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Aimed to reveal impact of sea reclamation on zoobenthic community in adjacent area, Caofeidian in north China was chosen as a case in this paper. A total of 54 sample points were set in adjacent area of reclamation in 2004, 2005, 2007 and 2010, which stand for beginning, midway and ending phase of sea reclamation project. Community density, biomass, richness index and biodiversity index were used to describe changes of zoobenthic community in the course of sea reclamation. It is found that sea reclamation reduced the density of zoobenthic community in adjacent sea area with density value in 2010 being 16.15% of that in 2004. The biomass of zoobenthic community in adjacent sea area had no obvious change, but biomass of sample points near the dam was bigger than that in farther sample points. Sea reclamation also reduced species richness index and biodiversity index of zoobenthic community in adjacent area. The species richness index decreased from 39 in 2004 to 23 in 2010, while the Shannon-Weiner diversity index H′ decreased from 2.89 in 2004 to 1.55 in 2010. This impact implied that sea reclamation had changed sediment environment partly, so the structure of zoobenthic community had not changed completely.

IMPACT OF SEA RECLAMATION ON ZOOBENTHIC COMMUNITY IN ADJACENT SEA AREA: A CASE STUDY IN CAOFEIDIAN, NORTH CHINA