Evaluation of the Pacific oyster marine aquaculture suitability in Shandong, China based on GIS and remote sensing

Chunlin Li; Yang Liu; Zixu Yin; Zhangqi Si; Qi Li; Sei-Ichi Saitoh

doi:10.3389/fmars.2024.1402528

Frontiers in Marine Science (Jun 2024)

Evaluation of the Pacific oyster marine aquaculture suitability in Shandong, China based on GIS and remote sensing

Chunlin Li,
Yang Liu,
Zixu Yin,
Zhangqi Si,
Qi Li,
Sei-Ichi Saitoh

Affiliations

Chunlin Li: Deep Sea and Polar Fisheries Research Center, Ocean University of China, Qingdao, China
Yang Liu: Deep Sea and Polar Fisheries Research Center, Ocean University of China, Qingdao, China
Zixu Yin: Deep Sea and Polar Fisheries Research Center, Ocean University of China, Qingdao, China
Zhangqi Si: Deep Sea and Polar Fisheries Research Center, Ocean University of China, Qingdao, China
Qi Li: Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, China
Sei-Ichi Saitoh: Arctic Research Center, Hokkaido University, Sapporo, Japan

DOI: https://doi.org/10.3389/fmars.2024.1402528
Journal volume & issue: Vol. 11

Abstract

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The Pacific oyster (Crassostrea gigas) is a marine aquaculture species with rapid production growth in recent years. China accounts for nearly 90% of global production by 2021, especially in Shandong province. Evaluating suitability is crucial for ensuring the sustainable growth of Pacific oyster marine aquaculture and achieving a blue transition. This study developed a suitability evaluation model for Pacific oyster marine aquaculture using a Geographic Information System (GIS), Maximum Entropy (MaxEnt) model, remote sensing, and reanalysis data. A literature review and Analytic Hierarchy Process (AHP) were used to establish an evaluation model encompassing water quality, hydrology, climate and meteorology, and socioeconomic factors. The results showed that within a 20 km range of the Shandong coast, 49% of the area was highly suitable, 51% was moderately suitable, and the overall annual high score proportion (HSP) fluctuated around 50%, with higher suitability observed in the spring and autumn. The inner bays of the coastal areas (Laizhou, Rongcheng, Jimo) exhibited high suitability (HSP over 80%); in contrast, the offshore areas (Changdao, Rushan) farther from the coast had lower suitability and showed significant monthly variations. The result was consistent with the spatial distribution and temporal variation of Shandong’s existing Pacific oyster marine aquaculture areas. The study also found that El Niño significantly impacts Rongcheng, Rushan, and Jimo during summer. We predicted an overall increase of suitability in the Shandong offshore areas under future climate change scenarios, with a more significant increase of suitability in the north. El Niño-Southern Oscillation (ENSO) influenced the concentration of parameters such as chlorophyll-a (Chl-a) and total suspended sediment (TSS) in the coastal waters through its impact on precipitation (Pr), resulting in suitability fluctuations.

Published in Frontiers in Marine Science

ISSN: 2296-7745 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Natural history (General): General. Including nature conservation, geographical distribution
Website: https://www.frontiersin.org/journals/marine-science

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