学术
摘 要:
利用太湖水域MODIS遥感数据的各波段反射率组合计算值,与实测的叶绿素a浓度进行相关性分析,找到相关性最好的反射率组合,建立反演太湖叶绿素a浓度的遥感模型。结果表明,利用MODIS数据可以较好地实现对太湖水域叶绿素a浓度的定量反演计算,并以MODIS数据第3、第17波段的反射率组合作为遥感指数建立了反演叶绿素a浓度的模型。第3、第17波段的波长范围分别为459nm～479nm、890nm～920nm,这一波段选择与以往使用TM数据得到的结论有所不同。[著者文摘]
文章出处:
《环境科学与管理》-2007年32卷6期 -25-29页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1673-1212（2007）06-0025-05
相关文章:
Study on Retrieval of Chlorophyll -a Concentration by Remote Sensing in Taihu Lake
Gu Liang,Zhang Yuchao, Qian Xin, Qian Yu （State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China）
Abstract:
Using MODIS remote sensing data in Taihu Lake, calculate the indices of reflectivity in different wave band combination, and compared with chlorophyll - a concentration measurements by correlation analysis. Then, find the best reflectivity combination in correlation to build the model of retrieval of chlorophyll - a concentration in Taihu Lake. The result show that MODIS image data is preferably useful in quantitative retrieval model of chlorophyll - a concentration in Talhu Lake. And use the reflectivity combination of band3 and bandl7 （R＇,7 -R＇3 ）/（ R＇3 ＋ R＇,7 ） as the index to retrieve chlorophylla concentration. The wave bands of band3 and bandl7 are 459nm - 479nm and 890nm -920nm which belong to the near - infrared band and blue band, which bands we chose are different from the conclusion based by TM data.[著者文摘]
Key words:
Taihu Lake ; chlorophyll - a; remote sensing; quantitative retrieval; MODIS image data
基金资助:
教育部重点项目：湖泊水环境动态模拟系统研究（105079）;教育部博士点基金（20060284011）
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