摘要
非洲大陆是我国"走出去"战略以及"一带一路"倡议的重要矿产资源获取地,我国大批矿山企业在当地投资已有超过二十年的历史。围绕我国矿业近年在非洲进行矿业投资效率如何的疑问,运用超效率DEA方法,选取刚果(金)、南非等9个国家,对2014年和2020年我国对这些国家矿业的投入-产出数据进行实证研究,以反映我国矿业对非洲投资效率的差异和变化趋势。结果表明:我国对非洲矿业投资存在区域不均衡、投资矿种过于集中等问题,多数国家投资效率处于中、低水平且投资效率差异较大,投资效率整体呈收敛态势,投资规模紧缩。因此,提出了优选投资区域,调整投资矿种;扩大投资规模,提升投资效率;把握新冠肺炎疫情影响下投资调整期机遇,稳中求进等对策建议。
The African continent is an important mineral resource acquisition site for the our country’s"go global"strategies and"the Belt and Road"initiative.A large number of Chinese mining companies have invested in Africa for more than two decades.How efficient is our country’s mining investment in Africa in recent years.The authors use the super-efficiency DEA method to select 9 countries including Democratic Republic of the Congo and South Africa to conduct empirical research on our country’s mining input-output data in these countries in 2014 and 2020 to reflect the efficiency data difference and trend of change of our country’s mining investment in Africa.The results show that our country’s mining industry investment in Africa is regionally unbalanced,and investment in minerals is too concentrated.The investment efficiency of most countries is at medium and low levels and the difference in investment efficiency is large.The overall investment efficiency is converging and the investment scale is shrinking.Therefore,it proposes to optimize investment areas,adjust investment minerals,expand investment scale,improve investment efficiency,seize opportunities in the investment adjustment period under the influence of the COVID-19,while maintaining stability and other suggestions.
作者
宋科余
柳群义
SONG Keyu;LIU Qunyi(MNR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;Shanxi Institute of Geological Survey,Taiyuan 030006,China)
出处
《中国矿业》
北大核心
2020年第12期48-54,共7页
China Mining Magazine
基金
中国地质调查局地质调查项目“国家重点关注矿种的资源形势动态分析与安全评估预警”资助(编号:DD20190675)。
关键词
超效率DEA
矿业
投资
效率评价
非洲
super efficiency DEA
mining industry
investment
efficiency evaluation
Africa