| 摘要: |
| 以杭州湾南岸为例,探讨互花米草(Spartina alterniflora) 潮滩底质的粒度及其分布特征。结果表明杭州湾南岸互花米草潮滩底质由黏土质粉砂、粉砂、粉砂质砂和砂质粉砂组成;从杭州湾口向湾内,互花米草潮滩底质中值粒径逐渐变粗,分选性变好;从低潮滩向高潮滩,互花米草潮滩底质的中值粒径逐渐变小,分选性变差。互花米草盐沼的形成使得潮滩底质粒度及其分布特征产生明显改变。 |
| 关键词: 互花米草(Spartina alterniflora) 潮滩 底质 粒度特征 杭州湾南岸 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(40701006) ;浙江省自然科学基金项目( Y505032) ;宁波市自然科学基金项目(2006A610077) |
|
| Granularity analyses of superficial sediments of Spartina alterniflora flat on south coast of Hangzhou Bay |
|
|
| Abstract: |
| Using south coast of Hangzhou Bay as a case study, the article researches on the granularity distribution characteristic of superficial sediments on Spartina alterniflora flat. The results show that the sediments types on the flat are composed of clay-salt, salt, salt-sand and sand-salt. From Hangzhou Bay mouth to inside, median diameter of superficial sediments becomes greater while sorting become fine. From low flat to high flat, median diameter of superficial sediments increases gradually, but sorting becomes worse. The formation of S. alterniflora salt marsh has a great influence on depositional characteristic and evolvement process of topography on tidal flats. |
| Key words: Spartina alterniflora flat superficial sediment granularity south coast of Hangzhou Bay |
