淮河流域典型闸坝断面的生态综合评价

Integrated assessment of river ecosystems on typical dam & water gate sections in the Huaihe River

为分析淮河流域的闸、坝等水利设施对水生态环境的影响,采用多种生物指数法对淮河流域典型闸坝断面的生态系统现状进行了综合评价。结果表明,大多数水库处在生态稳定的健康状态;64%的所调查评价的河流生态系统处在不健康或亚健康状态。淮河干流水生态与水环境优劣的突变点在临淮岗,临淮岗以上的河段污染较轻;临淮岗以下河段污染较重。建议统筹考虑流域闸坝间水量联合调度与水污染源控制的共同作用,以使淮河流域水生态尽快得到恢复改善。

In order to investigate the influences of dams and water gates on the river ecosystems of the Huaihe River, the biological indexes were employed to assess the present status of river ecosystems on typical dam and water gate sections in the Huaihe River. The results show all reservoirs in the Huaihe River basin arein healthy status, and 64% of all studied river ecosystems is in sub-healthy condition or significant damage status. Additionally, the mutation spot of environment and ecosystems of the Huaihe River is found at the Linhuaigang Dam. The downstream of the Huaihe River after Linhuaigang Dam was polluted more seriously than the upstream. It is recommended that the union dispatch of water quantity and quality should be taken into account among dams and water gates in the whole Huaihe River systems to improve and restore the biological ecosystems of the Huaihe River.