[1]付宇,韦玉春,周宇,等.水体中有色可溶性有机物的测量及其变化[J].南京师大学报(自然科学版),2012,35(01):95-103.
 Fu Yu,Wei Yuchun,Zhou Yu.The Measurement and Changes of Chromophoric Dissolved Organic Matter in Water[J].Journal of Nanjing Normal University(Natural Science Edition),2012,35(01):95-103.
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水体中有色可溶性有机物的测量及其变化()
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《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

卷:
第35卷
期数:
2012年01期
页码:
95-103
栏目:
地理学
出版日期:
2012-03-20

文章信息/Info

Title:
The Measurement and Changes of Chromophoric Dissolved Organic Matter in Water
作者:
付宇;韦玉春;周宇;
南京师范大学教育部虚拟地理环境重点实验室,江苏南京210046
Author(s):
Fu YuWei YuchunZhou Yu
Key Lab of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing 210046,China
关键词:
有色可溶性有机物吸光度水色碳循环
Keywords:
chromophoric dissolved organic matter absorbencywater colorcarbon circulation
分类号:
X524
摘要:
有色可溶性有机物( CDOM) 是水色遥感的重要组分之一,在水生生态系统、光学遥感、有机污染、全球碳循环等方面具有重要的研究意义,这已成为国内外学者研究的热点. 本文系统总结了国内外CDOM 测量计算的方法、测量中存在的问题、CDOM 的时空变化特点及其相关因素,以期为相关的工作提供参考. 目前CDOM 的常规测量计算方法包括光谱吸收系数和荧光光谱法两种,前者使用355 nm、375 nm、440 nm 等波长处的吸收系数来表示CDOM 的浓度,后者采用200 nm ~ 435 nm 激发波长和250 nm ~ 600 nm 发射波长的荧光强度来表示 CDOM 的浓度. CDOM 吸收系数在不同时间段、不同区域、不同深度或不同类型水体中均存在差异,且其值大小与盐度、叶绿素a 浓度、DOC、悬浮泥沙浓度等因素存在一定的相关性.
Abstract:
Chromophoric dissolved organic matter ( CDOM) is one of the major constituents in water color remote sensing. It is significantly important in the research field such as aquatic ecosystem,optical remote sensing,organic pollution and global carbon circulation,and becoming a hot research topic. This paper systematically summed up the measurement and calculation methods of CDOM,measurement problems,spatial and temporal changes of CDOM and its correlative factors,so as to provide a reference for related work. Presently,routine measurement and calculation methods of CDOM include spectral absorption coefficient and fluorescence spectrum method,CDOM concentration is expressed by absorption coefficient at 355 nm, 375 nm or 440 nm in the former,and expressed by fluorescence intensity at excitation wavelength between 200 nm and 435 nm,and emission wavelength between 250 nm and 600 nm in the latter. CDOM absorption coefficient in water varying with time,region,depth or water body type,and its value is correlated with factors such as salinity,chlorophylla concentration,DOM ( dissolved organic matter) ,suspended sediment concentration and others.

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备注/Memo

备注/Memo:
基金项目:江苏省普通高校自然科学研究计划资助( 09KJA420001) 、国家自然科学基金( 40771152) .
通讯联系人:付宇,硕士,研究方向: 遥感与GIS 应用. E-mail: fuyu1203@ gmail. com
更新日期/Last Update: 2013-03-11