摘要
微量元素与植物光谱特征的研究是光学遥感定量化研究的重要内容之一。本研究利用高光谱地面光谱仪 (GER)在湖南黔阳地区不同地质地球化学背景下的同一垂直剖面上分别测量了岩石、土壤植物 (林灌草 )的反射光谱曲线和植物叶片的 8种微量元素含量。通过研究微量元素Fe ,Mn ,Cu ,Zn ,Co,Cr,Mo ,B与植物 (包括林灌草 )反射光谱间的相关性研究发现Co的含量与植物光谱绿区 ( 0 .5 6μm附近 )反射率存在强的负相关 ,Mn ,B ,Mo和Zn分别在可见光、近红外、短波红外存在较好的相关性和光谱响应。
This study presents a mechanism analysis to the response of leaf spectrum result from trace elements. A wide range of leaves were collected including variations in species and leaf status. The biochemistry composition was measured using ICP-AES techniques to determine Fe, Mn, Cu, Zn, Co, Cr, Mo and B contents. Concurrently, leaf reflectance was measured with a high spectral resolution spectrophotometer in the 400-2500 nm range with approximately 1.1 nm spectral resolution. Trace elements are helpful to natural growth of vegetable, and the detection in trace elements' status is an important approach to find out growth condition of vegetable. The study for trace element and spectral characters is one of important methods in quantitative remote sensing. In this paper, spectrum data and trace elements are firstly analyzed using different techniques, and in the end the relationship was studied between trace elements and leaf spectrum, and differential coefficient spectrum. Result shows that Co content is strongly correlative with leaf spectral relfectivity negatively in around 569.22 nm. In addition, Mn, B, Mo and Zn are in good consistent with absorption features of leaf spectrum in (0.4, 1.16), (0.47, 0.88, 2.19, 2.34), 1.62 and 2.34 μm. Its' mechanism is discussed chiefly other than only discovering the location of leaf spectrum response resulted from different trace elements.
出处
《遥感学报》
EI
CSCD
北大核心
2001年第5期334-339,共6页
NATIONAL REMOTE SENSING BULLETIN
基金
中国科学院知识创新工程项目CX0 0 0 0 2 7及CX0 0 0 0 5 0的支持
