Supply-side drivers of phosphorus emissions from phosphorus supply chains in China
| Autor: | Jing Zhang, Qiumeng Zhong, Yadong Yu, Jetashree, Xuechun Yang, Cuiyang Feng, Hui Li, Sai Liang |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Ecosystem Health and Sustainability, Vol 8, Iss 1 (2022) |
| Druh dokumentu: | article |
| ISSN: | 20964129 2332-8878 2096-4129 |
| DOI: | 10.1080/20964129.2022.2107578 |
| Popis: | Human activities interfere with natural Phosphorus (P) cycles by introducing increased levels of P emissions to air, land, and water. A supply-side analysis of P supply chains and associated P emissions can provide insights into underlying economic activities and transitions responsible for human-induced P emissions. Taking the mainland China as the case, this study constructs time-series physical input-output tables to describe P supply chains during 1949–2012. Subsequently, it identifies critical products and influencing factors of P supply chains enabling P emissions to the environment (including air, land, and water) from the supply perspective. The results show that phosphate rock, an important initial supplier of P from natural environment to China’s P supply chain, was responsible for 86% of P emissions in 2012. Moreover, food crops and livestock are important initial suppliers of P from soil to China’s P supply chain, through cultivation and pasturing, respectively. From 1949 to 2012, the change in primary input level was the largest driver of P emission increments, followed by changes in population, emission intensity, and primary input structure. On the contrary, changes in production structure reduced P emissions. These findings could support supply-side policy decisions on P emission control. |
| Databáze: | Directory of Open Access Journals |
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