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 Papers |
| First Author: |
Shenghui Cui |
| Abstract: |
Rapid worldwide urbanization calls for a better understanding of phosphorus (P) metabolismand the interaction of the physical, ecological and social drivers of P cycling in urban systems. We quantified the P metabolism in Longyan, a city with a major agricultural economy, and analyzed its long-termtrends over the rapid urbanization period of 1985–2010. Both input P (from 4811 t P to 14,296 t P) and output P (from 4565 t P to 13,509 t P) increased significantly. The agricultural subsystem contributed most to the P metabolism, accounting for 85% of total P input. The share of P input lost to the environment, i.e. discharge to water, accumulation in the soil and landfill, increased from 66% to 72%, while food production efficiency decreased from 48% to 29%. Per capita P input showed linear relationships with the Human Development Index (HDI), S-curve relationship with the urbanization rate, and logistic curve relationship with per capita disposable income. A more meat-based diet shift both in Longyan and surrounding cities greatly affected Longyan's food production structure. Our results demonstrate that P metabolic quantity, configuration, and efficiency in production systems can change drastically in response to changes in consumer and producer behavior as well as in socioeconomic structure. A larger regional scale should be considered in urban P management, when trying to mitigate the increase in P use. |
| Contact the author: |
Shenghui Cui |
| Page Number: |
924-932 |
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| PubYear: |
2015 |
| Volume: |
563 |
| Publication Name: |
Science of the Total Environment |
| The full text link: |
http://www.sciencedirect.com/science/article/pii/S0048969715302692 |
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