秦山核电站运行后对邻近海域生态环境及其水质影响评价

通过对秦山核电站运行前后相隔近７ ａ 的工程区邻近海域四季度月生物与非生物环境生态各要素的两次调查分析，进行了Ⅰ期工程运行以来海域生态环境及水质状况的影响评价。结果认为，秦山海域具典型强潮河口湾生态特征，营养盐丰富，而生产力低下。潮汐、径流和湾外海水入侵是导致海洋环境要素季节和年际变化并直接影响海洋生物结构的主要因子。水体富营养化指数上升是沿岸工业和生活污水大量排放的结果。核电站运行中冷却水的热排放由于杭州湾特殊的海底地形和强潮混合的水体环境对附近水域的热升温效应不明显。秦山Ⅰ期工程运行以来对海域生态环境和水质变化未见明显影响

Assessment of effects of Qinshan nuclear power station on the ecological environment and water quality of its adjacent waters after running

Based on the data of biological and nonbiological factors collected respectively from 1989 to 1990 and from 1995 to 1996 in the waters nearby the Qinshan nuclear power station, the ecological environment and water quality are analyzed and assessed in the paper. The results show: (a) the survey area has the typical ecological characteristics of the high tidal range estuary-rich nutrients and low biological productivity, (b) tide, runoff and offshore seawater intrusion are the key factors which resulted in seasonal and annual changes of the various biological and nonbiological factors, (c) the rising of seawater eutrophication index results from enormous amount of the discharges form the industrial and urban sewage, (d) because the survey area is located at a high tidal range estuary, thermal effluent from the cooling system does not induce to the significant temperature changes, (e) the first stage project of Qinshan nuclear power station has not made a notable impact on the ecological environment in the area since running.