| MODIS植被指数及其分县统计分析的实现 |
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| 引用本文： | 李星敏,卓静,李登科,张树誉,景毅刚.MODIS植被指数及其分县统计分析的实现[J].气象科技,2006,34(2):175-179. |
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| 作者姓名： | 李星敏 卓静 李登科 张树誉 景毅刚 |
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| 作者单位： | 陕西省气象局农业遥感信息中心,西安,710015 |
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| 摘 要： | MODIS归一化植被指数(NDVI)已引起了广泛的注意,它与NOAA/AVHRR的NDVI既有联系又有区别。利用同一天的NOAA/AVHRR和EOS/MODIS资料,介绍了各县域内平均NDVI的统计方法和计算结果及NDVI与增强植被指数(EVI)的差异。MODIS和AVHRR两种资料得到的NDVI数值虽然有差异,但都能很好地反映植被的空间分布和时间变化。MODIS增强植被指数(EVI)对植被条件的变化更加敏感,使定量分析的精确性提高,具有较好的应用前景。
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| 关 键 词： | NOAA/AVHRR MODIS 植被指数 分县统计 |
| 收稿时间： | 2004-09-20 |
| 修稿时间： | 2005-02-18 |
MODIS Vegetation Index and Its Calculation Method at County Level |
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| Li Xingmin,Zhuo Jing,Li Dengke,Zhang Shuyu,Jing Yigang.MODIS Vegetation Index and Its Calculation Method at County Level[J].Meteorological Science and Technology,2006,34(2):175-179. |
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| Authors: | Li Xingmin Zhuo Jing Li Dengke Zhang Shuyu Jing Yigang |
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| Institution: | Remote Sensing Information Center for Agriculture, Shaanxi Province, Xian 710015 |
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| Abstract: | MODIS Normalized Difference Vegetation Index(NDVI) has been widely noticed.It has relation with,but is different from NOAA/AVHRR NDVI.Using EOS/MODIS and NOAA/AVHRR data on the same day,the calculation of mean NDVI at county-level is conducted,and the computing method and the results are introduced.The application of the Enhanced Vegetation Index(EVI) in Shaanxi Province is discussed.Results of analysis show that although there is difference between MODIS NDVI and NOAA/AVHRR NDVI,they both can reflect the spatial distribution and the temporal variation of the vegetation.The MODIS EVI is more sensitive to the variation of vegetation conditions and can improve the precision of quantitative analysis,thus having good application potentials. |
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| Keywords: | NOAA/AVHRR MODIS vegetation index county-level NDVI calculation |
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