CAJ | 학술논문

[目的]研究太湖地区不同水生植被生境下环棱螺的生存状况，为该地区环境监测提供合适的评价指标。I方法1在太湖虞望河西附近生态建设工程区的挺水植物区、沉水植物区和无植物裸底区3种水生植被生境中放养等密度的环棱螺，测定环棱螺在蓝藻爆发阶段和非蓝藻爆发阶段的存活率、超氧化物歧化酶活性、丙二醛含量和P450酶浓度，并分析所测指标与湖水氨氮含量的相关性。[结果]在蓝藻爆发阶段，挺水植物区、沉水植物区和无植物裸底区环棱螺的存活率分别为0％、55．2％和89｜3％，SOD活性表现为先降后升，MDA与SOD变化趋势相反，P450酶则不断下降；在非蓝藻爆发阶段，3种生境环棱螺的存活率分别为90．6％、98．8和99．5％，SOD活性先降后升，MDA则为先升后降，P450酶的变化没有规律。2个阶段中环棱螺SOD活性与湖水氨氮含量均显著负相关，MDA只在非蓝藻爆发期与氨氮含量显著正相关，P450酶与氨氮含量无显著相关关系，这表明用环棱螺评价水生植被对底栖动物的影响时，P450酶活性并不是合适的指标。[结论]该研究结果表明太湖地区的环棱螺体内SOD活性可以作为评价生境的指标，MDA可作为非蓝藻爆发阶段检测氨氮含量的指示物，但P450酶不能作为该地区3种生境环境污染早期诊断与预警的指标。
[목적]연구태호지구불동수생식피생경하배릉라적생존상황，위해지구배경감측제공합괄적평개지표。I방법1재태호우망하서부근생태건설공정구적정수식물구、침수식물구화무식물라저구3충수생식피생경중방양등밀도적배릉라，측정배릉라재람조폭발계단화비람조폭발계단적존활솔、초양화물기화매활성、병이철함량화P450매농도，병분석소측지표여호수안담함량적상관성。[결과]재람조폭발계단，정수식물구、침수식물구화무식물라저구배릉라적존활솔분별위0％、55．2％화89｜3％，SOD활성표현위선강후승，MDA여SOD변화추세상반，P450매칙불단하강；재비람조폭발계단，3충생경배릉라적존활솔분별위90．6％、98．8화99．5％，SOD활성선강후승，MDA칙위선승후강，P450매적변화몰유규률。2개계단중배릉라SOD활성여호수안담함량균현저부상관，MDA지재비람조폭발기여안담함량현저정상관，P450매여안담함량무현저상관관계，저표명용배릉라평개수생식피대저서동물적영향시，P450매활성병불시합괄적지표。[결론]해연구결과표명태호지구적배릉라체내SOD활성가이작위평개생경적지표，MDA가작위비람조폭발계단검측안담함량적지시물，단P450매불능작위해지구3충생경배경오염조기진단여예경적지표。
[Objective] The paper was to investigate the survival conditions of Bel- lamya sp. in different aquatic vegetation habitats in Taihu area, so as to provide suitable evaluation indexes for environmental monitoring in the area. [Method] Equal density of Bellamya sp. was placed in 3 aquatic vegetation habitats （emerged plant area, submerged plant area and non-plant area） in ecological engineering construc- tion area near the west of Wangyuhe in Taihu, the survival rate, SOD activity, MDA content and P450 enzyme activity of Bellamya sp. during outbreak and non-outbreak stage of cyanobacteria were determined, and the correlation between these indexes and ammonia nitrogen content of lake water was also analyzed. [Result] During the outbreak stage of cyanobacteria, the survival rates of Bellamya sp. in emerged plant area, submerged plant area and non-plant area were 0%, 55.2% and 89.3%, re- spectively, SOD activity first decreased and then increased, the change trend of MDA content was opposite with SOD change trend, P450 enzyme activity continu- ously decreased. During non-outbreak stage of cyanobacteria, the survival rates of Bellamya sp. in 3 habitats were 90.6% ,98.8 and 99.5%, respectively, SOD activity first decreased and then increased, MDA content first increased and then decreased, the changes of P450 enzyme activity were not regular. SOD activity of Bellamya sp. during 2 phases had significantly negative correlation with ammonia nitrogen content of lake water, MDA content had significantly positive correlation with ammonia nitro- gen content of lake water only during non-outbreak stage of cyanobacteria, P450 enzyme activity has no significant correlation with ammonia nitrogen content. This in- dicated that when Bellamya sp. was used to evaluate the impact of aquatic vegeta- tion on benthic animals, P450 enzyme activity was not the suitable indicator. [Conclusion] SOD activity in muscle tissue of Bellamya sp. could be used as the indica- tor for evaluation of habitat, MDA could be used as indicator for detection of am- monia nitrogen content during non-outbreak stage of cyanobacteria, P450 enzyme could not be used as the indicator for early diagnosis and early warning of environ- mental pollution in 3 habitats in Taihu area.