摘要
为掌握武汉市城区水体污染现状和主要污染物以及污染原因,对武汉中心城区11个公园景观水体污染情况进行取样,选取物理指标DO、浊度、pH、EC和化学指标总磷(TP)、总氮(TN)、正磷酸盐(PO 3- 4-P)、硝酸盐氮(NO - 3-N)、水生植物种类(SP)、重金属Pb和Hg以及常用除草剂草甘膦(Gly)12个指标进行研究。结果表明:武汉市城区水体污染物主要为氮。仅个别水体TP含量高于0.4 mg/L(地表水Ⅴ类),Pb、Hg处于正常范围,草甘膦含量略高,为0.58~0.93 mg/L。草甘膦和重金属Pb含量在不同水体中没有显著性差异,Hg在不同水体间有极显著性差异( p <0.01);不同水体中TP、TN、PO 3- 4-P、DO、EC、TUB、pH、NO - 3-N有极显著性差异( p <0.01)。TN与TP、PO 3- 4-P具极显著正相关;TN、TP、PO 3- 4-P与TUB呈正相关;NO - 3-N与pH呈显著性正相关。通过主成分分析得出:武汉市城区水体污染的主要因素是氮磷两大因素。
To explore the water pollution characteristics and causes of urban lakes in wuhan city.sampling 11 urban lakes and selecting 12 indicators including of physical indicators DO,turbidity,pH,EC,chemical index of total phosphorus(TP),total nitrogen(TN),orthophosphate(PO 3-4-P),nitrate nitrogen(NO-3-N)and aquatic plant species(SP),heavy metal Pb and Hg,and commonly used herbicide glyphosate(Gly),the results showed that:Wuhan city main water pollutants is nitrogen.Only the TP content in some water bodies was higher than 0.4 mg/L(surface water GroupⅤ),while Pb and Hg were in the normal range,and the content of glyphosate was slightly higher between 0.58 and 0.93 mg/L.There was no significant difference in the content of glyphosate and heavy metal Pb in different water bodies,while Hg was significantly different in different water bodies(p<0.01).TP,TN,PO 3-4-P,DO,EC,Nul,PH,NO-3-N were significantly different in different water bodies(p<0.01).TN was very significant positively correlated with TP,PO 3-4-P;TN,TP,PO 3-4-P were positively correlated with TUB;NO-3-N had significant positive correlation with pH.The principal component analysis shows that the main factors of water pollution in Wuhan city are nitrogen and phosphorus.
作者
梁玉婷
杨星宇
王朴
康凯丽
欧克芳
汪婷
LIANG Yu-ting;YANG Xing-yu;WANG Pu;KANG Kai-li;OU Ke-fang;WANG Ting(Wuhan Institute of Landscape Architecture,Wuhan 430081,China)
出处
《环境生态学》
2021年第2期10-16,共7页
Environmental Ecology
基金
武汉市园林和林业局科研项目(武汉市园林和林业局2018[28])资助。
