古红果榆抢救复壮技术体系探索

This article uses the restoration project of Ulmus szechuanica in Qixia Mountain as a foundation,and explores various technical means,such as survey and diagnosis,engineering restoration,and post-maintenance,to establish a technical system for restoring U.szechuanica and similar ancient trees in East China.The following results were obtained:(1)Engineering technology and plant protection measures can effectively restrain the declining growth of U.szechuanica and significantly improve its overall appearance.(2)By collecting breeding materials of this ancient tree,including seeds and nutrient materials,it is possible to produce offspring and preserve its genetic resources.(3)Maxent technology has demonstrated that the main suitable areas for U.szechuanica in East China are southern Jiangsu,southern Anhui,and northern Zhejiang,and it has also revealed its possible current survival areas,providing theoretical guidance for restoring similar tree species in these areas.(4)A"Technical Specification for the Rescue and Recovery of Ancient Ulmus szechuanica in East China"has been compiled to offer technical support for the protection and recovery measures of ancient red-fruited elm in this region.