Sunlight Auto and factory CO2 cycle emissions Photosynthesis Plant respiration Animal respiration Organic carbon Decay Root organisms Dead organisms respiration and waste products Ocean Fossils and fossil fuels uptake
More rice More pigs More fertilizer
More rice More rice More pigs More pigs More fertilizer More fertilizer
Ecosystem structure 系统结构 Components spatial relation System boundary 系统的层次 系统的整介功能 111>2 Ratio Relation 系统的削减功能 1+1<2 系统的变异功能 11142
Ecosystem structure 系统结构 Components spatial relation System boundary Ratio Relation
Input:Fertilizer,insecticides,additive, antibiotics 系统边界 boundary Output:grain,vegetable,pork(猪肉》
Input：Fertilizer, insecticides, additive, Fertilizer, insecticides, additive, antibiotics antibiotics 系统边界 boundary Output：grain, vegetable, pork ( grain, vegetable, pork (猪肉）