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遥感技术与应用  2010, Vol. 25 Issue (3): 379-386    DOI: 10.11873/j.issn.1004-0323.2010.3.379
研究与应用     
基于MODIS时序数据的澳大利亚土地利用/覆被分类与验证

贾明明1,2,刘殿伟1,宋开山1,王宗明1,姜广甲1,2,杜 嘉1,2,曾丽红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
Classification and Verification of Land Use/Cover in Australia Using MODIS Time-series Data
JIA Ming-ming1,2,LIU Dian-wei1,2,SONG Kai-shan1,WANG Zong-ming1,JIANG Guang-jia1,2,DU Jia1,2,ZENG Li-hong1,2
1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,
Changchun 130012,China;2.Graduate School of Chinese Academy of Sciences,Beijing 100049,China
 全文: PDF(2764 KB)  
摘要:

选取对气候变化敏感的澳大利亚作为研究区,基于MOD13Q1数据,对澳大利亚2000年土地利用/覆被进行分类。通过Savizky-Golay滤波方法构建高质量NDVI时序数据,为分类奠定数据基础。采用了以决策树为主的混合分类方法对研究区土地利用/覆被进行分类,该方法综合利用了ISODATA分类结果、NDVI阈值及其时间序列主成分分析特征量等数据。通过面积对比和空间位置匹配等多角度验证的方法,综合比较MOD12Q1,GLC_2000与本研究的结果,发现本研究的总体分类精度为63.65%,Kappa系数为0.56,较以上两种已有的土地覆盖产品具有一定优势。

关键词: 混合分类Savizky-Golay滤波NDVI多角度验证    
Abstract:

his study is to classify land use/cover of Australia in 2000 based on data MOD13Q1,for it's sensitive to climate change.In order to reconstruct high quality NDVI time series data,Savizky-golay filtering method was applied for the NDVI data set.In this study,a combination of unsupervised classification of ISODATA and hierarchical decision tree was applied for the land use/cover classification over the whole country of Australia,and NDVI values of specific season,transformed NDVI values,and principal component analysis were also performed on the data set for decision tree threshold value choosing.Based on area of contract and spatial location matching to assess the accuracy of the classification,comparison the classification results of MOD12Q1,GLC_2000 with the results was done for this study.Random selected samples and generate confusion matrix.The overall classification accuracy of 63.65% and the Kappa coefficient of 0.56 were achieved in this study.This result is better than the result achieved in MOD12Q1 and GLC_2000.

Key words: Hybrid classification    Savizky-golay filter    NDVI    Multi-angle verification
出版日期: 2010-10-20
基金资助:

中国科学院知识创新工程重要方向项目(KZXW2-YW-340;KZXW2-YW-341)。

通讯作者: 宋开山 E-mail:Songks@neigae.ac.cn   
作者简介: 贾明明 (1986-),女,硕士研究生,主要从事环境遥感研究。E-mail:jiamm691@yahoo.com.cn。
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引用本文:

贾明明, 刘殿伟, 宋开山, 王宗明, 姜广甲, 杜 嘉, 曾丽红. 基于MODIS时序数据的澳大利亚土地利用/覆被分类与验证[J]. 遥感技术与应用, 2010, 25(3): 379-386.

JIA Ming-ming, LIU Dian-wei, SONG Kai-shan, WANG Zong-ming, JIANG Guang-jia, DU Jia, ZENG Li-hong. Classification and Verification of Land Use/Cover in Australia Using MODIS Time-series Data. Remote Sensing Technology and Application, 2010, 25(3): 379-386.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2010.3.379        http://www.rsta.ac.cn/CN/Y2010/V25/I3/379

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