| Abstract | This paper classes the total fixed capital over a country into three categories, namely, economic infrastructure capital, social infrastructure capital, and non-infrastructure capital, and demarcates the range of investment in each of them respectively. Then, it estimates the three categories of capital stocks in China at both national-level over 1981-2012 and provincial level over 1997-2012 according to the demarcation. With the more accurate data, this paper finally estimates the output elasticities of the three categories of capital. The estimation shows that each category plays a positive but different role in economic growth. |