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遥感技术与应用  2008, Vol. 23 Issue (3): 310-315    DOI: 10.11873/j.issn.1004-0323.2008.3.310
研究与应用     
基于TM影像的典型内陆淡水湿地水体提取研究
于欢2,张树清1,李晓峰1,那晓东1,2,孔博1,2
(1.中国科学院东北地理与农业生态研究所,吉林 长春 130012;
2.中国科学院研究生院,北京 100049)
Inland Limnetic Wetlands Water Body Extraction Using TM Imagery
YU Huan 1,2,ZHANG Shu-qing1,LI Xiao-feng1,NA Xiao-dong1,2,KONG Bo1,2
(1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of
Sciences,Changchun 130012, China |2.Graduate School,Chinese Academy of Sciences,Beijing 100049,China )
 全文: PDF(1821 KB)  
摘要:

水是维系湿地生态系统稳定和健康的决定性因子,利用卫星遥感影像快速、准确地提取湿地水体信息已经成为湿地调查、研究与保护的重要手段。鉴于TM遥感影像具有较高的空间分辨率、波谱分辨率、极为丰富的信息量、较高的定位精度和相对较低的价格,其必然成为近一段时期湿地调查、研究与保护的重要数据源之一。研究基于TM遥感影像,运用多种方法针对典型内陆淡水湿地的水体信息进行了提取实验,通过对实验结果的分析得出:在面积的准确性、提取的准确度以及视觉效果3种指标下,光谱分类法较其它方法效果要好,其次为单波段阈值分析法与植被指数法,较差的是多波段谱间关系法与水体指数法;影响提取效果的主要原因是湿地水体提取不够完全,这是由影像的分辨率及湿地特殊的水文条件所造成的,采用像元分解及多源遥感数据融合技术将成为提高水体提取精度的重要手段。

关键词: TM遥感影像湿地水体提取    
Abstract:

Water was the crucial factor that kept wetlands stable and health,to fast and accurately extract wetlands water body using remote sensing imagery became an important wetlands investigation,research and protection method.Considering the middle spatial resolution and high spectrum resolution,high positioning accuracy and low price,TM remote sensing imagery would be one of the main data for wetlands investigation,research and protection.The research carried out an experiment of extracting water from inland limnetic wetlands using TM remote sensing imagery based on many arithmetic,and concluded that spectrum classification was the best among the area accuracy index,extraction accuracy index and visual effect index,the following was single band threshold and vegetation index method,however,multi-band relationship and water index method was the worst.The main negative factor that affect extraction result was that wetlands water couldn't be extracted absolutely,which was caused by the resolution of imagery and complex hydrology condition of wetlands.Therefore,pixel unmixing and multi-source remote sensing data fusion would be the important techniques of promoting water extraction accuracy.

Key words: TM    Remote sensing imagery    Wetlands    Water body    Extractio
收稿日期: 2008-01-10 出版日期: 2011-10-25
:  TP 79  
基金资助:

中国科学院知识创新工程重要方向项目“三江平原湿地农田化过程及湿地—农田景观优化格局研究”(编号:KZCX3-SW-356);全球环境基金GEF项目(编号:GF/2712-03);国家“十一五”科技支撑重点项目课题“湿地资源监测与评估技术研究”(2006BAD23 B03)。

作者简介: 于欢(1981-):男,博士研究生,研究方向为基于遥感与地理信息系统的水资源管理应用。 E-mail:yuhuan0622@126.com。
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引用本文:

于欢,张树清,李晓峰,那晓东,孔博. 基于TM影像的典型内陆淡水湿地水体提取研究[J]. 遥感技术与应用, 2008, 23(3): 310-315.

YU Huan,ZHANG Shu-qing,LI Xiao-feng,NA Xiao-dong,KONG Bo. Inland Limnetic Wetlands Water Body Extraction Using TM Imagery. Remote Sensing Technology and Application, 2008, 23(3): 310-315.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2008.3.310        http://www.rsta.ac.cn/CN/Y2008/V23/I3/310

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