镇江滨江湿地受损植被诊断及修复研究

镇江滨江湿地沿长江岸线,依附镇江市市北,是由江水所携泥沙常年淤积而成。湿地内植被茂盛,物种丰富。但近年的污染排放及渔民围网捕鱼,植被破坏严重,湿地生态功能遭到削弱。研究通过对位于大东沟排污口的受损植被与另一处于相同演替阶段的健康植被比较,识别受损植被的致损因子,并分析其对群落结构及其演替进程的影响。结果显示,污染排放和当地渔民的围网捕鱼是导致大东沟片植被处于中等程度退化的主要因子。在植被的修复中,基于次生演替理论和自设计理论,采用工程技术和优势种栽培技术相结合原则,实现污染控制和加速植被的恢复。

Diagnosis and Restoration of Degraded Plant Community in Zhenjiang Waterfront Wetland

The waterfront wetland at north of Zhenjiang City and along the Yangtze River is formed from the sediments of mud and sand taken by the Yangtze River.However,in recent years,the plant communities of the wetland were destroyed badly and ecologic functions were impaired partly resulted from contamination discharge and fishing actions.By taking a piece of wetland linking to sewage outfall of Dadonggou as example,by comparing the plant communities with other piece of wetland which is the same at succession stag...