南海三亚湾鹿回头海域风信子鹿角珊瑚反射率分析

doi:10.11978/j.issn.1009-5470.2015.01.010

Abstract

Abstract: An application of remote sensing in monitoring and management of coral was developed with reflectance identification of coral substrate. Some foreign scholars have discriminated reflectance of coral substrate, while the reflectance of different coral substrate discrimination in the South China Sea did not exist. This study explored reflectance of Acropora hyacinthus at Luhuitou Sanya using spectrum instrument. Healthy Acropora hyacinthus exhibited positive reflectance features at 570, 600 and 650 nm. Reflectance by dead Acropora hyacinthus was obviously higher than that by healthy Acropora hyacinthus, and did not jave positive reflectance features. The differential analysis of coral substrate reflectance use PRIMER6 software packages Clustering. Healthy Acropora hyacinthus reflectance, dead Acropora hyacinthus reflectance and sand reflectance can be distinguished at the level of 80% Bray-Curits similarity. Based on reflectance derivative analysis, the first derivative of reflectance between 490 and 560 nm provided good identification of healthy and dead Acropora hyacinthus.

Key words: Sanya, Acropora hyacinthus, reflectance analysis

CHEN Biao^{1, 2}, CHEN Yong-qiang^{1, 3}, HUANG Hui^{1, 3}, XIE Qiang^{4, 5}, JIANG Yu-feng^{1, 2}, LEI Xin-ming¹, JIANG Lei^{1, 2}, ZHANG Shi-ze^{1, 2}, ZHOU Guo-wei^{1, 3}. Analysis of reflectance by Acropora hyacinthus in Luhuitou, Sanya of the South China Sea[J].Journal of Tropical Oceanography, 2015, 34(1): 71-76.

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Analysis of reflectance by Acropora hyacinthus in Luhuitou, Sanya of the South China Sea

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