山西农业大学学报（自然科学版）2017，Vol.37Issue(11)：811-817,7.
郑州市景观水体东风渠绿藻水华污染特征及营养盐效应
Contaminative characteristics and nutrient effect of green algae in the landscape waterbody of DongFeng River in Zhengzhou city
摘要
Abstract
[Objective]The eutrophication of urban landscape water result is a common problem on deterioration of water quality.Studying the relationship between water quality and nutrient salt in landscape water is very important to con-trol water blooming and improve water quality.[Methods]The Chlorophyll a (Chl.a),Demagnesiumchlorophyll a. (Dechla.),nutrient and physicochemical properties of samples collected from DongFeng river were investigated during algae blooming summer and winter.[Results]The result showed that average contents of Chl.a were 29.76 μg·L-1 and 23.72 μg·L-1 in summer and winter,and Dechla were 18.13 μg·L-1 and 19.32 μg·L-1 ,respectively.The fluctuation ranges of Chl.a and Dechla.In winter was greater than that of in summer.The biomass of planktonic algae in winter had obvious spatial heterogeneity.In the sampling site I-2 # ,200 meters far from the east of HuaYuan road bridge,the content of Dechla was the highest (40.73 μg·L-1 ),and dissolved oxygen (DO)was the lowest (1.48 mg·L-1 )among all cross sections,showing the most serious water pollution.The average contents of total nitrogen(TN)and total phosphorus (TP)were 226.08 mg·L-1 and 6.25 mg·L-1 ,respectively during summer,the content of TP was changed smoothly.The average contents of TN and TP were 343.75 mg·L-1 and 11.70 mg·L-1 ,respectively in winter,and TP content varied widely in the different sites,showed spatial heterogeneity in winter.Water quality maintained a high eutrophic level in summer and winter.Chl.a was positively correlated with pH and turbidity(TB)during "water bloom".In addition,the variation ranges of Chl.a and Dechla.in winter sediment were 3. 21~10.74 μg·g-1 and 11.24~19.33 μg·g-1 , and their averages were 6.82 μg·g-1 and 13.81 μg·g-1 ,respectively.Average content of TN was 14.35 mg·g-1 ,it ten-ded to decrease and then increase along the flow direction from HuaYuan road to the DongMing road,the minimum content of TN was 12.66 mg·g-1 located in the west of JingSan road bridge (I-2'# ).The average content of TP was 6.56 mg·g-1 ,tended to decrease gradually from upper to downstream river along the flow direction.[Conclusion]The result of the study have some guiding significance for controlling the pollution of algae blooms.关键词
东风渠/富营养化/绿藻/叶绿素a/脱镁叶绿素a/底泥Key words
DongFeng River/Eutrophication/Chlorophyll a/Demagnesiumchlorophyll a/Sediment分类
农业科技引用本文复制引用
乔辛悦,田国行,刘文霞,刘璐..郑州市景观水体东风渠绿藻水华污染特征及营养盐效应[J].山西农业大学学报（自然科学版）,2017,37(11):811-817,7.基金项目
国家科技重大专项(2008ZX07526-002-03) （2008ZX07526-002-03）
