Phosphorus resource governance on the basis of international flow analysis focusing on Asian region

磷是农业粮食生产和化学工业的重要战略资源。考虑到磷资源的供应有限，对目前未开发的磷资源的数量和可用性进行评估是很重要的。因此，我们开发了综合磷循环投入产出(IPCIO)模型来估计经济活动对磷的需求，并对循环效果进行评估。我们发现，汽车行业需要黄磷，约占其供应链所需磷的一半，而亚洲的黄磷生产基地只位于中国和越南，几乎所有的供应都依赖这两个国家。有人建议，由于黄磷供应的延误对整个供应链造成重大影响。

Phosphorus is an important strategic resource for agricultural food production and the chemical industry. Considering the limited supplies of phosphorus resources, it is important to evaluate the quantity and availability of currently untapped phosphorus resources. Thus, we developed the Integrated Phosphorus Cycle Input Output (IPCIO) model to estimate the phosphorus requirements for economic activities and to evaluate the recycling effects. We found that automotive industry requires yellow phosphorus, which comprises about half of all required phosphorus in its supply chain, while the production bases of yellow phosphorus in Asia are located only in China and Vietnam, with practically the whole supply dependent on these two countries. It was suggested that since delays in the supply of yellow phosphorus present significant effects throughout the supply chain.