城市生物循环（英文版）

妖怪哪里逃i

城市生物循环（英文版）
pdf
Glossary 6
Executive Summary 7
The biocycle economy 10
The significance of the biocycle economy 10
Pressures on the biocycle economy 11
Disrupted nutrient flows 11
Cities as concentrators of organic resources 13
Unrecovered organic streams 13
The circular economy vision – how to close the nutrient loops 16
The biocycle in a circular economy 16
Recovering organic waste in cities 17
Returning nutrients to the soil 18
Generating bioenergy 22
A comprehensive approach: Biorefineries 24
Conclusion 28
About the Ellen MacArthur Foundation 30
Bibliography 31