%0 Journal Article
%T Vegetation and plant species richness on six pre-islands, the Three Gorges Reservoir<br>三峡水库岛屿成岛前的植被特征与物种丰富度
%A Gaoming Xiong
%A Zongqiang Xie
%A Jiangshan Lai
%A Guozhen Shen
%A Changming Zhao
%A <br>熊高明
%A 谢宗强
%A 赖江山
%A 申国珍
%A 赵常明
%J 生物多样性
%D 2007
%I Science Press
%X We studied the vegetation on six pre-islands (land areas which will become islands as a result of flooding) in the Three Gorges Reservoir with a focus on plant species richness for each community. A total of 28 community types were found on these pre-islands,comprising of 12 hassocks,7 shrubs,and 9 forests. The results showed that natural vegetation was characterized by intense degradation,implied low vegetation cov-erage,restricted distribution of forests,low community diversity and high ratio of ruderal community types. The species richness of wild vascular plants on the six pre-islands was 126,157,175,189,242,and 254,re-spectively. The average species richness was 42.9 for forest,15.96 for shrub,and 17.89 for hassock commu-nities. In all hassock communities,species richness was high in ruderals but was low in typical degraded hassocks. Species richness was generally low in all shrub communities. In the process of secondary succes-sion from conifer-broadleaf forest to broadleaf forest,species richness fluctuated remarkably. Exotic plants significantly impacted the landscape,resulting in degradation of the natural vegetation. These pre-islands are valuable for scientific research,we suggest establishing some nature reserves on them.
%K the Three Gorges Reservoir
%K island
%K vegetation
%K plant species richness
%K island reserve<br>三峡水库
%K 岛屿
%K 植被
%K 物种丰富度
%K 岛屿保护区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=284A3BE2D09272C2DA95716775015427&aid=690C230EF36B37CE&yid=A732AF04DDA03BB3&vid=23CCDDCD68FFCC2F&iid=94C357A881DFC066&sid=FF58680609C9D068&eid=1918ADDC93A85779&journal_id=1005-0094&journal_name=生物多样性&referenced_num=3&reference_num=26