| Model establishment of vegetation coverage extraction in sandy desertification area based on MODIS image data |
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| DOI：10.7606/j.issn.1000-7601.2008.06.42 |
| Key Words: vegetation information inversion NDVI MODIS data |
| Author Name | Affiliation | | HUO Aidi | College of Environmental Science and Engineering Chang’an University, Xi’an,Shaanxi 710064,China | | KANG Xiangwu | Institute of Scientif ic and Technical Information of China,Beijing 100038,China | | WANG Guoliang | Northwest A ＆ F University,Yangling,Shaanxi 712100,China | | WU Suli | Northwest A ＆ F University,Yangling,Shaanxi 712100,China | | WEI Jieqiong | Northwest A ＆ F University,Yangling,Shaanxi 712100,China |
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| Abstract: |
| Because complex parameters of vegetation information extracted from MODIS data lack appropriate validation method and have low accuracy at present a method was proposed using the maximum and the minimum vegetation coverage to determine the parameters of vegetation coverage inversion based on the MODIS data．According to the comparison between vegetation parameters extracted from MODIS data and the synchronous ground data in Mu Us sandy land it was found that the model accuracy was pretty high and the correlation between the extracted parameters and the ground data is significant and the correlation coefficient reached 0．93．The results shown the model introduced in this paper is suitable for vegetation coverage extraction and it could be used for vegetation dynamic monitoring in large-scale region by MODIS data. |
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