摘要
目前鲜有文献涉及R&D资本存量的估计,且存在明显缺陷,以致影响了后续研究的准确性和可靠性,因而有必要延长年限重新估计。本文合理选取R&D投入指标、增长率g、折旧率δ和价格指数权重,利用永续盘存法对中国1978—2012年R&D资本存量进行了测算。研究发现:(1)2000年是中国R&D资本存量增长的突破点,实现了从缓慢低位增长到迅速攀升的转变;(2)R&D资本存量占GDP份额呈现为"U"型走势,经历了先下降后提升的过程;(3)无论是R&D资本存量的绝对值还是R&D资本存量占GDP份额,中国均明显落后于美国。中国R&D活动取得了重要进展,但仍需通过加大R&D投入以提升国家创新能力。
Currently the few estimations on R＆D capital stock have revealed significant drawbacks,which affects the accuracy and reliability among subsequent researches.This paper selected R＆D input indicator,R＆D growth rate,R＆D depreciation rate and the weight of price index,and applied a perpetual inventory method on R＆D capital stock calculation from 1978 to 2012.The research findings are：（1 ）year 2000 is the essential turning point of R＆D capital stock growth which obtains effective transition from the slowly creep to the sharply rise-up;（2）GDP shares is a fitted U-shaped curve which firstly descends and then ascends;（3）China’s innovation capability clearly falls behind America’s whether R＆D capital stock amount or GDP shares.China has achieved great improvements on R＆D programs,but it is still urgent to enhance national innovation capability by continuous R＆D inputs.
出处
《经济与管理研究》
CSSCI
北大核心
2015年第2期18-25,共8页
Research on Economics and Management
基金
中国社会科学院哲学社会科学创新工程项目"科技战略与科技政策研究和评价"
关键词
R&D
投入
资本存量
永续盘存法
国家创新能力
R＆D inputs capital stock perpetual inventory method national innovation capability
