郑州市公园绿地木本植物物种多样性研究

Study on Species Diversity of Woody Plants in Park of Zhengzhou City

采用典型抽样法,对郑州市公园绿地木本植物的树种组成、植物来源、物种多样性指数等进行了调查统计和比较分析。研究表明:郑州市公园绿地内木本植物种类比较丰富,共有54科103属173种,其中,郑州本地种29种,占总数的16.8%,国内引进种110种,占总数的63.5%,国外引进种34种,占总数的19.7%。郑州市不同类型公园绿地乔木物种丰富度稍大于灌木。Simpson多样性指数和Shannon-Wiener多样性指数表现出相同趋势,乔木层Simpson多样性指数均在0.5以上,乔木的多样性指数大于灌木。Pielou均匀度在不同类型的公园绿地之间差别不大,集中在0.70～0.86之间,乔木均匀度仍大于灌木。

The woody plants of different park in Zhengzhou city were studied in this paper. The typical sampling method was used in this survey. Then the composition of plant community, the origination of plants and the species diversity index were analyzed and compared. The results showed that there were 54 families, 103 genera and 173 species. Among them, 29 species were local plants, which account for 16.8%. 110 species were introduced from other regions of China, which account for 63.5%. 34 species were introduced from foreign countries, which account for 19.7%. The abundance index of the tree layer was higher than the shrub layer. The Simpson index and the Shannon-Wiener index showed similar trends, and the Simpson index was higher than 0.5 in tree layer. But the Simpson index of the tree layer was higher than the shrub layer. The range of Pielou index of tree layer was 0.70-0.86, and the Pielou index of tree layers was higher than the shrub layers.