基于高分辨率卫星图像和原位数据的越南张沙群岛大龙礁底栖生物栖息地制图和海草物种多样性评估

IF 2.4 Q2 GEOSCIENCES, MULTIDISCIPLINARY
Hoi Dang Nguyen, Dung Trung Ngo, Dung Viet Vu
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引用次数: 0

摘要

底栖生物栖息地在浅海地区至关重要;它们调节着每个地区生物的多样性和丰富性。绘制底栖生物栖息地图阐明了海洋的自然特征,有助于管理和利用自然资源,以及保护海洋生物多样性。本研究利用pl高分辨率遥感影像资料和2020年和2021年的野外调查结果,建立了越南张沙群岛大龙礁地区的底栖生物栖息地地图。我们确定了7类底栖动物栖息地,总体精度为91.64%,Kappa系数为0.88。在大龙礁,海草生物群落占地面积较大(超过200公顷),主要分布在水深2-6 m的泻湖内。野外调查结果确定了大龙礁泻湖海草的5种种类和种群的生物多样性和生物量。研究结果证实了资源,生物多样性,特别是海草,在管理和保护越南张沙群岛重要组成部分大龙礁地区的浅海生态系统和生物多样性保护方面的基本价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Benthic habitat mapping and assessment of seagrass species diversity in Da Lon Reef, Truong Sa Islands, Vietnam, using very high-resolution satellite imagery and in situ data
Benthic habitats are critical in shallow sea areas; they regulate the diversity and richness of organisms in each area. Mapping benthic habitats elucidates natural sea characteristics and aids in managing and using natural resources, as well as conserving marine biodiversity. This study established a benthic habitat map for the Da Lon Reef area, Truong Sa Islands, Vietnam, using Pléiades high-resolution remote sensing imaging materials and field survey results from 2020 and 2021. We identified seven classes of benthic habitats with a 91.64% overall accuracy, corresponding to a Kappa coefficient of 0.88. In the Da Lon Reef, seagrass biomes occupy a large area (more than 200 ha) and are distributed mainly inside lagoons at depths of 2–6 m. The field survey results identified five seagrass species and the biodiversity and biomass of seagrass populations in the lagoon of Da Lon Reef. The study results confirm the fundamental value of resources, biodiversity in general and seagrass in particular, in managing and protecting shallow sea ecosystems and biodiversity conservation in the Da Lon Reef area, an important part of the Truong Sa Islands, Vietnam.
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来源期刊
VIETNAM JOURNAL OF EARTH SCIENCES
VIETNAM JOURNAL OF EARTH SCIENCES GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
20.00%
发文量
0
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