摘要
对位于太湖西部宜兴市大浦镇的一条入湖河流水质的年变化规律进行了分析。结果表明：（1）河道全年总氮含量监测值均劣于Ⅴ类水指标，其他水质指标相当于Ⅱ～Ⅳ类水水质，水体的富营养化主要体现为总氮含量的超标；（2）除TN、TP，其余水质指标在植物的生长季均劣于非生长季；（3）水体中BOD5、CODMn、Chla含量的变化主要受温度的影响，温度变化是水体有机质含量变化的触发因子；（4）降雨量与水体TP含量呈显著正相关，但对其他水质指标影响较小，说明水体生态过程对TP的影响相对较小，TN等指标更易受水体生态过程的影响。
The changes of water quality at an upstream river of Taihu Lake near Linzhuang Port which located in Dapu town, Yixing city were investigated from October 2004 to September 2005. The results showed that the concentration of TN was worse than class Ⅴ water quality all over the year. The other indices were near class Ⅱ to class Ⅳ. The eutrophication of water was mainly represented as the exceeding of TN. Except the concentration of TN and TP, the other water quality indices were worse in growth season than that in non-growth season. The changes of BOD5, CODMn, Chla were mostly affected by temperature. Tempera ture was the active factor for BOD5 and COD. Precipitation only had positive correlation with the concentration of TP. It showed that TP was influenced little by ecological process of riv er ecosystem than others such as TN.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第6期121-124,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家高技术研究发展计划("863"计划)(2002AA601012-05)
关键词
河流
富营养化
触发因子
季节变化
太湖
River
Eutrophication
Stimulus factors
Seasonal variation
Taihu Lake
