摘要
为解决以往水质监测数据多是针对表层水体采样,难以完整的反映水库水质状况的问题,本文以碧流河水库为研究对象,根据其水文及地形条件从水库上游至坝前依次选取六个监测断面,采用分层监测的方式对水库水质进行监测,利用GIS地统计学方法和图片展示功能对碧流河水库的温度、溶解氧、总氮及总磷的垂向分层分布状态进行分析,直观的展示出动态水位下的水库垂向深度变化及其相应的水质属性。结果表明水库总氮呈现均匀混合状态;水库总磷呈现汛期大,汛后小,冬季最低的变化特征,平面分布上呈现水力推移的特征,随着水力方向逐渐减少,垂向上则无明显分层现象。
In order to solve the problem that the monitoring data of water quality are mostly obtained by rom sampling the surface water,which is difficult to fully reflect the water quality of the reservoir.In this paper,six monitoring sections were selected from the entrance of Biliuhe reservoir to the dam,and using the hierarchical monitoring method to obtain the water quality monitoring samples Then analysis hierarchical state temperature,dissolved oxygen,total nitrogen,total phosphorus and vertical distribution of total nitrogen and phosphorus of Biliuhe reservoir by using the method of geostatistics model in GIS and its picture display function,to visually show the vertical depth variation of reservoir and its water quality under dynamic water level.The results showed that the total change of water temperature was the highest in summer,the lowest in spring and autumn,and lowest in winter,and there is a clear stratification in June,July, and August.However,the total change of water temperature was low in summer,the second in spring and autumn,and the highest in winter.There is obvious stratification in June,July,August and September.The total nitrogen in the reservoir showed a uniform mixing state,and the total phosphorus in the reservoir was high in the flood season,lower after the flood season and lowest in winter,meanwhile,it shows the characteristics of hydraulic in the plane distribution,with the hydraulic direction gradually reduced,and there is no obvious vertical stratification phenomenon.
出处
《吉林水利》
2017年第9期18-22,共5页
Jilin Water Resources
基金
国家自然科学基金仪器专项(NO.51327004)
关键词
水库水质
分层监测
时空变化
垂向分布
特征
reservoir water quality
hierarchical monitoring
spatial-temporal variability
vertical distribution
features
