What causes the great green tide disaster in the South Yellow Sea of China in 2021?. (July 2022)
- Record Type:
- Journal Article
- Title:
- What causes the great green tide disaster in the South Yellow Sea of China in 2021?. (July 2022)
- Main Title:
- What causes the great green tide disaster in the South Yellow Sea of China in 2021?
- Authors:
- Zheng, Longxiao
Wu, Mengquan
Cui, Yating
Tian, Li
Yang, Pengsen
Zhao, Lianjie
Xue, Mingyue
Liu, Jiayan - Abstract:
- Highlights: The great green tide in 2021 is extracted by NDVI and GEE. 2021 green tide reaches largest scale in history. Early recycling of P. yezoensis rafts provided more floating seed for green tide. SST was higher in June and July in the SYS, which was favorable for green tide. The lower PAR in August is conducive to reduce the effect of photoinhibition. Abstract: The largest green tide in the South Yellow Sea (SYS) of China broke out in 2021 since the first outbreak in 2007. What causes the great outbreak has caused widespread concern. In this study, we monitor the green tide in the SYS in 2021 using Normalized Difference Vegetation Index and Google Earth Engine and then identify the main controlling factors from environmental change and human activity. In terms of human activity, Pyropia yezoensis ( P. yezoensis ) cultivation in Northern Jiangsu shoal of China has an impact on the scale of green tide. Compared with the same period in previous years, the early recycling of P. yezoensis cultivation rafts in 2021 provided more floating seed for green tide. The human activity intensity index in coastal cities in Jiangsu and Shandong provinces of China has been increasing for the past nine years, leading to large amounts of nutrients being released into seawater, providing green tide with the nutrients needed for growth. From the perspective of environmental changes, the sea surface temperature was higher in June and July in the SYS, which was favorable for green tideHighlights: The great green tide in 2021 is extracted by NDVI and GEE. 2021 green tide reaches largest scale in history. Early recycling of P. yezoensis rafts provided more floating seed for green tide. SST was higher in June and July in the SYS, which was favorable for green tide. The lower PAR in August is conducive to reduce the effect of photoinhibition. Abstract: The largest green tide in the South Yellow Sea (SYS) of China broke out in 2021 since the first outbreak in 2007. What causes the great outbreak has caused widespread concern. In this study, we monitor the green tide in the SYS in 2021 using Normalized Difference Vegetation Index and Google Earth Engine and then identify the main controlling factors from environmental change and human activity. In terms of human activity, Pyropia yezoensis ( P. yezoensis ) cultivation in Northern Jiangsu shoal of China has an impact on the scale of green tide. Compared with the same period in previous years, the early recycling of P. yezoensis cultivation rafts in 2021 provided more floating seed for green tide. The human activity intensity index in coastal cities in Jiangsu and Shandong provinces of China has been increasing for the past nine years, leading to large amounts of nutrients being released into seawater, providing green tide with the nutrients needed for growth. From the perspective of environmental changes, the sea surface temperature was higher in June and July in the SYS, which was favorable for green tide growth. The abundant solar radiation in May and July is conducive to photosynthesis of Ulva prolifera. The lower photosynthetically active radiation in August is conducive to reduce the effect of photoinhibition and promote algal growth. These findings are useful for further understanding the rules of green tide outbreaks and controlling green tide disasters. … (more)
- Is Part Of:
- Ecological indicators. Volume 140(2022)
- Journal:
- Ecological indicators
- Issue:
- Volume 140(2022)
- Issue Display:
- Volume 140, Issue 2022 (2022)
- Year:
- 2022
- Volume:
- 140
- Issue:
- 2022
- Issue Sort Value:
- 2022-0140-2022-0000
- Page Start:
- Page End:
- Publication Date:
- 2022-07
- Subjects:
- Green tide -- Google Earth Engine -- Normalized Difference Vegetation Index -- Remote sensing -- South Yellow Sea of China -- Human activity intensity index
Environmental monitoring -- Periodicals
Environmental management -- Periodicals
Environmental impact analysis -- Periodicals
Environmental risk assessment -- Periodicals
Sustainable development -- Periodicals
333.71405 - Journal URLs:
- http://www.sciencedirect.com/science/journal/1470160X/ ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.ecolind.2022.108988 ↗
- Languages:
- English
- ISSNs:
- 1470-160X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3648.877200
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 22332.xml