| 基于MODIS的广东省植被指数序列构建与应用 |
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| 引用本文： | 何全军,曹静,张月维.基于MODIS的广东省植被指数序列构建与应用[J].气象,2008,34(3):37-41. |
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| 作者姓名： | 何全军 曹静 张月维 |
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| 作者单位： | 广州气象卫星地面站,510640 |
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| 基金项目： | 广东省气象局气象科技项目 |
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| 摘 要： | 植被指数是衡量植被长势的重要指标,植被指数序列有助于准确地认知植被覆盖、土地利用和土壤水分的时空变化规律,以及进行干旱和植被生长监测.利用2004-2006年的MODIS数据,选择RVI、NDVI和EVI三种植被指数,采用最大值合成法进行广东省植被指数序列构建.按照不同植被覆盖对三种植被指数的年际变化规律进行分析,并通过NDVI进行植被覆盖度计算以及植被覆盖等级分类来分析植被的空间分布.结果表明,建立的植被指数序列能真实地反映植被生长规律,植被覆盖度和广东地区的植被实际分布状况一致.说明建立植被指数序列是动态监测广东省植被长势的及植被环境的变化的有效方法.
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| 关 键 词： | MODIS 植被指数 时间序列 |
| 收稿时间： | 2007/9/13 0:00:00 |
| 修稿时间： | 2007年9月13日 |
Establishment and Application of Vegetation Index Sequences in Guangdong Based on MODIS Data |
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| He Quanjun,Cao Jing and Zhang Yuewei.Establishment and Application of Vegetation Index Sequences in Guangdong Based on MODIS Data[J].Meteorological Monthly,2008,34(3):37-41. |
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| Authors: | He Quanjun Cao Jing and Zhang Yuewei |
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| Institution: | Guangzhou Meteorological Satellite Ground Station, 510640;Guangzhou Meteorological Satellite Ground Station, 510640;Guangzhou Meteorological Satellite Ground Station, 510640 |
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| Abstract: | Vegetation index (VI) is an important criterion to evaluate vegetation
condition. VI time series can be used to judge the spatial temporal change rul
e
s of the vegetation coverage, land use and soil moisture, also they can be used
to
monitor drought and vegetation condition. Three kinds of vegetation indices, i.e
., ratio vegetation index (RVI), normalized difference vegetation index (NDVI) a
nd enhanced vegetation index (EVI), were selected to establish the time series f
or Guangdong province using maximum value composites (MVC) based on MODIS data i
n 2004-2006. The rules of vegetation growth were analyzed in different vegetatio
n cover type for the three vegetation indices. The vegetation coverage was compu
ted by NDVI and classified to ana |
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| Keywords: | MODIS vegetation index time series |
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