摘要
为了加速水的流动和改善水环境,2006年12月3日至2007年1月7日开展引江水入里下河地区的试验。在流域内设置了55个监测点,对监测点水样的p H、水温、透明度、电导率、氨氮、化学需氧量、溶解氧、高锰酸盐指数共8个水质参数进行现场监测或实验室分析,并借助Arc GIS分析调水前后的水环境质量变化。结果表明:里下河地区主要的污染物为氨氮和化学需氧量,调水对氨氮浓度的影响最明显;调水对里下河地区水质的改善存在时空异质性,调水结束后水质又恢复到调水前水平。工业、生活污水的排放及面源污染等人类活动是造成本地水质恶化的主要原因。研究结果可为更好地了解调水过程中的水质变化,以及制定合理的调度方案提供参考。
In order to enhance water exchange and improve water quality in Lixia River watershed,water transfer experiment was conducted from Dec. 3rd,2006 to Jan. 7th,2007. Eight water quality parameters,namely,temperature,p H,dissolved oxygen（ DO）,chemical oxygen demand（ COD）,potassium permanganate index（ CODMn）,ammonia nitrogen（ NH＋4-N）,electrical conductivity（ EC）,transparency,were adopted to analyze the effects of water transfer on water quality. It was shown that NH＋4-N and COD were the main pollutants. But,the effects of water transfer on overall water quality in Lixia River watershed were spatially and temporally heterogeneous,as the water quality returned to the original level after the water transfer. Industrial wastewater,domestic sewage and non-point pollution were the key factors causing deterioration of water quality. These results would be helpful for a better understanding toward the water quality change during water transfer and would yield references for the making of proper scheduling scheme.
出处
《浙江农业学报》
CSCD
北大核心
2015年第6期1048-1055,共8页
Acta Agriculturae Zhejiangensis
基金
江苏省水利科技项目(2014050)
江苏省研究生培养创新工程(KYZZ-0031)
关键词
长江
调水
水质
时空差异
水环境
Yangtze River
water transfer
water quality
spatially and temporally heterogeneous
water environment
