The seasonal dissipation of Ulva prolifera and its effects on environmental factors: based on remote sensing images and field monitoring data

Ulva prolifera blooms have occurred every summer in the South Yellow Sea since 2008. U. prolifera blooms appeared in the area near the Jiangsu shoal and then were driven to the Shandong Peninsula by the prevailing summer winds. The blooms covered a maximum area of more than 50000 km 2 and had an agg...

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Bibliographic Details
Published in:Geocarto international 2022-02, Vol.37 (3), p.860-878
Main Authors: Zhang, Guangzong, Wu, Mengquan, Zhou, Min, Zhao, Lianjie
Format: Article
Language:English
Subjects:
chlorophyll-a concentration
GF-1
multiple regression analysis
Southern Yellow Sea
the dissipation stage of Ulva prolifera
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Summary:Ulva prolifera blooms have occurred every summer in the South Yellow Sea since 2008. U. prolifera blooms appeared in the area near the Jiangsu shoal and then were driven to the Shandong Peninsula by the prevailing summer winds. The blooms covered a maximum area of more than 50000 km 2 and had an aggregate estimated biomass of 3.64 × 10 5 tons. Large number of U. prolifera dissipation in the natural degradation and this cause a serious impact on the marine environment. We used MODIS, HJ-1A/B and GF-1 remote sensing image data to conduct large-scale monitoring of U. prolifera. Combined with sea surface monitoring station data from Haiyang city, Shandong province, we analyzed the impact of U. prolifera death on the coastal sea environment of Haiyang city from 2012 to 2016 using multiple regression analysis. It showed that chlorophyll-a concentration was related to sea surface temperature (SST), salinity, dissolved inorganic nitrogen (DIN) and phosphate (R 2  = 0.50, P 
ISSN:1010-6049
1752-0762
DOI:10.1080/10106049.2020.1745301