Mean square error China 3 Decision trees 3 Biomass 2 Carbon 2 Learning algorithms 2 Neural networks 2 Root mean square errors 2 aboveground biomass 2 accuracy assessment 2 estimation method 2 grassland 2 AG-AGB 1 Above ground biomass 1 Above-ground biomass 1 Aboveground biomass 1 Accumulation model 1 Algae 1 Allometric models 1 Allometric regressions 1 Alpine grassland 1 Alpine grassland aboveground biomass 1 Alpine grasslands 1 Anthropogenic activity 1 Anthropometry 1 Artificial intelligence methods 1 Backpropagation 1 Biomass productions 1 Body sizes 1 Caragana korshinskii 1