Above ground biomass 11 Biomass 8 aboveground biomass 8 China 5 Forestry 5 Aboveground biomass 4 Decision trees 4 Crops 3 Image enhancement 3 Regression analysis 3 Research & information: general 3 Vegetation 3 biomass 3 Antennas 2 Biomass estimation 2 Brazil 2 Ecology 2 Ecosystems 2 Forecasting 2 Learning algorithms 2 Matthiola 2 Mean square error 2 NDVI 2 Random forest 2 Random forests 2 Reforestation 2 Remote sensing 2 Research and information: general 2 Unmanned aerial vehicles (UAV) 2 estimation method 2