北京市政府制定的产业政策把一般造纸列为限制发展的行业。根据这一政策,近几年来北京市的化学制浆已全部停产,城区四环路以内的造纸厂全部关停。在郊区,由于沿温榆河(该河经过昌平、顺义流向通州)要建成绿色长廊,沿北运河要发展运河旅游产业,而延庆县及门头沟区也都以旅游产业 The industrial policy formulated by the Beijing municipal government lists the general paper industry as a restricted development. According to this policy, chemical pulping in Beijing has been discontinued in recent years and all the paper mills within the Fourth Ring Road in the urban area have been shut down. In the suburbs, due to along the Wenyu River (the river after Changping, Shunyi flow Tongzhou) to build a green promenade along the Grand Canal to develop the canal tourism industry, and Yanqing County and Mentougou are also the tourism industry