武汉东湖生态旅游风景区植物资源现状及其类型

研究目的在于分析武汉东湖生态旅游风景区植物资源类型和构成特点，探讨人工引种对植物资源成分的影响。通过实地考察、标本鉴定和查阅资料，统计该景区现有维管植物142科453属819种。其中，蕨类17科、27属、33种，裸子植物7科、16属、32种，被子植物118科、410属、754种。按性质和用途，划分为观赏植物、古大树木、珍稀濒危及国家重点保护植物、药用植物、材用植物、油脂植物、芳香植物、饲用植物、纤维植物9大类。对各种类型的资源植物进行了统计分析，列举了一些具有代表意义植物种类。记录了外来入侵植物的种类和分布，分析了人工引种对景区植物的生活型及各类型植物资源比例的影响，以及该景区植物资源在武汉地区所占地位。结果表明，该景区植物资源丰富，面积仅占武汉市的0.96％，植物种类却达到全市48.75％。木本植物比例相对较低，草本及藤本高于武汉全市的平均水平。在自然分布植物中药用植物所占比重最大，而在人工引种植物中，观赏植物所占比重最大。针对园林观赏植物的引种，古树名木和珍稀植物的保护，以及入侵植物风险控制，提出了具体的建议。〖

CURRENT STATUS AND TYPES OF PLANT RESOURCESIN EAST LAKE ECO TOURISM SCENIC SPOT,WUHAN

The aim of this research is to describe the types and compositions of plant resources in East Lake Eco tourism Scenic Spot,Wuhan,and the effects of cultivated species on plant compositions.Through field survey,identification of specimens and collection of the data,we recorded 819 species of vascular plants which belong to 453 genera,142 families,including 33 species of pteridophyte(27 genera,17 families),32 species of gymnosperm(32 genera,16 families) and 754 species of angiosperm(410 genera,118 families).According to the characters and uses,these plants were divided into 9 types:ornamental plants,old trees,rare and endangered plants and wildlife under national special protection,medicinal plants,timber plants,oil plants,aromatic plants,forage plants and fiber plants.All the plants were analyzed,some representative species were listed,and alien invasive plants were recorded.We also discussed the influence of cultivated species on plants' life form and compositions,and the status of plant resources in Wuhan.The results show that the Scenic Spot takes 48.75％ of the total species of Wuhan with only 0.96％ of its area.The proportion of woody plants is relatively low,with that of herbs and vines above the average level of the city.The medicinal plants account for the largest proportion of native plants,while the ornamental plants account for the largest proportion of cultivated plants.There are also some specific proposals to introduce ornamental plants,protect old trees and rare and endangered plants,and control invasive plants.