• 王琼,李法云,范志平,荣湘民.大伙房水库入库河流物理生境评价及其对水质状况的影响[J].环境科学学报,2015,35(9):2850-2859

  • 大伙房水库入库河流物理生境评价及其对水质状况的影响
  • Assessment of river physical habitat and its relationship with water quality in the Dahuofang Reservoir inflow rivers
  • 基金项目:国家水体污染与治理科技重大专项(No.2012ZX07505-001-01);辽宁省自然科学基金(No.2014020108);辽宁石油化工大学环境科学与工程学科创新团队项目([2014]11号)
  • 作者
  • 单位
  • 王琼
  • 1. 辽宁石油化工大学生态环境研究院, 抚顺 113001;2. 湖南农业大学资源环境学院, 长沙 410128
  • 李法云
  • 辽宁石油化工大学生态环境研究院, 抚顺 113001
  • 范志平
  • 辽宁石油化工大学生态环境研究院, 抚顺 113001
  • 荣湘民
  • 湖南农业大学资源环境学院, 长沙 410128
  • 摘要:2012年8—9月对大伙房水库入库河流39个河段的物理生境特征和水质状况进行调查,并运用相关分析和冗余分析的方法识别物理生境特征与水质状况的响应关系.研究结果表明,大伙房水库入库河流物理生境质量等级为较好以上的河段占43.6%,一般河段占48.7%,较差河段占5.1%,物理生境质量好的河段主要位于浑河上游地区,质量较差的河段主要位于大伙房水库周边地区.大伙房水库入库河流总磷(TP)、氨氮(NH4+-N)、总氮(TN)多符合国家Ⅱ类地表水环境标准,五日生化需氧量(BOD5)和化学耗氧量(CODCr)较高,部分点位超过了国家Ⅲ类地表水环境标准.大伙房水库入库河流物理生境特征与水质状况显著相关,物理生境综合评价指数与水体中TP、NH4+-N、溶解性固体总量(TDS)、电导率和硅酸盐呈显著负相关.物理生境指标中人类活动、土地利用方式、植被多样性和栖境复杂性对水质影响较大,在流域水生态管理中应以减少人为活动干扰、合理配置土地类型、控制农业面源污染和恢复自然植被为主要对策.
  • Abstract:Physical habitat conditions and water quality were examined in 39 reaches in the rivers flowing into the Dahuofang Reservoir from August to September 2012. Correlation analysis and redundancy analysis were used to identify the relationship between physical habitat characteristics and water quality. The results show that physical habitat quality of all reaches was 43.6% for good, 48.7% for fair, and poor 5.1% for poor. The reaches with good water quality were mainly located in upstream of the Hun river, and those for poor were located in the surroundings of Dahuofang Reservoir. The concentrations of total phosphorus (TP), ammonia (NH4+-N) and total nitrogen (TN) in most sites comply with the Class II "national standards for surface water quality". The concentrations of biochemical oxygen demand (BOD5) and chemical oxygen demand (CODCr) were much higher, and some sites couldn't meet Class III water quality standard. There was a significant correlation between physical habitat characteristic and water quality in the study area. Integrated assessment index of river physical habitat was negatively correlated with TP, NH4+-N, total dissolved solids (TDS), conductivity and silicate. Human activities, riverside land use, vegetation diversity and habitat complexity were the most important factors influencing the water quality. Reducing artificial disturbance, optimizing the distribution of land use, controlling agricultural non-point source pollution, restoring natural vegetation were as the main strategy for watershed ecological management.

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