站内搜索:   
综合新闻
科研成果
科研项目
研究进展
学科热点
通知公告
科普专栏
 
 
 
    科研信息  
 
全球遥感大数据揭示过去十年间全球湖泊水华加剧
新闻类别:科研信息   发布时间:2022-04-29
 
作者:Xuejiao Hou; Lian Feng; Yanhui Dai;

Algal blooms constitute an emerging threat to global inland water quality, yet their spatial and temporal distribution at the global scale remains largely unknown. Here we establish a global bloom database, using 2.91?million Landsat satellite images from 1982 to 2019 to characterize algal blooms in 248,243 freshwater lakes, representing 57.1% of the global lake area. We show that 21,878 lakes (8.8%) spread across six continents have experienced algal blooms. The median bloom occurrence of affected lakes was 4.6%, but this frequency is increasing; we found increased bloom risks in the 2010s, globally (except for Oceania). The most pronounced increases were found in Asia and Africa, mostly in developing countries that remain reliant on agricultural fertilizer. As algal blooms continue to expand in scale and magnitude, this baseline census will be vital towards future risk assessments and mitigation efforts.

来源:Nature Geoscience:15 出版年: 2022, DOI: 10.1038/s41561-021-00887-x

 

附件
 
   webmaster@skllse.ac.cn 版权所有 © 2009 中国科学院南京地理与湖泊研究所 湖泊与环境国家重点实验室
地址:南京市玄武区北京东路73号 邮编:210008
电话:025-86882189 传真:025-86882189