光谱学与光谱分析 |
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Preliminary Exploring of Hyperspectral Remote Sensing Experiment for Nitrogen and Phosphorus in Water |
GONG Shao-qi,HUANG Jia-zhu*,LI Yun-mei,LU Wan-ning,WANG Hai-jun,WANG Guo-xiang |
Key Laboratory of Virtual Geographical Environment of MOE, Nanjing Normal University, Nanjing 210097, China |
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Abstract The content of nitrogen and phosphorus in the waters is an important index to measure water quality, and the technique of remote sensing plays a large role in monitoring the change in environment. The reflectance spectra of nitrogen and phosphorus with different concentrations were measured to discover their special features under pure water condition in the laboratory by hyperspectral remote sensing technique. The result shows that nitrogen has reflectance peaks at 404 and 477 nm, and phosphorus at 350 nm, and these reflectance peaks have a good correlation with their concentrations, then a quantitative retrieval model was deduced for nitrogen and phosphorus based on that. These results will lay an important basis for further monitoring nitrogen and phosphorus by remote sensing technique in the big inland lakes, reservoirs and rivers.
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Received: 2006-12-19
Accepted: 2007-03-26
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Corresponding Authors:
HUANG Jia-zhu
E-mail: gongshaoqi@hotmail.com
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