| 光谱学与光谱分析 |
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| Monitoring the Seasonal Distribution Pattern of Chlorophyll-a Concentration in Taihu Lake Based on CBERS-1 Imageries |
| ZHOU Lian-cheng1,2, CHEN Jun1,2*, SUN Ji-hong1,2, FU Jun1,2 |
1. The Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao 266071, China
2. Qingdao Institute of Marine Geology, Qingdao 266071, China |
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Abstract Chlorophyll-a concentration is an important indicator for estimating the eutrophication degree of a lake. Taking advantage of the water qualities experimental data on 27 and 28 October, 2003, the paper constructs the chlorophyll-a concentration estimating model for Taihu Lake, China. And then, the study uses this chlorophyll-a concentration estimation model to estimate the seasonal distribution pattern of chlorophyll-a concentration from CBERS-1 imageries on 5 April, 28 April, 16 May, 5 August, and 30 October of 2006, and 5 July, 2007. According to the research results, it was found that the chlorophyll-a concentration is lower in summer and higher in autumn and winter, and could illuminate the four stages of phytoplankton growth in a year; Compared with the previous study reports, the chlorophyll-a concentration is higher than the actual concentration by estimating from the CBERS-1. There are still some problems for applying the CBERS-1 imageries to water qualities remote sensing, which should be improved by further study.
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Received: 2010-05-10
Accepted: 2010-08-25
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Corresponding Authors:
CHEN Jun
E-mail: chenjun820711@163.com
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