| 基于卫星影像的太湖蓝藻水华遥感强度指数和等级划分算法设计 |
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| 引用本文： | 李旭文,牛志春,姜晟,金焰.基于卫星影像的太湖蓝藻水华遥感强度指数和等级划分算法设计[J].环境监测管理与技术,2011,23(5):23-30. |
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| 作者姓名： | 李旭文 牛志春 姜晟 金焰 |
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| 作者单位： | 江苏省环境监测中心; |
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| 基金项目： | 国家水环境监测技术体系研究与示范(2009ZX07527-006); 国家科技支撑计划“基于环境一号等国产卫星的环境遥感监测应用技术集成与示范研究”(2008BAC34B07-01) |
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| 摘 要： | 对太湖地区近10余年来共32景Landsat TM/ETM遥感影像进行大气校正处理,获得地表反射率影像,在这些影像上采集了分布在不同片区、不同发生季节、不同集聚程度的蓝藻水华样区,提取了不同蓝藻水华的可见一近红外波段反射率数据.统计表明蓝藻水华在TM 4波段的反射率有较宽的动态范围,能定量反映蓝藻集聚程度,TM 2也是...
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| 关 键 词： | 卫星遥感 蓝藻水华强度(CBI) 陆地卫星 大气校正 太湖 |
Design of Intensity Index and Build-up Degree Classification Algorithm Development for Cyanobacterica Blooms in Lake Taihu Based on Satellite Remote Sensing |
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| LI Xu-wen.Design of Intensity Index and Build-up Degree Classification Algorithm Development for Cyanobacterica Blooms in Lake Taihu Based on Satellite Remote Sensing[J].The Administration and Technique of Environmental Monitoring,2011,23(5):23-30. |
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| Authors: | LI Xu-wen |
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| Institution: | LI Xu-wen,NIU Zhi-chun,JIANG Sheng,JIN Yan(Jiangsu Provincial Environmental Monitoring Center,Nanjing,Jiangsu 210036,China) |
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| Abstract: | 32 Landsat TM/ETM scenes of Lake Taihu spanning the past 10 years were atmospherically corrected to generate surface reflectance images,then region-of-interest(ROIs) were overlaid on cyanobacteria blooms which occurred at various locations on those images,the visible and NIR spectral reflectance means and other statistics information were collected and examined.It was shown TM band 4 spectral reflectance of cyanobacteria blooms usually have wide value range and can be used to quantitatively monitor the buil... |
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| Keywords: | Satellite remote sensing Cyanobacteria bloom intensity Landsat Atmospheric correction Taihu |
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