| 巢湖浮游植物叶绿素含量与反射光谱特征的关系 |
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| 引用本文： | 李素菊,吴倩,王学军,朴秀英,戴永宁.巢湖浮游植物叶绿素含量与反射光谱特征的关系[J].湖泊科学,2002,14(3):228-234. |
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| 作者姓名： | 李素菊 吴倩 王学军 朴秀英 戴永宁 |
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| 作者单位： | 地表过程分析与模拟教育部重点实验室,北京大学城市与环境学系,北京,100871 |
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| 基金项目： | 高等学校优秀青年教师教学科研奖励计划和国家自然科学基金委员会创新群体科学基金(40024101)联合资助. |
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| 摘 要： | 利用高光谱地物光谱仪在巢湖进行了反射光谱测量和同步水质采样分析。在分析巢湖水体反射光谱特征的基础上，通过研究水体光谱反射率与叶绿素浓度之间的关系，利用反射率比值法和一阶微分法分别建立了叶绿素a的遥感定量模型。结果表明反射率比值R705nm/R680nm和690nm反射率的一阶微分均与叶绿素a浓度有较好的相关性，且用反射率比值法估算叶绿素a效果较好。
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| 关 键 词： | 浮游植物 叶绿素 反射光谱 遥感 水质 巢湖 |
| 收稿时间： | 2/4/2002 12:00:00 AM |
| 修稿时间： | 2002年2月4日 |
Correlations Between Reflectance Spectra and Contents of Chlorophyll-a in Chaohu Lake |
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| LI Suju,WU Qian,WANG Xuejun,PIAO Xiuying and DAI Yongning.Correlations Between Reflectance Spectra and Contents of Chlorophyll-a in Chaohu Lake[J].Journal of Lake Science,2002,14(3):228-234. |
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| Authors: | LI Suju WU Qian WANG Xuejun PIAO Xiuying and DAI Yongning |
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| Institution: | Key Laboratory for Surface Processes, Ministry of Education;Departmentof Urban and Environment Sciences, Peking University, Beijing 100871, P. R. China,Key Laboratory for Surface Processes, Ministry of Education;Departmentof Urban and Environment Sciences, Peking University, Beijing 100871, P. R. China,Key Laboratory for Surface Processes, Ministry of Education;Departmentof Urban and Environment Sciences, Peking University, Beijing 100871, P. R. China,Key Laboratory for Surface Processes, Ministry of Education;Departmentof Urban and Environment Sciences, Peking University, Beijing 100871, P. R. China and Key Laboratory for Surface Processes, Ministry of Education;Departmentof Urban and Environment Sciences, Peking University, Beijing 100871, P. R. China |
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| Abstract: | Chaohu Lake is one of the biggest freshwater lakes of China. This study was conducted to establish correlations between reflectance spectra and contents of chlorophyll a in Chaohu Lake, which was in eutrophic status. Reflectance spectra were measured during November, 2001 by using ASD FieldSpec HandHeld radiometer. Water samples for chlorophyll a measurements and dominant algal species determination were collected at the same time. The features of the spectral reflectance of the lake were discussed. The correlation between the spectral reflectance of single band and the content of chlorophyll a was low. The reflectance ratio of R 705nm / R 680nm and the reflectance first derivative of 690nm were found to be significantly correlated with the contents of chlorophyll a, and the r 2 gained using the reflectance ratio was higher than gained from the reflectance first derivative of 690nm's. |
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| Keywords: | Chaohu Lake chlorophyll a spectral reflectance remote sensing |
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