东港市獐岛附近典型海域滩涂生态修复效果评估

根据对东港市獐岛附近典型海域滩涂生态修复工程施工前后的调查结果,分析了修复区域滩涂生境资源变化情况。结果表明,施工后贝壳杂物密度较施工前明显降低,说明修复区域滩涂环境得到一定改善;施工后底栖生物的生物密度、生物量有所增加,说明生物资源正在进行有效恢复;施工后丰度、多样性指数、均匀度明显增大,优势度减小,说明施工后生物多样性更高且生物分布更均匀,所处的环境质量更好,生态修复工程呈现出一定效果。基于研究中发现的问题,提出相关建议。

According to the investigation results before and after the construction of ecological resoration project in typical sea area near Zhangdao island in Donggang,the paper analyzed the changes of beach habitat resources in the restoration area.The results showed the density of shell debris after construction was lower obviously than that before construction,it showed that the beath environment in the restoration area had been improved to a certain extent;the density and biomass of benthos increased after construction,it was indicated that biological resources were being effectively restored;the abundance,diversity index and uniformity increased significantly after construction,the dominance decreased after construction,it showed that the biodiversity was higher and the biological distribution was more uniform,the quality of living environment was better,the ecological restoration project showed a certain effect.Finally,based on the problems found in the study,some suggestions were put forward.