摘要
对1990年长江流域570个水文站约8000测次数据的统计分析表明,长江干流氮污染水平自上游向下游有明显增强的趋势;相当一部分站点八十年代中期河水总氮含量比1960年前后增加5—10倍;河水氮含量的年内变化不同区域有各自的特点;河水氮污染的差异与区域人口和经济发展水平有关;氮污染促进了河水的酸化过程.
The data of about 8000 survey times and 570 hydrologic stations which were gauged in 1990 are analyzed. The results indicate that nitrogen contamination level of Yangtze mainstream has a raising trend from upper reaches to lower reaches; And TN content of a quantity of stations in middle 1980s is 5-10 times than that in 1960s. And the characteristics of seasonal variance of water nitrogen content vary with watersheds; and the difference of nitrogen contamination level is related to the regional population and development; and nitrogen contamination accelerates the acidification of river water.
出处
《环境化学》
CAS
CSCD
北大核心
1999年第4期289-294,共6页
Environmental Chemistry
基金
国家自然科学基金资助项目:No.49671017
