辽吉黑三省三北防护林体系建设学术研讨会会议纪要为总结交流辽宁、吉林、黑龙江三省在三北防护林体系建设中的先进技术和经验，推动和促进三北防护林体系三期工程建设持续、快速、健康发展，更好地发挥三北防护林在国民经济和社会发展中的生态、经济和社会效益，辽吉黑三... Summary of the Symposium on the Construction of the Three North Shelterbelt System in the Three Provinces of Liaoning and Jilin Province To sum up the exchange of advanced technologies and experience in the construction of the Three North Shelterbelt system in Liaoning, Jilin and Heilongjiang provinces, and to promote and promote the sustained and rapid development of the third phase of the Three-North Shelterbelt System , Develop healthily and give better play to the ecological, economic and social benefits of the Three North Shelterbelt in the national economy and social development.