学园艺科学与工程学院,泰安271018

出　　处：《林业科学》2011年第8期75-81,共7页Scientia Silvae Sinicae

基　　金：科技部国家科技支撑计划(2011BAD11B01;2011BAD11B02);山东省良种产业化工程

摘　　要：以紫叶稠李为试材,通过盆栽方式,在紫叶稠李叶片变色前进行控释肥处理,并定时测定叶片色素含量、氮含量及反射光谱。结果表明:紫叶稠李叶色由绿转紫后,其叶片的光谱反射特征发生显著变化,其反射峰明显向长波方向移动且反射率变小,叶片花色苷含量越高其反射峰向长波方向移动越明显。相关性分析表明:紫稠李叶片光谱反射率与花色苷含量在550～580nm波段呈极显著负相关,可初步作为遥感监测叶片花色苷含量变化差异的敏感波段;紫叶稠李叶片的光谱反射率与叶片氮含量、叶绿素含量相关性基本一致,其中在可见光波段(720～760nm)和近红外区(760～800nm)的相关性呈极显著正相关,可初步作为遥感监测叶片氮含量、叶绿素含量变化差异的敏感波段。The potting Padus virginiana ＇Schubert＇ was used as the plant material to explore the relationship between pigments,nitrogen content and spectral reflectance.A controlled release fertilizer was treated before the leaf discoloration.The spectral features of the leaves significantly changed after green leaves became purple.The reflection peak shifted right and reduced.The more anthocyanins content was,the more significant the reflection peak shifted.Correlation analysis demonstrated that at visible band 550-580 nm,the spectrum reflection had a significantly negative correlation with anthocyanins content.It could be used as sensitive band for monitoring the anthocyanins content in leaves of P.virginiana ＇Schubert＇ by remote sensing.The correlation between spectrum reflection and nitrogen was consistent with the correlation between spectrum reflection and chlorophylls：at visible band 720-760 nm and near infrared 760-800 nm,the correlation between spectrum reflection and nitrogen chlorophylls content was significantly positive.This spectral reflectance could be used to monitor the nitrogen and chlorophyll content in leaves by remote sensing.

关 键 词：控释肥 紫叶稠李 叶片 花色苷 光谱反射率 

分 类 号：S718.43[农业科学—林学]