Remote sensing estimation method for grassland above-ground biomass and fixed carbon content thereof

The invention discloses a remote sensing estimation method for grassland above-ground biomass and fixed carbon content thereof. The remote sensing estimation method comprises the following steps: acquiring high-resolution remote sensing data of a vegetation vigorous growth period in a working area and medium-resolution remote sensing data of a time sequence; acquiring land utilization data, and further acquiring a grassland distribution area; obtaining a vegetation index based on the remote sensing data, and obtaining a vegetation region based on the distribution region and the vegetation index; dividing the vegetation area coverage degree based on the normalized vegetation index; selecting vegetation indexes meeting different coverage degrees to cooperatively calculate a leaf area vegetation index; estimating grassland biomass and carbon sequestration based on the leaf area vegetation index; on the basis of fully considering the advantages of high-resolution and medium-resolution remote sensing, the applicab