海南主要城市绿化植物区系研究

海南省海口市和三亚市近十年城市绿化发展速度较快,城市绿化植物种类多样,为了能够科学地利用这些植物服务于城市绿化建设,在两年的调查基础上,本文开展了城市绿化植物区系研究,揭示了城市绿化植物区系、性状和生态习性特点。研究结果表明,海口市与三亚市在城市绿化植物种类的选择方面把握住乡土植物与外来植物相结合、优势植物与物种多样性相结合和热带植物与非热带植物相结合,具有较强的热带性质和充分反映了热带滨海城市的特点的基本原则,取得了显著成绩,现已经发现有838种绿化植物,隶属145科,475属,其中有15种珍稀濒危植物,为生物多样性的有效保护开辟了新的路子;但藤本植物与耐阴植物运用较少,分别为46种和74种,影响了空中和立体绿化建设的发展。同时必须指出的是,海口市与三亚市在绿化树种选择方面,表现出过高的相似性,这对发展海南省具有南北特性的城市不利,应引起注意。

The study of plant flora for urban greening in Hainan

The speed of urban greening development is very fast and many plant species have been used for greening over the past ten years in Hainan. The characteristics of plant flora, morphological and ecological properties are studied for using these plant species scientifically based on a two-year investigation. The study results show that there have been great achievements in urban greening featuring strong tropical and coastal regions,based on the principle of combining indigenous plants with foreign plants, plant dominance with biodiversity,topical plants no-tropical plants in Haikou and Sanya. Now, 838 plant species, 145 families and 475 genus have been investigated. 15 species of protective plants are recorded in Haikou and Sanya. However, it is pointed out that the development of construction in space is delayed for the use of only 46 species of liana plants and 28 species of shade plants. What is more,high similarity in selecting plant species for greening between Haikou and Sanya must be decreased, because such a similarity is not good for building unique cities.