| 东江中游河边植被多样性调查评价 | |
| 马晓波 ; 王兆印 ; 程东升 ; 邓家泉 ; MA Xiao-bo ; WANG Zhao-yin ; CHENG Dong-sheng ; DENG Jia-quan | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 河边植被 东江 多样性指数 夏侬评价指数 riparian vegetation index of diversity evaluation Shannon-Weiner index East River X826 |
| 其他题名 | Diversity evaluation of riparian vegetation in middle reaches of the East River |
| 中文摘要 | 植被多样性作为河流健康评价体系的指标之一,反映了植被稳定性对河流健康程度的影响。通过对东江惠州段泗湄洲的植被进行调查分析,采用夏侬-威纳(Shannon-Weiner)多样性和均匀度评价法,对河边植被多样性进行了评价,分析得出了不同高程植被群落的物种组成。亚热带地域河边植被发育较快,植被演替主要决定于淹没频率与高程。从低滩到高滩,植被类型从草本向灌木、最后向木本过渡。植被的多样性也随着高程的增加而提高,高滩植被相对完整、稳定,其生物多样性指数比温带地区的指数高。水位的变化对低滩植被多样性的影响很大。低水位时,低滩散布多种草本植物;而高水位时,部分物种淹没死亡,余下以禾本科和沙草科植物为优势种草本植物群落。; Vegetation diversity is one of the important indexes for evaluating the river health.The riparian vegetation in the middle reaches of the East River,Guangdong Province,is investigated and its diversity is analyzed with Shannon-Weiner index method.The riparian vegetation in the subtropical zone develops well and the evolution of vegetation community depends mainly on the flood frequency and flooding elevation.From floodplain to high floodplain,the vegetation community changes from grasses to shrubs and woods.The index of the vegetation diversity increases with the elevation of the land.The vegetation composition in high floodplain is relatively complete and stable,having the highest diversity index,which is even higher than those in temperate zone.The species composition of vegetation community of 4 groups at different elevations are presented and discussed.The vegetation diversity on low elevation floodplain is closely related to water level.Many grass species scatter on these flood plains as the water level is low.Some of the species are flooded and vanished during the flood season.Only some tall grasses survive with high tolerance of submergence.The dominant species belong to Gramineae and Cyperaceae.; 国家自然科学基金; 香港研究资助局联合资助(50318003) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/59384]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 马晓波,王兆印,程东升,等. 东江中游河边植被多样性调查评价[J],2010, 2010. |
| APA | 马晓波.,王兆印.,程东升.,邓家泉.,MA Xiao-bo.,...&DENG Jia-quan.(2010).东江中游河边植被多样性调查评价.. |
| MLA | 马晓波,et al."东江中游河边植被多样性调查评价".(2010). |
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