Version 1
: Received: 29 May 2017 / Approved: 30 May 2017 / Online: 30 May 2017 (08:44:03 CEST)
Version 2
: Received: 1 June 2017 / Approved: 2 June 2017 / Online: 2 June 2017 (07:36:06 CEST)
How to cite:
Wang, M.; Liang, Y.; Chen, W.; Li, X. Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014. Preprints2017, 2017050213. https://doi.org/10.20944/preprints201705.0213.v1
Wang, M.; Liang, Y.; Chen, W.; Li, X. Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014. Preprints 2017, 2017050213. https://doi.org/10.20944/preprints201705.0213.v1
Wang, M.; Liang, Y.; Chen, W.; Li, X. Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014. Preprints2017, 2017050213. https://doi.org/10.20944/preprints201705.0213.v1
APA Style
Wang, M., Liang, Y., Chen, W., & Li, X. (2017). Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014. Preprints. https://doi.org/10.20944/preprints201705.0213.v1
Chicago/Turabian Style
Wang, M., Wu Chen and Xin Li. 2017 "Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014" Preprints. https://doi.org/10.20944/preprints201705.0213.v1
Abstract
With the increasing of copper consumption, the in-use stock of copper tends to increase. This paper used the “average use life method” to quantify the amount of copper in-use stock, and calculated the average age of in-use stock. It was indicated that the total in-use stock had an overall smooth trends, and reached its peak in 2007 was about 68.9 Mt (million tons), in addition, in-use stock per capita reached its peak, 234 kg/capita in 2001. The results demonstrated that during the period 1992-2002, the average age of copper in-use stock was continually decreased, but gradually increased since the year 2003. The fixed assets depreciation method used in this paper is applied to analyze depreciated copper in-use stock, and to analyze the relationship with economic indicator (GDP). It was demonstrated that it was inconsistent with the theory of Environmental Kuznets Curve (EKC) before 2000, this might be the demand for copper in the service sector is greater than the reduced strength of alternatives. Finally, scenario analysis of future copper in-use stock and depreciated copper in-use stock per capita in the U.S. were presented. The corresponding average age of the in-use stock will have a slight rise in the next decade.
Keywords
copper; in-use stock; average age; average use life method; fixed assets depreciation method
Subject
Business, Economics and Management, Business and Management
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.