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污染治理是长江经济带生态环境保护与绿色发展的难点与痛点，而高污染产业集聚正是造成长江环境问题的重要诱因。本报告以污染密集型产业为例，基于1999～2018年长江经济带沿线省市面板数据，采用污染密集指数和加权标准差椭圆方法，系统识别污染密集型产业行业范畴及其集聚时空演化格局，进而采用固定效应模型探究污染密集型产业集聚的绿色经济效应。结果显示：长江经济带污染密集型产业集聚深度弱于全国水平，产业结构朝绿色低碳化转型，下游地区转型效果尤为突出；长江经济带污染密集型产业集聚地区分异显著，中上游地区污染产能集聚能力较强，重心呈向西南移动趋势；污染密集型产业集聚对长江经济带绿色发展能力在短期内具有抑制作用，引致污染生产和污染扩散加剧，以中上游地区最为凸显；污染密集型产业集聚在长期存在绿色转型机制，内生性产业集群与政府有序布局使得污染产能收缩，下游、中游、上游地区绿色转型速率梯度递增。进一步提升长江经济带绿色发展能力，应强化污染型产业绿色转型技术支撑，优化对污染型产能扩张与迁移的监管，加快绿色新兴产能培育。
<<Pollution control is the difficulty and pain point of ecological environment protection and green development in the Yangtze River Economic Belt，and high pollution industry’s agglomeration is the important inducement of environmental problems. Based on the panel data of provinces along the Yangtze River Economic Belt from 1999 to 2018，the pollution intensive industry category and its spatial-temporal evolution pattern are systematically identified by using pollution intensive index and weighted standard deviation ellipse method，and then the fixed effect model is used to explore the green economic effect of pollution-intensive industry agglomeration. The results show that：the depth of pollution intensive industrial agglomeration in the Yangtze River Economic Belt is weaker than the national level，the industrial structure is transforming towards green and low-carbon，and the transformation effect in the downstream area is particularly prominent；the pollution intensive industrial agglomeration areas in the Yangtze River Economic Belt are significantly different，the pollution production capacity in the middle and upstream areas is strong，and the center of gravity is moving to the southwest；the pollution intensive industrial agglomeration has a strong impact on the Belt’s economy in the short term，the green development ability can restrain pollution production and pollution diffusion，especially in the middle and upper reaches；the pollution intensive industry cluster has a long-term green transformation mechanism，the endogenous industry cluster and the orderly layout of the government lead to the reduction of pollution production capacity，and the green transition rate in the lower，middle and upper reaches increases gradually. To further improve the green development capacity of the Yangtze River Economic Belt，it’s necessary to strengthen the technical support of green transformation of pollution-based industries，optimize the supervision of expansion and migration of pollution-based production capacity，and speed the cultivation of green emerging industry.
<<| Keywords： | Industrial AgglomerationGreen DevelopmentYangtze River Economic BeltPollution-Intensive Industry |
