This study uses benthic macroinvertebrates as indicators to analyze the variational characteristics of benthic biodiversity under persistent environmental pressures, such as rapid economic and population growth, large-scale urbanization, rapid tourism development, intensified port activities, and extreme human disturbances such as reclamation and dredging, in the Xiamen sea area during 1980–2016. From 1980 to 1990, benthic biodiversity in the area generally remained high, with a species richness of 13, individual abundance of 584 ind/m², biomass of 79.58 g/m², and a Shannon diversity index (H′) of 3.26. Under persistent environmental pressure, this biodiversity significantly declined from 2005 to 2007, but improved during 2013–2016 as a result of measures such as establishing reserves, prohibiting aquaculture, and controlling the inflow of pollutants. Under the extreme disturbance caused by reclamation, the average species richness, individual abundance, and H′ of the Tong'an Bay (TB) and the Dadeng sea area (DS) declined considerably. The DS closer to the open sea experienced a benthic biodiversity decrease (25.2% on average) that was significantly less than the decrease in the semi-enclosed TB with a smaller area (55.8% on average), which stopped declining after the sharp drop in the first year after reclamation. This contrasts with TB, where benthic biodiversity six years after reclamation remained considerably lower than before reclamation. However, the decrease in the local total species richness caused by reclamation can be recovered, regardless of whether it is in the open DS or the semi-enclosed TB. Under the extreme disturbance of dredging, individual abundance and biomass in the dredging areas were significantly lower than the average for the study area in 2005–2012. However, following the completion of dredging in 2012, benthic biodiversity noticeably increased in 2013–2016 to higher than the average of the area, indicating that dredging could improve the quality of benthic habitats and increase benthic biodiversity in sea areas with heavy sedimentation and pollution.

这项研究使用底栖大型无脊椎动物作为指标来分析在持续的环境压力下底栖生物多样性的变化特征，这些环境压力包括快速的经济和人口增长，大规模的城市化，快速的旅游业发展，密集的港口活动以及极端的人为干扰（例如开垦和疏ging）在1980-2016年期间位于厦门海域。从1980年到1990年，该地区底栖生物多样性总体上保持较高水平，物种丰富度为13，个体丰度为584 ind / m ²，生物量为79.58 g / m ²，香农多样性指数为（H'）的3.26。在持续的环境压力下，该生物多样性在2005年至2007年间显着下降，但在2013–2016年期间由于采取了诸如建立保护区，禁止水产养殖和控制污染物流入等措施而得到改善。在开垦引起的极端干扰下，平均物种丰富度，个体丰度和H同安湾（TB）和大登海域（DS）的'下降幅度很大。靠近公海的DS的底栖生物多样性减少（平均25.2％），明显小于面积较小的半封闭型TB的减少（平均55.8％）。开垦后的第一年。与此相反，结核病在填海后六年的底栖生物多样性仍然大大低于填海前的水平。但是，无论是在开放式DS还是在半封闭式TB中，都可以恢复由开垦引起的局部总物种丰富度的下降。在疏ed的极端干扰下，疏–区的个体丰度和生物量显着低于2005-2012年研究区的平均水平。然而，