【摘要】 评价分析表明，澜沧江流域水污染源及污染物排放呈增长状态，水质总体上呈恶化趋势。干流上中游水质较好且基本稳定，下游则恶化趋势明显且影响出境水质。在考虑澜沧江流域水污染防治规划时，应把控制下游污染作为重点内容。更多还原

【Abstract】 As shown by the analysis,the water pollution source and pollutants discharge in the basin of Lancang River are on the rise.As a whole,the water quality tends to deteriorate.The water quality at the upper and middle reaches of the main stream is commended and basically stable while that at the lower reaches obviously tends to deteriorate and has influenced the quality of the water flows abroad.When considering the pollution treatment plan of Lancang River,the priority should be given to the control of pollution at the lwoer reaches.更多还原