辽河流域河流生态系统健康的多要素评价

考察了辽河流域的河流水质、生物学、物理栖息地状况,分析了辽河流域河流的生态系统健康.结果表明,辽河流域千流总体上处于工业活动剧烈地带,污染较为严重,而支流水质相对较好.其中,着生藻类、底栖动物与水质状况、物理栖息地环境质量之间具有相关性.随着水质的恶化,着生藻类多样性减少,底栖动物完整性遭到破坏;河流形态发生了改变,河流水生生物所依附的生存环境受损,表现出与河流水体质量相同的变化规律.

River Eco-system Health Assessment Based Multi-elements for Luan River Basin

The river eco-system includes three elements: aquatic organism, water quality, and physical habitat. According to the three elements, the river eco-system health in Luan Basin is analyzed. The results show that the main stream of Luan River is heavily polluted because of drastic industrial activity, while the water quality of tributary is relatively good. There are relationships between attached algae and quality of water and physical habitat, as well as relations between benthic invertebrate and quality of water and physical habitat. With the deterioration of water quality, the biodiversity of attached algae is decreased and the integrity of benthic invertebrate is destroyed. Furthermore, the river regime is changed and living environment of river aquatic organisms is also damaged, as in the same trend of water quality of the river.