LIN Hongjun,ZHENG Xiaojun,HU Zhiyuan,et al.Physical and chemical characteristics of river and lake sediment and evaluation of nitrogen and phosphorus pollution in Xuwei New District of Lianyungang City[J].Journal of Yanbian University,2023,(04):366-371.
连云港徐圩新区河湖底泥的理化特征及其氮磷污染程度评价
- Title:
- Physical and chemical characteristics of river and lake sediment and evaluation of nitrogen and phosphorus pollution in Xuwei New District of Lianyungang City
- 文章编号:
- 1004-4353(2023)04-0366-06
- Keywords:
- Xuwei New District of Lianyungang City; sediment; geoaccumulation index; pH value; nitrate nitrogen; ammonia nitrogen; total nitrogen; total phosphorus
- 分类号:
- X53
- 文献标志码:
- A
- 摘要:
- 为探究连云港徐圩新区内河湖底泥的环境状况,对区域内河湖底泥的pH值、硝态氮(NO-3 - N)、氨氮(NH3 - N)、总氮(TN)、总磷(TP)5个理化指标进行了测定和分析,并利用地质累积指数法(Igeo)对底泥的氮磷污染程度进行了评估.结果表明:研究区河湖底泥的pH值在7.9～8.7范围内,其NO-3 - N、 NH3 - N、 TN和TP的含量范围分别为0.32～5.03 mg/kg、 1.73～24.68 mg/kg、 0.152～0.437 g/kg、 0.49～1.16 g/kg, 其中NO-3 - N、 NH3 - N和TP的变异系数相对较高; 研究区内河湖底泥中的TN和TP的Igeo平均值分别为1.97和2.30, 表明研究区内的河湖分别处于偏中度污染和中度污染的状态.该研究成果可为治理和保护徐圩新区内的河湖生态提供参考.
- Abstract:
- In order to understand the status of sediment environment in Xuwei New District of Lianyungang City, we analyzed the five physical and chemical index characteristics of sediment of rivers and lakes, including pH value, nitrate nitrogen(NO-3 - N), ammonia nitrogen(NH3 - N), total nitrogen(TN), total phosphorus(TP), and used the geoaccumulation index(Igeo)to evaluate the pollution degree of nitrogen and phosphorus in sediment.Our result show that the pH value is in the range of 7.9 - 8.7, and NO-3 - N, NH3 - N, TN, TP in sediment of rivers and lakes are 0.32 - 5.03 mg/kg, 1.73 - 24.68 mg/kg, 0.152 - 0.437 g/kg, 0.49 - 1.16 g/kg, respectively.Particularly, the coefficient of variation of NO-3 - N, NH3 - N, TP is relatively high; the Igeo average value of TN and TP are 1.97 and 2.30, respectively, indicating a near moderately polluted state and moderately polluted state in sediment of rivers and lakes.Our research can provide references for the management and protection of the ecology of rivers and lakes in the study area.
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备注/Memo
收稿日期: 2023-09-19
基金项目: 江苏大学横向课题(HX20230220); 江苏大学高级人才基金(20JDG067)
第一作者: 林洪军(1988—),男,硕士,工程师,研究方向为环境生态学.
通信作者: 程铮(1989—),男,硕士,工程师,研究方向为水生生物多样性.