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Assessment of macrobenthic community function and ecological quality after reclamation in the Changjiang(Yangtze)River Estuary wetland

引用

Acta Oceanologica Sinica 2022年第11期41卷 96-107页

作者： Yinying Huang Yingying Huang Xinglin Du Yiming Li Jiangtao Tian Qiang Chen Youhui Huang Weiwei Lv Ying Yang Zhiquan Liu Yunlong Zhao State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China School of Life Science East China Normal UniversityShanghai 200241China School of Life and Environmental Sciences Hangzhou Normal UniversityHangzhou 310018China Shanghai Runzhuang Agricultural Science and Technology Co. LtdShanghai 201400China

An ecological optimization project(semi-closed reclamation project)was implemented to control the invasion of Spartina alterniflora,and optimize the habitat of the Chongming Dongtan wetland,in the Changjiang(Yangtze)River *** project implementation,a macrobenthic ecological survey was conducted in a natural tidal flat and a semi-closed reclamation restoration area within the Chongming Dongtan wetland from 2019 to *** with historical data before reclamation,findings showed that the groups,numbers,and species diversity of the macrobenthos increased significantly,and the ecological optimization project resulted in good ecological *** addition,compared to the natural tidal flat,the number of collected macrobenthic phyla,and the macrobenthic density and biomass were significantly lower in the restoration ***,the biodiversity index and functional redundancy of natural tidal flats were generally higher,indicating that the community composition and function of natural tidal flats were relatively more *** though the species composition differed between a number of restoration areas and natural tidal flats,there was no difference in functional diversity,indicating that the effect of restoring ecological functions in restoration areas was *** them,the biodiversity and functional redundancy of Site S2 were significantly reduced,and the ecosystem function was extremely *** heterogeneity,vegetation community and decreasing salinity were the main factors that affected the ecological functions of *** ecological quality was also evaluated;the Transects N3 and N4 showed good *** overall ecological quality of the restoration area was generally high,but that of Site S2 was poor and that of Site S2E was merely good,which was mainly due to modifications of the ecological function of *** is suggested that reeds mowing and freshwater species release should be adopted in restoration area

关键词： macrobenthos ecological optimization project semi-closed reclamation community restoration functional diversity ecological health

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