| The temporal and spatial relationship between NDVI and climatological parameters in Colorado |
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| 作者姓名： | GAO Zhi-qiang Dennis O |
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| 作者单位： | 1. Institute of Geographic Sciences and Natural Resources Research，CAS，Beijing 100101，China; 2. Natural Resource Ecology Laboratory，Colorado State University，Fort Collins. CO 80523-1499，USA |
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| 基金项目： | Knowledge Innovation Project of CAS，No. KZCX1-Y-02 |
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| 摘 要： | 1 Introduction In recent years, many researchers have demonstrated that there are essential and evident correlations between NDVI and climatological parameters (temperature and precipitation). The analysis of correlation between climate forces and time-integrated NDVI over US Northern and Central Great Plains suggested that spatial and temporal variation of precipitation and potential evapotranspiration and growing degree days in growing season are the most important control on grassland…
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| 收稿时间： | 20 May 2001 |
| 修稿时间： | 10 August 2001 |
The temporal and spatial relationship between NDVI and climatological parameters in Colorado |
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| GAO Zhi-qiang,Dennis O.The temporal and spatial relationship between NDVI and climatological parameters in Colorado[J].Journal of Geographical Sciences,2001,11(4):411-419. |
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| Authors: | Gao Zhi-qiang PhD O Dennis |
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| Institution: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS,
2. Natural Resource Ecology Laboratory, Colorado State University, Fort Collins. |
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| Abstract: | This paper describes the spatial and temporal relationship between AVHRR/NDVI (Normalized Difference Vegetation Index) and climatological parameters (temperature and precipitation), which, in some sense, is influenced by topographical factors and land-cover types in Colorado. The correlation coefficients and partial correlation coefficients have been computed pixel by pixel over Colorado in order to analyze the relationship. The temporal variation and correlation of AVHRR/NDVI, temperature and precipitation were analyzed with a sampling method. The study reveals that there exists a close correspondence between monthly NDVI and temperature, which has strong impact from temperature on the changes of NDVI in Colorado. The spatial changes of NDVI are not influenced obviously by the precipitation since these two variables are different from each other in time series in Colorado. The study clearly revealed the spatial variation and its distribution patterns of relationship between NDVI and climatic parameters (temperature and precipitation) in Colorado. |
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| Keywords: | NDVI AVHRR/NDVI temperature precipitation Colorado |
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