徐州潘安湖湿地公园植物多样性调查与分析

Investigation of the Plant Diversity in Panan Lake Wetland Park

在实地调查的基础上,对徐州潘安湖湿地公园的植物多样性进行分析。结果表明,公园共有植物97科227属353种(含变种),乔灌草的比例为1.24∶1.00∶0.91,水生植物种类相对较少。木本植物中常绿树种与落叶树种的种类比为3.36∶6.64,数量比为5.15∶4.85,总体构成基本合理,但常绿乔木应用不足;乡土植物与外来植物的种类比为7.18∶2.82,以乡土树种为主,利于公园地方特色的体现。公园植物多样性指数和丰富度指数均处于较高水平,不同景区间存在一定差异。部分景区植物均匀度指数较低,不利于植物景观的丰富和生态系统的稳定。建议增加水生植物的种类和种植面积;对于植物均匀度指数较低的景区,增加优势树种以外的其他树种的应用。

Based on the field investigation, the plant diversity of Panan Lake Wetland Park in Xuzhou was analyzed . The results showed that there were 97 families,227 genera and 353 species （including varieties） in the park. The proportion of trees,shrubs and herbs was 1.24 ： 1.00 ： 0.91 ,the species of aquatic plants was relatively small. The species proportion of evergreen trees and deciduous trees in woody plants was 3. 36 ： 6.64 and the quantity proportion was 5.15 ： 4.85,which showed that the composition was basically reasonable but the application of evergreen trees was not enough. The proportion of native plants and exot ic plants was 7.18 ： 2.82 ,the native tree was main green plants which were conducive to the embodiment of the local characteristics of the park. The plant diversity index and richness index in the park were all in a high level that reflected the diversity of the plants. There were some differences in plant diversity among different scenic spots. The evenness index of plants was low in some spots which was not conducive to the richness of plant landscapes and the stability of ecosystems. It was suggested that the aquatic plants should be increased and the application of other tree species besides dominant tree species should also be increased in the scenic spots with lower evenness index.