我国蓝藻水华遥感监测研究进展
摘要近年来,蓝藻水华频繁暴发,成为备受关注的环境问题。遥感技术具有快速、大范围、动态的特点,在蓝藻水华监测中广泛应用。在总结我国蓝藻水华遥感监测研究成果的基础上,对现有研究中的数据源、研究方向进行了分析,对未来发展方向提出展望。
关键词蓝藻水华;遥感监测;原理;数据源;研究方向;展望
ReviewonRemoteSensingMonitoringofCyanobacteriaBloominChina
XIONG Chun-ni 1TIAN Xiao-feng 2TANG Ai-yi 3WEI Hong-hui 1
(1 Guangzhou Environment Monitoring Centre in Guangdong Province,Guangzhou Guangdong 510030; 2 Guangzhou Guangya Experimental Middle School; 3 Guangzhou Peiying Middle School)
AbstractCyanobacteria bloom occurred frequenctly in recent years and became one offocal points of environmental problems. Remote sensing monitoring was quick,abroad-area,dynamic monitoring technology,and was used widely in cyanobacteria bloom monitoring. Based on the study results of remote sensing monitoring of cyanobacteria bloom,the remote sensing data used in current researches and research direction were reviewed,and the future development tendency was proposed.
Key wordscyanobacteria bloom;remote sensing monitoring;principle;data source;research interests;prospect
湖泊富营养化是全世界面临的水环境问题,我国尤其严重。据统计,我国66%以上的湖泊和水库已处于富营养化的水平,其中22%属于重富营养和超富营养[1]。水华是富营养化湖泊的常见现象。在一定的温度、光照、风速条件下,水体中的藻类暴发性生长,聚集在水体表面,形成水华。水华不但破坏景观,释放有异味的物质,而且大量消耗水中的氧气,某些藻类还会产生藻毒素,严重影响水生生物生存,破坏水生生态平衡,威胁水质安全。
传统监测方法是在湖库布点、采样,然后进行实验室分析,耗时费力,对于大面积的水域往往难于快速全面地监测蓝藻水华的分布和变化。相比之下,遥感监测具有快速、范围大、动态的特点,已经成为蓝藻水华监测的重要方法。近年来,我国学者对蓝藻水华遥感监测的理论及实践应用作了许多探索,也取得了一些成果
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