珠江口水域水污染遥感定量分析  

Quantitative Analysis on Water Pollution in the Pearl River Estuary by Remote Sensing Method

作　　者：邓孺孺[1] 何执兼[1] 陈晓翔[1] 关履基[1] 柯栋[1] 

机构地区：[1]中山大学遥感中心,广东广州510275

出　　处：《中山大学学报（自然科学版）》2002年第3期99-103,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省重点项目子课题"广东省海岸带遥感调查"资助项目 (70 7- 42 2 - 19) ;广东省自然科学基金资助项目 (0 70 - 41316 )

摘　　要：卫星遥感技术在水污染监测方面具有广阔的应用前景。在经大气校正后 ,可见光波段卫星遥感数据的水体象元主要受水中污染物、泥沙及叶绿素等的影响。研究污染水体反射光谱成像的物理过程 ,在水深较大(>2m)的假设下 ,建立了叶绿不敏感波段遥感数据象元反射率与污染物浓度的函数关系 ,并用多波段数据进行求解。然后采用 2 0 0 2年TM卫星数据 ,用该方法对珠江口海域的综合汛浓度进行了定量提取并用实测数据加以验证。结果显示 ,珠江口水域重污染区主要分布在伶仃洋东北部 ,香港维多利亚港和深圳湾。Satellite remote sensing has a wide foreground of application in the survey and monitoing of water environment.After atmospheric correcting, water pixels of satellite remote sensing data of optic spectrum are mainly influenced by pollutants,soil and sand,and chlorophyll in the water.From studying the imaging course of polluted water in reflected spectrum,and under the hypothesis that the depth of water is very large(>2 m),the function between pixel reflectance and the densities of synthetical pollutants and soil and sand in the water is deduced and solved with multi_spectral remote sesing data.Then, using this method, synthetical pollutant concentration of seawater over the waters of Pearl River Estuary are derived from TM remote sensing data in 2002, and verified by field data. The result showed that the heavily polluted water area of Pearl River Estuary is mainly distributed in the northeast part of the estuary, Victoria Harbor of Hong Kong, and Shengzhen Bay.

关 键 词：珠江口水域 水污染 遥感 定量分析 信息提取 环境监测 污染浓度 水体反射光谱 

分 类 号：X832[环境科学与工程—环境工程] X87