南京外秦淮河河岸带原生植被初步调查

对南京外秦淮河河岸带原生植被进行了初步调查.外秦淮河河岸带原生植被共有28科、50属、53种,其中漂浮植物4种,占7.55%,沉水植物1种,占1.89%,挺水和湿生植物13种,占24.53%,陆生草本和藤本植物24种,占45.28%,乔木和灌木11种,占20.75%.在概括外秦淮河自然环境和分析原生植被主要特征的基础上,提出在进行河岸带植被群落重建时应注重闸下段河岸带植被群落的重建,增加沉水植物、浮叶植物和观赏性植物的种植.另外,植被群落可按河道垂向的常水位以下区域、变化水位区域和洪水位以上区域来构建.

An preliminary Study on the Original Vegetation in Riparian Zone of Qinhuai River in Nanjing

The species, distribution and community of original vegetation in riparian zone of Qinhuai River in Nanjing were investigated. The results show that the original vegetation in riparian zone of Qinhual River covers 28 families, 50 genus, 53 species. There are four species of floating plants, one kind of submerged macrophyte, thirteen species of emergent macrophytes and wetland plants, twenty four species of herbages and lianas, eleven kinds of arbors and shrubs. They account for7.55%, 1.89%, 24.53%, 45.28%, 20.75% of the total species respectively. Based on the generalization of the nature environment of Qinhuai River and the analysis of the main characteristics of the original vegetation, it is presented that the vegetation communities should be reconstructed in the downstream riparian zone of Qinhuai River, especially the submerged macrophyte community and the floating- leaved maerophyte community. In addition, the vegetation communities should be reconstructed in the zone below the constant water level, between the constant water level and the flood water level, above the flood water level.