optimization Optimisations 37 China 12 Ecosystems 11 genetic algorithm 9 Optimization 8 algorithm 8 Genetic algorithms 7 biofuel 7 machine learning 7 numerical model 7 sustainability 7 Biofuels 6 Cost effectiveness 6 performance assessment 6 Energy efficiency 5 Particle swarm optimization (PSO) 5 Response surface methodology 5 energy efficiency 5 response surface methodology 5 Carbon 4 Climate change 4 Economic and social effects 4 Efficiency 4 Energy utilization 4 Forestry 4 Humans 4 Learning algorithms 4 Optimal solutions 4 Optimization algorithms 4