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遥感技术与应用  2010, Vol. 25 Issue (1): 91-96    DOI: 10.11873/j.issn.1004-0323.2010.1.91
研究与应用     
ALOS PALSAR数据在漳江口红树林提取中的应用
肖伟山1,汪小钦1,凌飞龙1,2
1.福州大学空间数据挖掘与信息共享教育部重点实验室,福州大学福建省空间信息工程研究中心,福建 福州 350002; 2.中国林业科学研究院资源信息研究所,北京 100091
The Application of  ALOS PALSAR Data on Mangrove Forest Extraction
XIAO Wei-shan1,WANG Xiao-qin1,LING Fei-long1,2
1.Key Laboratory of Spatial Data Mining & Information Sharing of Ministry of Education,Spatial Information Research Center of Fujian Province,Fuzhou University,Fuzhou 350002,China;
2.Institute of Forest Resources Information Technique, Chinese Academy of Forestry,Beijing 100091,China
 全文: PDF(2241 KB)  
摘要:

红树林是国际上生物多样性保护和湿地生态保护的重要对象,及时获取红树林面积变化是加强红树林保护的迫切需求。以福建漳江口红树林国家级自然保护区为研究区域,对2007年多时相的ALOS PALSAR数据进行处理,分析红树林与各典型地物L波段HH、HV极化的后向散射值的时间变化特征及去极化特征。红树林在L波段HH和HV极化的后向散射随时间变化不明显,与其它林地较为相似,但两者去极化能力差异明显。相对于时相信息,极化信息对于提取红树林的作用更为重要。基于面向对象分类方法,提出应用HH、HV和HV与HH比值进行红树林提取的方法,取得较好的分类结果。

关键词: 红树林ALOS PALSAR后向散射系数去极化特性漳江口    
Abstract:

Mangrove forest is an important vegatation type on biodiversity conservation and wetland ecological protection.Acquisition changes on mangrove area timely is an urgent need for protection.In this paper,taking Fujian Zhangjiang Estuary National Nature Reserve as study area,multi-temporal ALOS PALSAR data acquired in 2007 are processed.The temporal change characteristics and depolarization characteristics on L band HH、HV channel are analyzed.On L band HH、HV channel,backscatter information does not change significantly over time,which is similar to local forests,but depolarization ability between mangrove forests and local forests is obviously different.Compared to temporal information,polarization information is more important for mangrove forests extraction.Based on object\|oriented approach classification,we proposed a method for mangrove forests extraction by using HV,HH polarization and their ratio from a mono temporal data.The results show that mangrove can be extracted with high accuracy.

Key words: Mangrove forests    PALSAR    Backscatter coefficient    Depolarization characteristics    Zhangjiang Estuary
收稿日期: 2009-07-08 出版日期: 2011-11-04
基金资助:

福建省科技重点项目(2009I0014),国家科技支撑计划(2007BAH16B01)。

作者简介: 肖伟山(1983-),男,硕士研究生,研究方向为环境资源遥感和雷达遥感。E-mail:121410213@qq.com。
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引用本文:

肖伟山, 汪小钦, 凌飞龙. ALOS PALSAR数据在漳江口红树林提取中的应用[J]. 遥感技术与应用, 2010, 25(1): 91-96.

XIAO Wei-shan, WANG Xiao-qin, LING Fei-long. The Application of  ALOS PALSAR Data on Mangrove Forest Extraction. Remote Sensing Technology and Application, 2010, 25(1): 91-96.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2010.1.91        http://www.rsta.ac.cn/CN/Y2010/V25/I1/91

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