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遥感技术与应用  2016, Vol. 31 Issue (6): 1158-1166    DOI: 10.11873/j.issn.1004-0323.2016.6.1158
遥感应用     
HJ-1A NDVI与MODIS NDVI时间序列提取植被物候特征对比研究
冯莉,李柳华,郭松,卢荻
(河海大学地球科学与工程学院地理信息科学系,江苏 南京 211100)
Comparative Studyon Extracting Vegetation Phenology Information from HJ-1A NDVI and MODIS NDVI Time Series
Feng Li,Li Liuhua,Guo Song,Lu Di
(Department of Geographic Information Science,School of Geographic Science and
Engineering,Hohai University,Nanjing 211100,China)
 全文: PDF(5610 KB)  
摘要:

以HJ-1A和MODIS为数据源,通过动态阈值法提取物候特征参数,对HJ\|1A NDVI和MODIS NDVI时间序列进行植被物候特征提取进行定性和定量比较,通过比较结果,提出HJ-1A NDVI数据在该应用中存在的问题,促进国产中空间高时间分辨率影像数据在植被物候信息提取研究中的应用,提高其在生态系统研究中的应用价值。结果表明:在SOS、EOS和LOS以及TOMS几个主要的物候时间点上,MODIS NDVI时间序列的标准差较小,所得物候数据更为集中,偏离度较小,所得物候数据较稳定;而HJ-1A NDVI时间序列所得物候数据的标准差较大,数据偏离程度较大,而在POS、BOS和AOS等表征植被生命周期中生长幅度数据上,其标准差较小,离散程度小。

关键词: HJ-1A NDVI时间序列MODIS NDVI时间序列动态阈值法植被物候特征南京市    
Abstract:

Taking HJ\|1A and MODIS as data source,the comparison study of HJ\|1A NDVI and MODIS NDVI time series for extracting the vegetation phenology based on the method of dynamic threshold is analyzed qualitatively and quantitatively.Through compared results,some issues of application of HJ\|1A NDVI on vegetation can be analyzed which will improve the application of relatively high spatio\|temporal remote sensing data on the urban vegetation.The results showed that the standard deviation of MODIS NDVI time series is small on the main phenological points of SOS,EOS,LOS and TOMS.There is a big difference from the standard deviation of HJ NDVI time series which is relatively big,however,on the main phenological points of POS,BOS and AOS,the standard deviation and the degree of discrete of HJ NDVI time series is small.For the different types of vegetation,HJ\|1A NDVI time series can be used to extract the vegetation phenology.

 

Key words: HJ-1A NDVI time series    MODIS NDVI time series    The method of dynamic threshold    Vegetation phenology    Nanjing city
收稿日期: 2016-05-04 出版日期: 2016-12-30
:  TP 79  
基金资助:

国家自然科学青年基金项目“集成遥感与物候规律的城市四维绿量估算与生态服务评估”(41301446 ),中央高校中央高校基本科研业务费项目(2015B11314)。

作者简介: 冯莉(1979-),女,甘肃兰州人,讲师,主要从事城市遥感方面的研究。Email:erma1014@126.com。
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引用本文:

冯莉,李柳华,郭松,卢荻. HJ-1A NDVI与MODIS NDVI时间序列提取植被物候特征对比研究[J]. 遥感技术与应用, 2016, 31(6): 1158-1166.

Feng Li,Li Liuhua,Guo Song,Lu Di. Comparative Studyon Extracting Vegetation Phenology Information from HJ-1A NDVI and MODIS NDVI Time Series. Remote Sensing Technology and Application, 2016, 31(6): 1158-1166.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2016.6.1158        http://www.rsta.ac.cn/CN/Y2016/V31/I6/1158

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