『Summary
　Human activities have significantly intensified natural phosphorus cycles, which has resulted in some serious environmental problems that modern societies face today. This article attempts to quantify the global phosphorus flows associated with present day mining, farming, animal feeding, and household consumption. Various physical characteristics of the related phosphorus fluxes as well as their environmental impacts in different economies, including the United States, European countries, and China, are examined. Particular attention is given to the global phosphorus budget in cropland and the movement and transformation of phosphorus in soil, because these phosphorus flows, in association with the farming sector, constitute major fluxes that dominate the anthropogenic phosphorus cycle. The results show that the global input of phosphorus to cropland, in both inorganic and organic forms from various sources, cannot compensate for the removal in harvests and in the losses by erosion and runoff. A net loss of phosphorus from the world's cropland is estimated at about 10.5 million metric tons (MMT) phosphorus each year, nearly one half of the phosphorus extracted yearly.

Keywords: biogeochemistry; cropland; industrial ecology; soil erosion; substance flow analysis (SFA); waste management』

Introduction
The human-intensified phosphorus cycles
　The natural cycle
　　Inorganic cycle
　　Organic cycle
　The societal cycle
　　Global phosphate consumption
　　Crop harvests
　　Livestock and animal wastes
　　Food consumption and human wastes
　Phosphates in soil and losses
　　Phosphates in soil
　　Phosphorus losses
　　Phosphate balance in cropland
Environmental impacts of phosphorous uses
　Mineral conservation
　Soil erosion
　Animal wastes
　Sewage treatment
　Detergents use
　Eutrophication
Regulating the societal phosphorus flows
Notes
References
Supplementary material