摘要
海三棱藨草Scirpus mariqueter是中国特有盐沼植物,也是长江口淤涨型潮滩的典型盐沼先锋植物。在自然状况下,盐沼植被依照盐渍藻类—海三棱藨草—芦苇进行演替。近10年来,由于受长江口的高强度围垦、外来入侵种互花米草的大面积引种和长江中上游来沙量的锐减及全球气候变暖引起的海平面上升的迭加效应影响,海三棱藨草的面积呈加速缩减态势,如若不及时采取相应的保护措施,海三棱藨草将面临灭种的威胁,并由此带来长江河口滩涂湿地生态系统结构和功能的改变。为此,需对长江口滩涂围垦、互花米草种植促淤的人为措施进行深入研究,以保护好中国特有的盐沼植物海三棱藨草,维持长江河口湿地生态系统结构和功能的完整性,更好地发挥其湿地生态系统的服务功能。
Bulrush （Scirpus mariqueter Tang et Wang） is endemic to China,and pioneer plant in Yangtze River estuary tidal flat deposition.Under natural conditions,salt marsh vegetation evolves in the succession of saline algae-bulrush-reed.Over the past decade,due to superposition impacts of the high intensity of diking in the estuary of Yangtze River,large-scale growing of alien invasive species Spartina alterniflora,sharp reduction of sand sediment brought from the upper reaches of Yangtze River,and rising sea levels caused by global warming,the area of bulrush tended to reduce quickly.If protection measures are not taken in short time,the bulrush will face the threat of extinction,which will further cause changes in structure and functions of the estuarine wetland ecosystem.It is therefore necessary to carry out in-depth studies of human interventions such as diking and growing of Spartina alterniflora in the estuary tidal lands of Yangtze River,in order to protect the endemic salt marsh plant species,maintain the integrity of ecosystem structure and function in estuary Yangtze River,and give a better play of the wetland ecosystem services.
出处
《湿地科学与管理》
2011年第1期60-63,共4页
Wetland Science & Management
基金
上海市浦东新区环境保护和市容卫生管理局经费资助
关键词
长江口
湿地
海三棱藨草
盐沼植物
外来种
围垦
生态系统
Yangtze River Estuary
Wetland
Scirpus mariqueter
Pioneer plant
Alien plant
Diking
Ecosystem
