QQ客服 官方微博 反馈留言

	Moderate Resolution Imaging Spectroradiometer (MODIS) observations of cyanobacteria blooms in Taihu Lake, China
	Hu, Chuanmin（Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA） ; Lee, Zhongping（Mississippi State Univ, No Gulf Inst, Stennis Space Ctr, MS 39529 USA） ; Ma, Ronghua（Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China） ; Yu, Kun（ Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA） ; Li, Daqiu（ Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA） ; Shang, Shaoling ; Shang SL(商少凌)
	2010-04-01
英文摘要	A novel approach was used with data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to characterize the intense blooms of cyanobacteria (primarily Microcystis aeruginosa) in Taihu Lake, China's third largest freshwater lake. The approach involves first deriving a floating algae index (FAI) based on the medium-resolution (250 and 500 m) MODIS reflectance data at 645, 859, and 1240 nm after correction of the ozone/gaseous absorption and Rayleigh scattering effects and then objectively determining the FAI threshold value (-0.004) to separate the bloom and nonbloom waters. By definition, the term "bloom" or "floating algae" refers to bloom where cyanobacteria form floating scums on the water surface. The 9 year MODIS time series data showed bloom characteristics (annual occurrence frequency, timing, and duration) between 2000 and 2008. Assuming 25% area coverage as a gauge for significance, significant bloom events rarely occurred between 2000 and 2004 for the entire lake (excluding East Bay) or several lake segments (Northwest Lake, Southwest Lake, and Central Lake). In most lake segments, the annual frequency of significant blooms increased from 2000-2004 to 2006-2008, when they started earlier and had a longer duration. The year 2007 showed unique bloom characteristics due to conditions highly favorable for bloom development and proliferation. The results suggest that the long-term bloom patterns are driven by both nutrients and climatic factors. The multiyear series of consistent MODIS FAI data products provide baseline information to monitor the lake's bloom condition, one of the critical water quality indicators, on a weekly basis, as well as to evaluate its future water quality trends.; U.S. NASA [NNX09AE17G, NNX09AV56G]; NOAA [NA06NES4400004]; National Natural Science Foundation of China [40871168]; Ministry of Education of China [B07034]
语种	英语
出版者	AMER GEOPHYSICAL UNION
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1029/2009JC005511]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Hu, Chuanmin,Lee, Zhongping,Ma, Ronghua,et al. Moderate Resolution Imaging Spectroradiometer (MODIS) observations of cyanobacteria blooms in Taihu Lake, China[J],2010.
APA	Hu, Chuanmin.,Lee, Zhongping.,Ma, Ronghua.,Yu, Kun.,Li, Daqiu.,...&商少凌.(2010).Moderate Resolution Imaging Spectroradiometer (MODIS) observations of cyanobacteria blooms in Taihu Lake, China..
MLA	Hu, Chuanmin,et al."Moderate Resolution Imaging Spectroradiometer (MODIS) observations of cyanobacteria blooms in Taihu Lake, China".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。