3种传统方法对不同珊瑚表面积测量的适用性及其校准方法——以3D扫描技术为基准*

doi:10.11978/2019039

Abstract

Abstract:

The surface area of scleractinian corals is an important reference parameter required for various researchs of coral biology and coral reef ecology. However, due to its complex morphological structure, the accurate measurement of coral surface area remains difficult. The diversity of measurement methods leads to the unreachable direct comparison of important indicators between different coral species. Thus, it is necessary to make a systematic comparison of different surface area measurement methods in different coral species. Regarding coral surface area measured by 3D scanning technique as standard, this study investigated the accuracy of three traditional measurement methods (wax coating, aluminium foil and simple geometry), discussed the applicability of different methods for corals in different morphology, and calibrated the accuracy of traditional measurement methods by simple regression analysis of two scleractinian corals Porites pukoensis (massive) and Pocillopora damicornis (branching). Results showed that the accuracy of simple geometry method was the highest (72.71% and 94.52%), followed by that of wax coating method (68.86% and 83.08%), and the accuracy of aluminium foil method is the lowest (65.27% and 58.07%) for P. pukoensis and P. damicornis, respectively. A strong correlation between 3D scanning method and each of the three traditional measurement methods (r²>0.95) was revealed by simple regression analysis, except for the surface area of P. pukoensis measured by the aluminium foil method (r²=0.762). Overall, to improve the accuracy of traditional coral surface area measurement methods, regression equations constructed by simple regression analysis can be used for calibration.

Key words: scleractinian coral, surface area measurement method, 3D scanning technique, simple regression analysis

CLC Number:

P735

LIANG Yuxian, YU Xiaolei, GUO Yajuan, HUANG Hui, ZHOU Weihua, YUAN Xiangcheng. Applicability and calibration methods of three traditional surface area measurement methods for different coral species — based on 3D scanning technology[J].Journal of Tropical Oceanography, 2020, 39(1): 85-93.

Figures/Tables 8

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References 35

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几何体	表面积公式
圆台	S=π(r2+Rl+rl)
圆柱	S=πr(r+2h)
三角形	S=ah/2
半球	S=2πr2
梯形	S=(a₁+a₂)h/2

方法	鹿角杯形珊瑚	普哥滨珊瑚
石蜡包埋法	83.08±11.28	68.86±8.19
锡箔纸包裹法	58.07±6.70	65.27±8.32
简单几何近似法	94.52±7.31	72.71±12.30

样品编号	3D扫描方法		石蜡包埋法		锡箔纸包裹法		简单几何近似法
样品编号	表面积/cm²	SD	表面积/cm²	SD	表面积/cm²	SD	表面积/cm²	SD
A1	37.59	0.84	38.68	6.43	55.42	2.73	37.07	0.49
A2	14.13	0.49	19.06	1.45	28.30	3.81	14.22	0.70
A3	11.46	0.08	14.83	2.57	20.74	3.96	11.26	0.78
A4	31.20	0.06	31.70	2.84	46.57	7.82	30.66	0.47
A5	8.95	0.09	13.49	1.28	18.28	3.54	8.65	0.37
B1	20.82	0.15	27.92	2.85	34.76	2.99	23.90	1.22
B2	19.94	0.09	36.46	3.56	37.09	3.67	14.69	0.74
B3	22.66	0.34	30.44	0.95	32.22	1.05	19.57	1.12
B4	14.46	0.29	20.66	1.18	19.45	1.83	10.28	0.25
B5	15.70	0.24	22.25	1.98	11.90	0.82	11.95	0.26

方法	每个样本的测量时间
方法	鹿角杯形珊瑚/min	普哥滨珊瑚/min
3D扫描方法	10~50	15~60
石蜡包埋法	15±2	15±2
锡箔纸包裹法	7~20	3~5
简单几何近似法	6~30	3~10

方法	原位测量	珊瑚整体水平测量	珊瑚礁群落水平测量	准确性	参考文献
投影面积	适用	适用	适用	低	Odum et al, 1955
锡箔纸包裹法	不适用	受限制	不适用	较高	Marsh et al, 1970
平面比例估算方法	适用	适用	适用	低	Dahl, 1973; Chancerelle, 2000, Courtney et al, 2007
乳胶包埋法	不适用	受限制	不适用	较高	Meyer et al, 1985
扫描法	不适用	受限制	不适用	高	Kaandorp et al, 2001
染料包埋法	不适用	适用	不适用	较高	Hoegh-Guldberg, 1988
石蜡包埋法	不适用	受限制	不适用	较高	Stimson et al, 1991
摄影测量技术	适用	受限制	不适用	受时间限制	Bythell et al, 2001
3D重构技术	适用	受限制	不适用	受时间限制	Cocito et al, 2003

Applicability and calibration methods of three traditional surface area measurement methods for different coral species — based on 3D scanning technology

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