CAJ | 학술논문

2011年6-8月采集江阴市6条河流的浮游藻类样品，分析其群落结构及物种多样性，并利用多样性指数、指示性类群和硅藻商对水质进行了生物学评价。共检出浮游藻类6门137属种，平均生物量2?38 mg/L，蓝藻、绿藻、硅藻分别占72?3％、10?2％和8?41％。 Shannon-Wiener多样性指数、Margalef丰富度指数和 Pielou均匀度指数的变幅分别为3?34～3?59、4?75～6?40和0?73～0?75，硅藻商变幅为8?3～16?4。多样性指数评价结果表明，水体处于轻或无污染状态；指示性浮游植物类群和硅藻商评价结果表明，河流处于α中污带-β中污滞-多污滞。相关分析表明，Shannon-Wiener多样性指数与理化水质因子不显著相关，与悬浮物SS显著负相关，与总有机碳显著正相关。研究认为，指示性浮游植物类群或硅藻商更适于作为城市河流水质评价的生物指标。
2011년6-8월채집강음시6조하류적부유조류양품，분석기군락결구급물충다양성，병이용다양성지수、지시성류군화규조상대수질진행료생물학평개。공검출부유조류6문137속충，평균생물량2?38 mg/L，람조、록조、규조분별점72?3％、10?2％화8?41％。 Shannon-Wiener다양성지수、Margalef봉부도지수화 Pielou균균도지수적변폭분별위3?34～3?59、4?75～6?40화0?73～0?75，규조상변폭위8?3～16?4。다양성지수평개결과표명，수체처우경혹무오염상태；지시성부유식물류군화규조상평개결과표명，하류처우α중오대-β중오체-다오체。상관분석표명，Shannon-Wiener다양성지수여이화수질인자불현저상관，여현부물SS현저부상관，여총유궤탄현저정상관。연구인위，지시성부유식물류군혹규조상경괄우작위성시하류수질평개적생물지표。
To study the community structure and species diversity of phytoplankton in Jiangyin, samples for 6 main rivers were collected from June to August, 2011. Diversity index, evenness index, indicative groups and diatom quotient were calculated and used to access water quality. 137 taxa, belonging to six phyla, were observed. The average biomass was 2?38 mg/L, including Cyanobacteria (72?3%), Chlorophyta (10?2%) and diatom (8?41%). Shannon-Wiener diversity index, Margalef abundance index, Pielou evenness index and diatom quotient were in the range of 3?34-3?59, 4?75-6?40, 0?73-0?75 and 8?3-16?4 respectively. The diversity indexes indicated that the rivers were lightly polluted, while the evaluation result based on diatom quotient and indicative phyla was α, β-type moderate-heavy polluted type. Shannon-Wiener diversity index was negatively correlated with suspended solids and positively with TOC, while has no evidently relationships with chemical indicators. Therefore, diatom quotient and indicative phyla were much more suitable as bio-indicators for accessing the water quality of urban rivers.