Chong Fang , et al. 卫星遥感揭示的全球藻类水华态势各异（1982-2018年）[Global Change Biology,2022]http://www.jlakes.org/ch/reader/view_news.aspx?id=20220328141451001

Abstract: Algal blooms (ABs) in inland lakes have caused adverse ecological effects, and health  impairment of animals and humans. We used archived Landsat images to examine ABs  in lakes (>1 km2 ) around the globe over a 37-year time span (1982–2018). Out of the  176032 lakes with area >1 km2  detected globally, 863 were impacted by ABs, 708 had  sufficiently long records to define a trend, and 66% exhibited 

increasing trends in frequency ratio (FRQR, ratio of the number of ABs events observed in a year in a given lake to the number of available 

Landsat images for that lake) or area ratio (AR, ratio of annual maximum area covered by ABs observed in a lake to the surface area of that 

lake), while 34% showed a decreasing trend. Across North America, an intensification of ABs  severity was observed for FRQR (p < .01) and AR (p < .01) before 1999, followed by a decrease in ABs FRQR (p < .01) and AR (p < .05) after the 2000s. The strongest intensification of ABs was observed in Asia, followed by South America, Africa, and Europe.   No clear trend was detected for the Oceania. Across climatic zones,the 

contributions of anthropogenic factors to ABs intensification (16.5% for fertilizer, 19.4% for gross domestic product, and 18.7% for 

population) were slightly stronger than climatic drivers (10.1% for temperature, 11.7% for wind speed, 16.8% for pressure, and for 11.6% 

for rainfall). Collectively, these divergent trends indicate that consideration of anthropogenic factors as well as climate change should be at the forefront of management policies aimed at reducing the severity and frequency of ABs in inland waters.

KEY WORDS: algal blooms, anthropogenic, climate, frequency ratio, Landsat