Spatiotemporal distribution and influencing factors of Ulva prolifera and Sargassum and their coexistence in the South Yellow Sea,China  

作　　者：Longxiao ZHENG Mengquan WU Min ZHOU Lianjie ZHAO 

机构地区：[1]College of Resources and Environmental Engineering,Ludong University,Yantai 264039,China

出　　处：《Journal of Oceanology and Limnology》2022年第3期1070-1084,共15页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(No.42071385);the Natural Science Foundation of Shandong Province,China(No.ZR2019MD041)。

摘　　要：Marine ecological disasters occurred frequently in recent years and raised widespread concerns about the ecological health of the ocean.We analyzed the spatiotemporal distributions of Ulva prolifera and Sargassum from April to July each year between 2016 and 2020 in the South Yellow Sea using multisource(GF-1 and HJ-1A/1B)remote sensing images,combined with the MODIS sea surface temperature(SST)data,photosynthetically active radiation(PAR)data,and Quick SCAT sea surface wind(SSW)data,to explore the potential influencing factors.The results show that(1)U.prolifera and Sargassum appeared mainly from May to July and April to June,respectively;(2)U.prolifera showed an impact in larger spatial scope than that of Sargassum.U.prolifera originated in the shoal area of northern Jiangsu and finally disappeared in the sea near Haiyang-Rongcheng area.The spatial scope of the impact of Sargassum tended to expand.Sargassum was first detected in the ocean northeast of the Changjiang(Yangtze)River estuary and disappeared near 35°N;and(3)correlation analysis showed that the SST influenced the growth rate of U.prolifera and Sargassum.PAR had varied eff ects on U.prolifera and Sargassum at different times.A moderate light conditions could accelerate the growth and reproduction of U.prolifera and Sargassum.High irradiance levels of ultraviolet radiation may cause photoinhibition and damage on U.prolifera and Sargassum.The southeast monsoon and surface currents promoted the drift of U.prolifera and Sargassum from the southeast to the northwest and north.Therefore,the spatial and temporal similarities and differences between U.prolifera and Sargassum were influenced by a combination of factors during their growth processes.

关 键 词：Ulva prolifera SARGASSUM virtual-baseline floating macro algae height(VB-FAH) spatiotemporal distribution South Yellow Sea multi-source remote sensing 

分 类 号：X55[环境科学与工程—环境工程]