天津师范大学学报（自然科学版）2026，Vol.46Issue(1)：45-52,8.DOI:10.19638/j.issn1671-1114.20260107
于桥水库沉积物中碳氮磷的空间分布特征及污染评价
Spatial distribution and pollution evaluation of carbon,nitrogen and phosphorus in sediments of Yuqiao Reservoir
摘要
Abstract
In order to reveal the distribution characteristics of pollutants in the sediment of Yuqiao Reservoir,the contents of total organic carbon(TOC),total nitrogen(TN)and total phosphorus(TP)in the sediments at different depths of Yuqiao Reservoir were measured.The pollution degree of sediments was evaluated by comprehensive pollution index method and or-ganic index method.The results showed that:① The average contents of TOC,TN,and TP in the surface sediment of the studied area were 21.5 mg/g,1 331 mg/kg,and 526 mg/kg,respectively.The distribution characteristics of TN and TOC were similar,with high-value areas concentrated in the north and east of the reservoir,while the high-value areas of TP were concentrated in the east and south of the reservoir.② TOC and TN were mainly enriched in sediment at depths of 0-30 cm,and their vertical variation trends were roughly the same.However,the vertical variation trend of TP was not obvious,and the difference in content between adjacent layers was not significant.③ The average value of the comprehensive pollution index of sediment in Yuqiao Reservoir was 1.48,which indicated a mild pollution level.The average value of the organic index and mass percentage of organic nitrogen were 0.30 and 0.130％,respectively,indicating that the sediment was still clean.关键词
于桥水库/沉积物/总有机碳/总氮/总磷/综合污染指数Key words
Yuqiao Reservoir/sediment/total organic carbon/total nitrogen/total phosphorus/comprehensive pollution index分类
资源环境引用本文复制引用
古小超,刘金冠,李泽利,高锴,卞少伟,梅鹏蔚,吴亮..于桥水库沉积物中碳氮磷的空间分布特征及污染评价[J].天津师范大学学报（自然科学版）,2026,46(1):45-52,8.基金项目
国家水体污染控制与治理科技重大专项(2018ZX07111001) （2018ZX07111001）
天津市生态环境局引滦流域监督管理项目(TGPC-2019-D-0409). （TGPC-2019-D-0409）
