| 基于关联性及趋势性分析的AVHRR NDVI及#br# MODIS NDVI数据产品比较 |
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| 引用本文： | 王高杰,黄进良,肖飞,冯奇.基于关联性及趋势性分析的AVHRR NDVI及#br# MODIS NDVI数据产品比较[J].长江流域资源与环境,2018,27(5):1143. |
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| 作者姓名： | 王高杰 黄进良 肖飞 冯奇 |
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| 作者单位： | （1.中国科学院测量与地球物理研究所，湖北 武汉 430077；2.环境与灾害监测评估湖北省重点实验室，;
湖北 武汉 430077；3.中国科学院大学，北京 100049） |
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| 摘 要： | 针对AVHRR NDVI和MODIS NDVI数据集中不同数据产品间的差异和区域适应性问题，利用2003~2013年重叠时间段MODIS Terra/Aqua的NDVI Collection 5(C5)和Collection 6(C6)产品以及AVHRR NDVI中的GIMMS NDVI3g产品，选择汉江流域典型区域进行数据对比分析。通过关联指数IOAs(Index of Association)来评价各数据在季节波动上的一致性；采用Mann Kendall检验分析各数据的长期趋势差异。结果表明，在季节性变化上，同一卫星不同版本产品之间的关联性相对较高。在年际变化上，GIMMS产品相对MODIS 产品，仅能检出部分NDVI变化趋势。在地表覆被异质性相对较高地区，GIMMS产品的长期变化趋势检出率较低。MODIS Terra的NDVI C5产品受传感器退化影响，表现出相对较高的减少趋势。
关键词： GIMMS NDVI；MODIS NDVI；Mann Kendall检验；趋势分析
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Comparison of AVHRR NDVI and MODIS NDVI Data Products #br# Based on Association and Trend Analysis |
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| WANG Gao jie,HUANG Jin liang,XIAO Fei,FENG Qi.Comparison of AVHRR NDVI and MODIS NDVI Data Products #br# Based on Association and Trend Analysis[J].Resources and Environment in the Yangtza Basin,2018,27(5):1143. |
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| Authors: | WANG Gao jie HUANG Jin liang XIAO Fei FENG Qi |
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| Institution: | (1. Institute of Geodesy and Geophysics of Chinese Academy of Science, Wuhan 430077, China; 2. Key Laboratory for ;
Environment and Disaster monitoring and Evaluation of Hubei Province, Wuhan 430077, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | In view of the divergences and regional adaptability between different data products of AVHRR NDVI and MODIS NDVI datasets, the NDVI Collection 5(C5) and Collection 6(C6) products of MODIS Terra/Aqua and the GIMMS NDVI3g products in AVHRR NDVI from 2003 to 2013 were used for comparison and analysis in typical regions of HanJiang River Basin. The consistency of the data in the seasonal fluctuation was evaluated by the association index(IOAs). The Mann Kendall test was used to analyze the long term trend of different data products. The results show that the correlation between different versions of the same satellite is relatively high in seasonal changes. In the inter annual changes, GIMMS products can only detect partial NDVI trends which MODIS products can detect. In the area where the surface coverage is relatively heterogeneous, the detection rate of GIMMS products is low. NDVI C5 product of MODIS Terra was affected by sensor degradation, showing a relatively high reduction trend.
Key words：GIMMS NDVI; MODIS NDVI; Mann Kendall Test; trend analysis |
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