洱海入湖河流白鹤溪健康状况评价

Health Evaluation of Baihe Inflow River of Erhai Lake

为准确评价洱海入湖河流白鹤溪的健康状况,综合考虑河流水文、河岸带状况、河流形态、水质、水生生物、景观旅游六个方面,构建了白鹤溪河流健康评价指标体系,并确定了评价标准,采用层次分析法与熵权法相结合的形式,确定了各指标的权重,随即采用综合指数评价法评价了白鹤溪8个监测断面的健康状况。结果表明,白鹤溪整体健康状况处于亚健康与轻微病态之间。8个监测断面中箐口(B1)和古城段(B4)断面的综合健康指数最低,处于轻微病态与病态之间,其他监测断面均处于轻微病态与亚健康之间。白鹤溪箐口以上河道取水、旅游污染是影响白鹤溪河流健康的重要因素。水质指标得分与河流综合健康指数显著相关,显著水平为0.003。该评价体系可为其他类似入湖河流健康评价提供参考。

To evaluate the health of the Baihe Inflow River of Erhai Lake accurately,an index system and evaluation criteria were established by considering the aspects of river hydrology,riparian zone status,river morphology,water quality,aquatic organisms and scenic tour.Combination of analytic hierarchy process and entropy method was employed to determine the weight of each index.Then,the integrated index evaluation method was adopted to evaluate the health status of eight monitoring sections in Baihe River.The results show that the Baihe River was in the sub-healthy and slightly morbid state.The integration health index of Qingkou B1 and Old Town section B4 were in the slightly morbid and morbid state,which were the worst of eight monitoring sections.The other monitoring sections were in the subhealthy and slightly morbid state.Taking water from river and travel pollution were the most important factors influencing the river health.Water quality index ratings and river integration health index was significantly correlated.The significant level was 0.003.The evaluation system can be utilized as a reference to evaluate other similar inflow river as well.