CAJ | 학술논문

能源强度是指一个国家或地区生产单位产值所消耗的能源量，它反映了经济系统对能源的依赖程度和能源的使用效率。许多国家的能源强度曲线在直观上表现出收敛的显著特征。为了对这一现象进行严格的证明和检验，该文依据时间序列协整概念，首先提出了能源强度收敛的定义，然后从一个包含能源投入的内生增长模型出发，从理论上证实了能源强度收敛的存在性。为了对能源强度收敛进行实证检验，选取24个国家，并划分组合为5组样本，分别对能源强度收敛进行了σ收敛检验和协整检验，结果表明：高收入国家、高中收入国家、中低收入国家、发展中国家和样本中所有国家都存在能源强度收敛现象；σ收敛检验还揭示出各组样本中能源强度收敛的时间段以及收敛程度的大小排序。
능원강도시지일개국가혹지구생산단위산치소소모적능원량，타반영료경제계통대능원적의뢰정도화능원적사용효솔。허다국가적능원강도곡선재직관상표현출수렴적현저특정。위료대저일현상진행엄격적증명화검험，해문의거시간서렬협정개념，수선제출료능원강도수렴적정의，연후종일개포함능원투입적내생증장모형출발，종이론상증실료능원강도수렴적존재성。위료대능원강도수렴진행실증검험，선취24개국가，병화분조합위5조양본，분별대능원강도수렴진행료σ수렴검험화협정검험，결과표명：고수입국가、고중수입국가、중저수입국가、발전중국가화양본중소유국가도존재능원강도수렴현상；σ수렴검험환게시출각조양본중능원강도수렴적시간단이급수렴정도적대소배서。
Energy intensity is the amount of energy required to generate a unit of economic output in a country or a region. It indicates the energy efficiency as well as how economic system depends on energy. Many countries＇ energy intensity curves significantly show convergent tendency, in order to prove and test the phenomenon, this article firsfly proposes the definition of the convergence of the energy intensities according to the cointegration concept of time series, and then uses an endogenous growth model including energy input to prove the existence of the convergence of the energy intensity in theory. In order to test the proposition, 24 countries are selected and divided into five groups of samples which are analyzed by the σ convergence test and the eointegration technology. The conclusions can be drawn that energy intensities are converging in the high-income countries, the upper-middle-income countries, the lower-middle-income countries, the developing countries and all countries in the sample; the σ convergence test reveals how the energy intensity in the five samples converged. This study not only theoretically proves a law about the energy intensity but also has a certain reference value to the implementation of the sustainable development strategy and the policy to reduce energy intensity.