植冠种子库生态功能对铁路沿线沙区段植被恢复的重要性

The Important Ecological Function of Canopy Seed Bank in Vegetation Restoration Along with the Railway Line of Sand Dune Areas

从铁路风沙危害的特点及植物防沙应用实例2个方面分析了植被恢复对防治铁路沙害的作用,并从植冠种子库的生态功能及植冠种子库对沙区铁路植被恢复的重要性2个方面评述了植冠种子库对沙区铁路植被恢复的意义。指出铁路沿线沙区段的植被恢复对于铁路的安全畅通至关重要,沙生植物植冠种子库的生态功能对铁路沿线沙区段植被恢复的意义不容忽视。并提出应针对铁路沿线的沙生植物植冠种子库,在种子脱落动态、不同尺度上植冠种子库对土壤种子库时空格局的影响、种子库对种子萌发和幼苗出土的调节作用等方面展开相关研究,从植冠种子库角度揭示铁路沿线沙区段沙生植物的特殊繁殖适应对策,分析其对铁路沿线沙区段植被恢复的生态功能,探讨植冠种子库所体现的生态功能在铁路建设植物防沙措施中的意义和价值,为沙区铁路建设的沙害防治提供科学依据。

This paper discussed the role of vegetation restoration in prevention and control on sand hazard along with railway line by presenting the characteristic of sand hazard and application example of plant sand-control, and discussed the ecological function of canopy seed bank to vegetation restoration along with railway line. And it concluded that vegetation restoration was very important to the safety and the smooth operation of the railway line in sand dune areas, and the ecological function of canopy seed bank were playing an important role in vegetation restoration along with the railway line of sand dune areas. The paper suggested that the studies on the vegetation restoration along with the railway line of sand dune areas should be concerned on the investigation of seed dispersal dynamic of canopy seed bank, and the influences of canopy seed bank on seed bank pattern, germination and seedling emergence. The objective was to explore the ecological functions of canopy seed bank in vegetation restoration along with railway line, and to discuss the importance of the function to plant sand-control of railway construction in sand dune areas.