关键词: 生产性服务业, 地区经济增长, 调节效应, 有效性

Abstract: This paper explored the possible effects of five factors,the industrial base,the level of manufacturing technology,the degree of manufacturing specialization,the degree of urbanization and the industrial structure level,on the relationship between producer services and regional economic growth by a theoretical analysis.Given that time and geological differences may impair the results,Beijing and Xi'an,both modern cities in China although differing in economic levels,were selected to conduct a comparative analysis.Later,a multiple regression test,with the above-mentioned five factors as moderators,was conducted to study the moderating effects.And the data source was from the statistics yearbooks of Beijing and Xi'an.Finally,based on the comparative analysis results of Beijing and Xi'an,the paper proposed some recommendations to enhance the promoting effect of productive services on regional economic growth.

Key words: producer services, regional economic growth, moderators, effectiveness