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| 三亚鹿回头海域珊瑚、团扇藻和砂反射率光谱分析 | |
| 作者单位： | 1. 中国科学院热带海洋生物资源与生态重点实验室(LMB)，广东 广州 510301 2. 中国科学院海南热带海洋生物重点实验站，海南 三亚 572000 3. 济宁市第一人民医院医学真菌实验室，山东 济宁 272111 4. 中国科学院三亚深海科学与工程研究所, 海南 三亚 572000 |
| 基金项目： | 中国国家留学基金项目（201704910155），国家自然科学基金青年基金项目(41306144，41406186)，国家海洋局近岸海域生态环境重点实验室开放基金项目（201807）资助 |
| 摘 要： | 以海南三亚湾鹿回头附近海域常见的8种优势造礁石珊瑚的反射率光谱代表该海域珊瑚的反射率光谱，用光纤光谱仪测量它们和此海域常见底质团扇藻、砂的反射率光谱。利用反射率、导数光谱法分析研究了该海域造礁石珊瑚、团扇藻和砂反射率光谱的差异。分析表明500～ 700 nm和珊瑚反射率差异相对较大；珊瑚反射率光谱明显低于砂反射率光谱，反射率谱线整体差异显著。导数分析结果显示造礁石珊瑚、团扇藻和砂的可区分波段为：石珊瑚与团扇藻的一阶导数，主要为415.1～425.6，482～487，514.5～529，577～587.6和631.9～644 nm等波段。二阶导数主要为，413～418.7，427.4～432.5，462.3～470.6，494.4～503.6，551.6～561.4，590～594和639～643 nm波段。四阶导数主要为，412.2～418.4，420.5～425.3，470.9～480.2，481.3～486.9，540.8～545.7，560～568.3和635.6～639.6 nm等波段。石珊瑚与砂的一阶导数，主要为400～413.7，514.5～529.6，576.9～587.6和602.7～667 nm波段。二阶导数主要为，420.5～430.7，446.9～458.8，467.3～472.3，537～544.3，556.8～561.4，582.8～587.2和637.6～649.4 nm。四阶导数主要为，414.4～418.7，419.5～430.3，486.9～495.8，534.2～540.1，579～583.1，622.7～627.5，640～645和665.4～672.8 nm等波段。 |
| 关 键 词： | 三亚湾鹿回头 珊瑚 团扇藻 砂 反射率光谱 |
| 收稿时间： | 2017-11-09 |
Reflectance Analysis of Coral,Padina Pavonica and Coral Sand at Luhuitou of Sanya Bay |
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| Authors: | CHEN Yong-qiang CHEN Biao LEI Xin-ming XIE Qiang HUANG Hui |
| Institution: | 1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301 2. National Experiment Station of Tropical Marine Biology, Sanya 572000, China 3. The Laboratory of Medical Mycology Jining No.1 People’s Hospital, Ji’ning 272111, China 4. Sanya Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China |
| Abstract: | Reflectance spectra of eight common scleractinian coral species were chosed to represent the reflectance of corals in the sea area of Luhuitou, Sanya Bay in the north-western South China Sea (SCS). Reflectance spectra of these scleractinian corals, Padina Pavonicaand coral sand were measured using a fiber spectrometer. Then spectral reflectance analysis and derivative spectroscopy were used to study the diference of the reflectance spectrum of reef building scleractinian coral, Padina Pavonica and coral sand in this sea area. The results showed that reflectance difference of Padina Pavonica and scleractinian coral is very significant in 500～700 nm; reflectance of coral sand is significantly higher than that of coral reflectance spectrum with significant differences. Derivative analysis results showed that the distinguishable bands of scleractinian coral, Padina Pavonica and coral sand are as follows: scleractinian coral and Padina Pavonica, first order derivatives are mainly in 415.1～425.6，482～487，514.5～529，577～587.6 and 631.9～644 nm bands. The second order derivatives are mainly in 413～418.7，427.4～432.5，462.3～470.6，494.4～503.6，551.6～561.4，590～594 and 639～643 nm bands. The fourth order derivatives are mainly in 412.2～418.4，420.5～425.3，470.9～480.2，481.3～486.9，540.8～545.7，560～568.3 and 635.6～639.6 nm bands. First order derivatives of scleractinian coral and coral sand are mainly in 400～413.7，514.5～529.6，576.9～587.6 and 602.7～667 nm bands. The second order derivatives are mainly in 420.5～430.7，446.9～458.8，467.3～472.3，537～544.3，556.8～561.4，582.8～587.2 and 637.6～649.4 nm. The fourth order derivatives are mainly in 414.4～418.7，419.5～430.3，486.9～495.8，534.2～540.1，579～583.1，622.7～627.5，640～645 and 665.4～672.8 nm bands. |
| Keywords: | Lu Huitou Sanya Bay Coral Padina Pavonica Coral sand Reflectance Spectrum |
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