【摘要】 在 1999年和 2 0 0 0年分别对一贝虾混养池的进水区 ,静水区和出水区的底栖动物进行调查 ,共得底栖动物 15种 ,其中 3种为优势种 ,栖息密度以多毛类占优势 ,采用综合生物污染指数评价水体质量显示该虾池水质有机污染严重 ,尤其是静水区 .另外两年的结果显示 2 0 0 0年水质有污染加重的趋势 ,对于污染来源和预防及底栖动物结构改变的原因本文也作了探讨更多还原

【Abstract】 In 1999 and 2000,the investigation on zoobenthos was carried out respectively in different sections of a shrimp culturing pond, which located in water-in, water-standing and water-out. Fifteen species of zoobenthos were observed and three of them were dominant in their inhabiting density. The largest density of zoobenthos was polychaete, which reached 115 ind/m 2. Using the bio-index which integrated Beck-index, Chandler Score system, Shannon-wiener-index and Simpson-index, we assessed the water quality of the pond. Results indicated that water in this pond was polluted seriously, especially in the section of water-standing. The water quality became worse in the second year. How to prevent water from pollution was also discussed in this paper.更多还原