苏州运河水质的TM分析  

WATER QUALITY MAPPING FROM LANDSAT THEMATIC MAPPER DATA

作　　者：李旭文[1] 季耿善[1] 杨静[1] 

机构地区：[1]江苏省环境科学研究所

出　　处：《环境遥感》1993年第1期36-44,81,共9页

摘　　要：本文利用苏州地区陆地卫星TM数据和同期的地面水质监测资料建立了TM图像遥感水质模型,并将该模型应用于TM可见光彩色合成图像的分割处理,得到苏州地区水质空间分布图像。结合苏州运河水网的水文及水污染特征对遥感水质空间分布图像作了分析。结果表明TM数据真实地反映了苏州地区水质的空间分布规律,并得到当地环境监测部门的验证。The object of this study was to use remotely sensed LANDSAT Thematic Mapper data, combined with the concurrent in situ water quality data, for the assessment and mapping of water pollution level in the area of Suzhou, .Jiangsu Province. The water quality parameters of interest included: (1) Dissolved oxygen (DO); (2) Biochemical oxygen demand (BOD); (3) Chemical oxygen demand (COD); and (4) Organic pollution index A. Based on the statistical analysis of the relationship between TM digital values and the water quality parameters of 9 sampling sites on the Southern Grand Canal, a series of regression models were developed and examined for validity. The most effective model was chosen and extended to the entire study area to map the water quality with signature from the 3 Thematic Mapper visible bands. The spatial distribution of water quality information in this study area was color-coded via digital image processing techniques and successfully verified by the local environmental monitoring station.

关 键 词：TM 水质 环境监测 苏州 运河 

分 类 号：X52[环境科学与工程—环境工程]