三亚两种常见珊瑚健康与白化状态反射率特征分析  

Reflectance analysis of healthy and bleached common coral in Sanya

作　　者：陈标[1,2] 黄晖[1,3] 陈永强[1,3] 雷新明[1] 张诗泽[1,2] 周国伟[1,2] 

机构地区：[1]中国科学院热带海洋生物资源与生态重点实验室,广州510301 [2]中国科学院大学,北京100039 [3]中国科学院海南热带海洋生物重点实验站,三亚572000

出　　处：《生态科学》2014年第6期1080-1084,共5页Ecological Science

基　　金：国家科技支撑计划项目(2012BAC19B08);海洋公益性行业科研专项经费项目(201305030-3);国家青年基金项目(41306144;41406186)

摘　　要：对三亚海域常见风信子鹿角珊瑚(Acropora hyacinthus)和疣状杯形珊瑚(Pocillopora verrucosa)健康与白化状态的反射率进行分析。结果表明:健康状态下风信子鹿角珊瑚与疣状杯形珊瑚反射率波形相似,在575 nm、605 nm、650nm处均出现特征波峰;白化状态下风信子鹿角珊瑚与疣状杯形珊瑚反射率高于健康状态珊瑚反射率,波形较平缓,其中白化风信子鹿角珊瑚反射率在675 nm处出现显著波谷,为叶绿素对光吸收导致。大型多元统计软件PRIMER 6对健康与白化状态珊瑚反射率进行Bray-Curtis相似聚类(CLUSTER)分析,显示在80%相似水平上可以对健康与白化状态珊瑚反射率进行区分。一阶导数表明,风信子鹿角珊瑚敏感波段为490 nm—570 nm,疣状杯形珊瑚敏感波段为550 nm—575 nm,不同种类珊瑚敏感波段具有差异性。The reflectance analysis of healthy and bleached common corals m Sanya which are Acropora nyacmtnus ann Pocillopora verrucosa, indicated that reflectance of waveforms of healthy A. hyacinthus and P. verrucosa is similar, which exhibits positive reflectance features at 570 nm, 600 nm and 650 nm. Bleached A. hyacinthus and bleached P verrucosa reflectance is obviously higher than the healthy coral without positive reflectance features. The reflectance features of A. hyacinthus showed a valley at 675 nm due to chlorophyll. The differential analysis of healthy and bleached coral reflectance using PRIMER6 software packages clustering, healthy coral reflectance and bleached coral reflectance can be distinguished at the level of 80% Bray-Curits similarity. Based on reflectance first derivatives analysis, the reflectance regions between 490 nm and 570 nm provide good identification of healthy and bleached A. hyacinthus, those between 550 nm and 575 nm provide good identification of healthy and bleached P. verrucosa.

关 键 词：三亚 珊瑚 健康与白化 反射率 

分 类 号：Q959.135.4[生物学—动物学]