摘要
采用2002～2009年的监测数据,对阿哈水库理化指标的时空动态进行分析,结果表明,阿哈水库理化指标具有明显的时空分布特征,总磷(TP)从2002年的0.013 mg/L增至2009年的0.040 mg/L;季节上TP和总氮(TN)浓度为夏季>春季>冬季>秋季,氨氮(NH4-N)为冬季相关,与TN、NH4-N不相关。藻类数量增加是2009年透明度下降的直接影响因子,磷浓度升高促进藻类增加是重要的间接影响因子。
Based on the monitoring data from 2002-2009,the spatial and temporal variation of the physicochemical indexes in Aha reservoir were analyzed,the results indicated that,the physicochemical indexes in Aha reservoir were characterized by obvious spatial and temporal variation,TP content increased from 0.013 mg/L in 2002 to 0.040 mg/L in 2009;the seasonal variation of TP and TN concentration was shown as summer spring winter autumn,while that of NH4-N was shown as winter summer autumn spring.The water quality in the middle of the reservoir was better than that in the northeast,but worse than that in the southwest.Chlorophyll a was positively correlated with TP,and negatively correlated with SD,but had no correlation with TN and NH4-N.The declining water transparency in Aha reservoir was directly caused by the increasing algae,which,moreover,indirectly resulted from the arising P concentration.
出处
《安徽农业科学》
CAS
北大核心
2011年第11期6634-6636,共3页
Journal of Anhui Agricultural Sciences
基金
贵阳市社会发展攻关项目(2009304)
关键词
富营养化
理化指标
时空分布
阿哈水库
Eutrophication
Physicochemical index
Spatial and temporal distribution
Aha reservoir
