摘要
运用水文地貌理论,选择湿地的坡度、平均宽度、土壤质地和表面糙率四个物理指标,以渤海湾潮间带为研究案例,建立了潮间带湿地稳定岸线功能评价模型。分析了1954年到2000年间渤海湾潮间带湿地岸线的动态变化,利用潮间带湿地稳定岸线功能评价模型进行了评价。结果表明:以20世纪50年代为基准年,稳定岸线功能指数从0.9下降至0.75。围海造地和滩涂养殖导致湿地面积减少,宽度下降,是其功能退化的主要原因。运用本模型可以快速地反映一定区域的海岸带湿地生态退化程度。
The shore stabilization is important to keep the functions in the inter-tidal wetland to maintain the shorelines against the erosion and subsidence,and the significant factor for the ecosystem health.Based on the theories of hydrograph,four indices of tidal wetland：slope,average width,soil texture,surface roughness are selected to establish an assessment model of shoreline stabilization function in the inter-tidal wetland.The inter-tidal wetland in the Bohai bay as an example,the changes of the intertidal wetland from 1954 to 2000 are analyzed,and this assessment model is used to evaluate the shoreline stabilization function.The results showed that the shoreline stabilization functions in the inter-tidal wetland in the Bohai bay have degenerated from 0.9 to 0.75 during 1954 and 2000（taking 1954 as benchmark） and the shore enclosure and mari-culture are the principal reasons.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2010年第4期594-598,共5页
Marine Environmental Science
基金
国家水体污染控制与治理科技重大专项(水专项)--流域水生态功能评价与分区技术(2008ZX07526-001)
关键词
潮间带湿地
稳定岸线功能
退化评价
渤海湾
intertidal wetland
function of shoreline stabilization
degradation Assessment
Bohai bay
