增加值率下降意味着什么

What Does It Mean That China's Value-added Rate Goes Down

增加值率是从总体上度量一个经济体投入产出效益的综合指标。中国的增加值率一直在下降,表明中国经济增长的质量在下降。本文定义了中间投入贡献系数,给出其与增加值率的关系,通过分析中间投入贡献系数的变化本文得出,新增加中间投入品的贡献系数下降是造成总体中间投入贡献系数进而增加值率下降的原因。接着本文利用变参数经济计量模型,测算了改革开放以来国内中间投入和进口中间投入的贡献系数的数值和变化情况,并就提高增加值率的可能方面进行了探讨。

Value-added rate is a comprehensive index which measures input-output efficiency of an economy as a whole. China＇s valus added rate goes down all along, that shows China＇s economic growth quality is becoming worse. This paper defines contribution coefficient of intermediate input, and its relationship with value-added rate. By analyzing the changes of contribution coefficient of intermediate input, we can get that it is contribution coefficient of new-increased intermediate input goes down that leads to the total contribution coefficient of intermediate input, thus value-added rate, goes down, Following that this paper makes use of parameter-changed econometric model to measure the value and changes of contribution coefficient of both domestic and import intermediate input since open and reform, then explores some possible aspects of raising value-added rate.