基于SPOT-VGT和NOAA-AVHRR时间序列分析的安第斯山脉环境变化监测

2011 6th International Workshop on the Analysis of Multi-temporal Remote Sensing Images (Multi-Temp) Pub Date : 2011-07-12 DOI:10.1109/MULTI-TEMP.2011.6005100

C. Toté, Katia Beringhs, E. Swinnen, Gerard Govers

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引用次数: 5

摘要

环境变化是安第斯地区的一个重要问题。本研究的目的是基于SPOT-Vegetation和NOAA-AVHRR的时间序列分析，研究安第斯地区NDVI的动态变化，并确定这种变化在多大程度上可归因于气候变化或人为影响。对NDVI和SPI进行相关性分析，以确定每像素的最佳滞后。采用线性最小二乘回归分析了SDVI和SPI的变化趋势。在46%的地区发现了显著的植被趋势。两个NDVI时间序列的结果不同，但在SPOT-Vegetation数据中植被与降水的耦合更为明显。

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Monitoring environmental change in the Andes based on SPOT-VGT and NOAA-AVHRR time series analysis

Environmental change is an important issue in the Andes region. The objectives of this research are to study NDVI dynamics in the Andes region based on time series analysis of SPOT-Vegetation and NOAA-AVHRR, and to recognize to which extent this variability can be attributed to either climatic variability or human induced impacts. Correlation analysis between NDVI and SPI were performed in order to identify the best lag per pixel. Trends in SDVI and SPI were investigated using linear least square regression. Significant vegetation trends are found in 46% of the area. Both NDVI time series lead to different results, but the coupling of vegetation and precipitation is more pronounced for the SPOT-Vegetation data.

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2011 6th International Workshop on the Analysis of Multi-temporal Remote Sensing Images (Multi-Temp)

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