Analysis on difference of phenology extracted from EVI and LAI

摘要

While EVI and LAI are the most widely used vegetation parameters which can be used for remote sensing phenology extraction, this paper aims at assessing the differences of phenology information extracted from EVI and LAI time series and exploring either EVI or LAI time series performs well for all vegetation types over a large scale. To achieve this, GLASS-LAI phenology product(GLP) was generated by the same algorithm with MODIS-EVI phenology product(MLCD) over China from 2001 to 2012. The two phenology products were compared in different climate regions and vegetation types over a large scale and evaluated by ground observations. Results show that the missing rate of GLP(11.90%) is less than that of MLCD(22.84%). The difference between GPL and MLCD varies in different climate regions and vegetation types. GLP performs better than MLCD in croplands and forests, while MLCD performs better than GLP in grasslands.