Global correlation analysis for NDVI and climatic variables and NDVI trends: 1982-1990

K. Ichii, A. Kawabata, Y. Yamaguchi
2002 International Journal of Remote Sensing  
The relationship between the Normalized DiVerence Vegetation Index (NDVI) and climatic variables was analysed on a global scale using the Path nder AVHRR Land NDVI data set, and observed climate data for the period 1982-1990. A signi cant correlation between interannual NDVI and temperature variation was recognized in the northern mid-to high latitude areas between spring and autumn. A signi cant correlation was also identi ed between the NDVI, temperature and precipitation in northern and
more » ... ern semiarid regions. A comparison of global NDVI trends show that NDVI increases in the northern mid-and high latitudinal zones are related to temperature rise, and NDVI decreases in southern semiarid regions are due to a precipitation decrease in the survey period. Although the cause of NDVI increases in the equatorial regions remains unclear, the combined eVects of forest regrowth, deforestation and fertilization may impact on the NDVI trend.
doi:10.1080/01431160110119416 fatcat:e3lbg72uabdsjlc4ho4duvqyyy