黄河三角洲湿地水生维管束植物资源及其区系研究

在参照相关资料的基础上,结合实地调查,对黄河三角洲湿地水生维管束植物种类、生态类群及其区系特征进行了分析。结果表明,黄河三角洲湿地共有水生维管束植物64种,隶属25科40属,含3种以上的9个较大科构成了区系的主体,共24属44种,占总属数的60%和总种数的68.75%,其中以挺水植物为主要生态类群,共有32种,占总种数的50%;区系中单种属多,属的分化程度较高;从分布区类型来看,世界分布属最多,温带分布属次之,热带分布属亦较多,区系总体表现出明显的温带特征,并具有向亚热带过渡的特点。

Studies on Resource and Flora of Aquatic Vascular Plants in Wetland of Yellow River Delta

Based on some correlated reference data and field investigations,the resources,ecological groups and flora characteristics of aquatic vascular plants in wetland of Yellow River delta were studied.The results indicated that there were 64 species of aquatic vascular plants in wetland of Yellow River delta which belonged to 25 families and 40 genera.9 more important big families with 3 or more than 3 species were the principle parts of all the aquatic vascular plants,occupied 60% of total genera and 68.75% of total species.Emerged plants were the main ecological groups,occupied 50% of total species.There were many genera with single specie,which showed the flora was highly differentiated in genera level.In view of the areal types,most plants genera belonged to cosmopolitan widespread type,followed by temperate-areal type and tropic-areal type which also was quite a lot.And the region generally exhibited obvious temperate characteristics and equipped features of transitioning to sub-tropical zone.