Decoupling Status of Metal Consumption from Economic Growth
Decoupling Status of Metal Consumption from Economic Growth
复制标题
金属消费与经济增长脱钩现状
DOI：
10.2320/matertrans.ml200705
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发表时间：
2007
影响因子：
1.2
通讯作者：
Kiyoshi Ijima
中科院分区：
文献类型：
--
作者：
K. Halada;Masanori Shimada;Kiyoshi Ijima
分析了22种金属消费与经济增长的脱钩状态。金属有Fe、Al、铜、铬、锌、锰、铅、镍、钴、锡、锑、硅、钼、钨、锂、铟、镓、银、金、铂、钯和稀土。每种金属的年人均消费量与人均GDP的关系可近似为两步线性公式：YM=Am，1X(X Cm)，其中Ym为人均金属年消费量M，X为人均GDP。只有Ym=Am，1X单一关系的金属被判断为处于耦合状态。当Am，1；Am，2时，该状态被判断为脱钩。此外，当Am，2；0时，判断为绝对解耦状态。发生绝对去耦合的金属有Au、Sn、Zn和W，其中铜和铅处于绝对去耦合的边界。在铁、铝、镍、钼、锑、银、钯与人均GDP脱钩的情况下，硅、铂仍处于与经济增长的耦合状态。在钴、锂、铟、镓和稀土等元素中，与经济增长的耦合关系在这几年里出现了新的变化。
The decoupling statuses of the consumption of 22 kinds of metal with economic growth were analyzed. Metals were Fe, Al, Cu, Cr, Zn, Mn, Pb, Ni, Co, Sn, Sb, Si, Mo, W, Li, In, Ga, Ag, Au, Pt, Pd and rare earths. The relations of the annual consumption per capita of each metal to GDP per capita were approximated into two steps of liner formulas; yM=aM, 1 X (X cM), where yM is the annual consumption of the metal M per capita, X is GDP per capita. The metal which has only single relation of yM=aM, 1 X was judged to stay in the state of coupling. When aM, 1>aM ,2, the state was judged to be decoupling. Furthermore, it was judged to be the status of an absolute decoupling when aM, 2<0. The metals which have attend to absolute decoupling are Au, Sn, Zn and W. Cu and Pb are at the border of the absolute decoupling. While Fe, Al, Ni, Mo, Sb, Ag, Pd are decoupling to GDP per capita, Si and Pt are still in the status of the coupling with economic growth. In the case of Co, Li, In, Ga and rare earth, new coupling relation with economic growth have developed in these several years.