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首页> 外文会议>IEEE International Geoscience and Remote Sensing Symposium >Mapping of chlorophyll-a concentration of reservoir Dajingshan, Zhuhai, China, from LandSat thematic mapper
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Mapping of chlorophyll-a concentration of reservoir Dajingshan, Zhuhai, China, from LandSat thematic mapper

机译：叶绿素 - 中国珠海，珠海，珠海，珠海山坡浓度的映射

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摘要

Chlorophyll a (Chl-a) is an indicator of water quality, especially of eutrophic state. Remote sensing has been used to mapping Chl-a in lake, large river, estuary and ocean, due to its advantages such as to provide data logistically and economically. The aim of this paper was to use LandSat TM image and suitable algorithm to estimate and map Chl-a concentration in reservoir Dajingshan, an important source for drinking water supply in Zhuhai city, China. After comparing several simple linear regression algorithms, a most suitable algorithm using brightness value of bands 1 to 4, was adopted. The results showed that the modeled chl-a concentration in November 23th, 2005 had reasonable accuracy, with a mean absolute error of 0.002 mg/L when compared with the ground truth measurements. The chl-a concetration map showed that the reservior Dajingshan was in eutrophic conditions and the water could not be used as drinking water.
机译：叶绿素A（CHL-A）是水质的指标，尤其是富营养化状态。由于其优点，以便在逻辑学和经济上提供数据，遥感已经用于在湖泊，大河，河口和海洋中映射CHL-A。本文的目的是使用Landsat TM图像和合适的算法来估计和地图水库中的CHL-A浓度，是珠海市珠海市饮用水的重要来源。在比较几个简单的线性回归算法之后，采用了使用带1至4的亮度值的最合适的算法。结果表明，11月23日的模型CHL-A浓度 th ，2005具有合理的精度，与地面真相测量相比，平均绝对误差为0.002 mg / l。 CHL-A常时图表明，Dajingshan在富营养化的条件下，水不能用作饮用水。

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