南明河干流中下游丰水期、枯水期水质空间分布变化规律

南明河是长江流域乌江水系清水河的源头河流,发源于贵州省平坝区马场镇白泥田。南明河作为贵阳市的"母亲河",属于典型的流经城区河流。本文搜集到南明河绕城区段中下游甲秀桥、定扒桥2个断面2007年1月-2016年12月的月监测数据,选取氨氮、总磷、溶解氧、高锰酸钾指数、BOD5作为主要评价指标,并分析各指标多年丰水期、枯水期的水质空间分布变化规律,对于指导后期河道整治具有重要意义。

Spatial distribution of water quality in the middle and lower reaches of the Nanming River

Nanming River is the headwater of Qingshui River of Wujiang River System in the Yangtze River Basin,which originates from bainitian,Machang Town,Pingba District,Guizhou Province.Nanming River,as the "Mother River" of Guiyang City,is a typical river flowing through the urban area.This paper collects the monthly monitoring data of Jiaxiu bridge and Dingpa bridge in the middle and lower reaches of Nanming River around the urban area from January 2007 to December 2016,selects ammonia nitrogen,total phosphorus,dissolved oxygen,potassium permanganate index and BOD5 as the main evaluation indexes,and analyzes the water quality and air quality of each index in the wet and dry seasons for many years.The law of inter distribution variation is of great significance to guide the river regulation in the later stage.