中国环境产品进出口贸易对碳排放的影响
毛熙彦, 贺灿飞, 王佩玉, 许蕊, 胡醒木子, 贺舒琪

Effects of China's trade in environmental goodson carbon emissions
MAO Xi-yan, HE Can-fei, WANG Pei-yu, XU Rui, HU Xing-mu-zi, HE Shu-qi
图3 1996—2019年中国进出口环境产品结构的标准化赫芬达尔系数
Fig. 3 The standardized Herfindahl coefficient of the structure of China's import and export trade of environmental goods from 1996 to 2019