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引用本文:江涛,张晓磊,陈晓宏,林凯荣.东江中上游主要控制断面水质变化特征.湖泊科学,2009,21(6):873-878. DOI:10.18307/2009.0618
JIANG Tao,ZHANG Xiaolei,CHEN Xiaohong,LIN Kairong.The characteristics of water quality change for the main control sections in the middle and upper reaches of East River. J. Lake Sci.2009,21(6):873-878. DOI:10.18307/2009.0618
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东江中上游主要控制断面水质变化特征
江涛, 张晓磊, 陈晓宏, 林凯荣
中山大学地理科学与规划学院, 广州 510275
摘要:
根据2001-2007年东江干流中上游博罗站、河源站和龙川站的监测资料,采用季节性Kendall检验方法,对CODMn、BOD5和NH3-N等水质参数的浓度变化趋势进行分析,结果表明:(1)3个断面的BOD5浓度都呈高度显著上升趋势;(2)龙川断面CODMn和NH3-N的浓度变化不显著,而河源和博罗断面CODMn的浓度呈显著下降趋势、NH3-N浓度呈显著上升趋势;(3)中游主要控制断面水质变化速率大于上游;(4)水质变化受流量的影响相对较小,主要是由陆域污染物排放量的变化所引起的.
关键词:  季节性Kendall检验法  水质变化  东江
DOI:10.18307/2009.0618
分类号:
基金项目:国家自然科学基金重点项目(50839005);国家自然科学基金项目(50809078)联合资助
The characteristics of water quality change for the main control sections in the middle and upper reaches of East River
JIANG Tao, ZHANG Xiaolei, CHEN Xiaohong, LIN Kairong
School of Geographical Science and Planning, Sun Yat-Sen University, Guangzhou 510275, P.R.China
Abstract:
Changes of the concentrations of COD Mn, BOD5and NH3-N from main sections of the middle and upper reaches of EastRiver were identified, by using the method of seasonal Kendall test for water quality data from Longchuan, Heyuan and Boluomonitoring stations during 2001-2007. The results suggest that: (1) the concentrations of BOD5 increase significantly at all stations;(2) the concentrations of CODMnand NH3-N do not display a significant trend at Longchuan control section, and the concentrationsof CODMn showed a decreasing trend and NH5-N showed an increasing trend at both Heyuan and Boluo control sections; (3) changein the rate of water quality from the middle reaches is larger than that from the upper reaches; (4) the water quality change is mainlyinfluenced by the change of waste discharge.
Key words:  Seasonal Kendall test  water quality change  East River
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