铅锌矿区毛轴蕨反射波谱特征及其机理分析

Spectral reflectance characteristics and mechanism analysis for Pteridium revolutum in Pb-Zn deposit

为了研究铅锌矿对植物反射光谱的影响,以毛轴蕨野外测试光谱和叶灰分微量元素含量为基础,分析铅锌矿区和对照区毛轴蕨光谱特征和微量元素含量特征,并研究红边蓝移量和叶绿素归一化指数与各微量元素含量的相关性.结果表明:矿区毛轴蕨在近红外区域反射率要低于背景区,毛轴蕨红边位置发生了2～20nm的蓝移,根据叶微量元素含量分析确定毛轴蕨叶对铅、锌、锰、锶、钡、砷6种元素有较强的积累作用;毛轴蕨红边蓝移偏移量与锰、锶、铅、锌、钡、砷等几种微量元素含量均成正相关,除锶元素外,叶绿素归一化指数与几种主要元素均成负相关.

In order to study the influence from lead-zinc mine on plant spectral reflectance,the reflectance spectrum of Pteridium revolutum were measured and the contents of trace elements in the leaves were analyzed in the paper.The correlation between both the blue shift and ChlNDI with the content of metal elements were also researched.The results indicated that：the reflectance of Pteridium revolutum leaves in near infrared region in Pb-Zn deposit was lower than that of the background area,the blue shift of red edge reached 2-20 nm;according to leaves content of trace elements,the Pb,Zn,Mn,Sr,Ba and As were intensely accumulated by the the Pteridium revolutum;the blue shift was positively related with the content of Pb,Zn,Mn,Sr,Ba and As;there was a negative correlation between ChlNDI and the above content of trace elements except Sr.