%0 Journal Article %A YANG Jia %A GUO Ni %A GU Jian-Hua %T Comparison Between M ODIS/NDVI and M ODIS/ EVI in Northwest China %D 2007 %R %J Journal of Arid Meteorology %P 38-43 %V 25 %N 1 %X

Using TERRA /MODIS data in some typical vegetation regions during plant growth period in 2003 and vegetation type data,the sDatial and temporal characteristics of MODIS/NDVI and MODIS/EVI in Northwest China an d the influences of atmosphere con'ec-ti0n on the two vegetation indexes were an alyzed in this paper for comparing the diferences between NDVI and EVI.The results show that distributi0ns of NDVI an d EVI are consistent in space and nearly the same as that of precipitation.Th e diference between NDVI and EVI is larger as vegetation coverage increases.In addition.the infl uence of atmosphere on NDVI and EV1 was obvious,and atmos-DheIle c0n.ecti0n made NDVI values increase and EVI values reduce;the values of NDVI are smaller than those of EVI before atmos--DheIle c0rrecti0n:while after the correction,values of NDVI are larger than those of EVI in most regions. By comparing NDVI and EVI in th0se regi0ns containing more aerosols.we found that EVI had a good performance in removing the infl uence 0l aerosols.

%U http://www.ghqx.org.cn/EN/abstract/article_8500.shtml