Estimating vegetation fractional Coverage of Steppe based on Multi-spatial Resolution Remotely Sensed images

In this study, vegetation fractional coverage (VFC) of steppe was taken as the study object. Based on the Bottom-up method, we established the two-stage experiential model for estimating vegetation fractional coverage. In addition, this newly-established model is compared with sub-pixel model and common model that is acquired by simply regressing field data and remotely sensed data with moderate spatial resolution. The result suggests the two-stage experiential model for estimating vegetation fractional coverage successfully realize the aim of extending field data to local region, thereby making the spatial scale transformation of data true.