[1]周 涛,苏正安*,刘刚才,等.川中丘陵区紫色土抗生素残留特征及其生态风险[J].山地学报,2024,(2):164-173.[doi:10.16089/j.cnki.1008-2786.000813]
　ZHOU Tao,SU Zheng'an*,LIU Gangcai,et al.Antibiotics Residue and Ecological Risks in Purple Soils of the Central Sichuan Basin, China[J].Mountain Research,2024,(2):164-173.[doi:10.16089/j.cnki.1008-2786.000813]
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川中丘陵区紫色土抗生素残留特征及其生态风险
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2024年第2期
页码:
164-173
栏目:
山地环境
出版日期:
2024-06-15

文章信息/Info

Title:
Antibiotics Residue and Ecological Risks in Purple Soils of the Central Sichuan Basin, China
文章编号:
1008-2786-(2024)2-164-10
作者:
周 涛1; 2; 苏正安1*; 刘刚才1; 谢骁健1; 2; 周 铃1; 2
(1.中国科学院、水利部成都山地灾害与环境研究所 中国科学院山地表生过程与生态调控重点实验室,成都 610299; 2.中国科学院大学,北京 100049)
Author(s):
ZHOU Tao1; 2;  SU Zheng'an1*;  LIU Gangcai1;  XIE Xiaojian1; 2;  ZHOU Ling1; 2
(1. Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Resources, Chengdu 610299, China; 2. University of Chinese Academy of Science, Beijing 100049, China)
关键词:
抗生素残留;  土地利用;  生态安全;  紫色土;  粪肥浇灌
Keywords:
antibiotics residue;  land use;  ecological security;  purple soil;  manuring
分类号:
X833
DOI:
10.16089/j.cnki.1008-2786.000813
文献标志码:
A
摘要:
抗生素在表层土壤中富集,将干扰植物、土壤动物以及微生物的生长发育,威胁生态系统安全。紫色土作为长江中上游重要的农业土壤资源,其抗蚀性弱和优先流发育的特点为环境残留抗生素迁移提供了动力条件。目前相关研究多针对目标抗生素的环境迁移行为,土壤残留抗生素的自然丰度、自然污染特征以及环境风险尚不明晰。本研究选择川中丘陵区6种典型土地利用类型(旱地、林地、果园、水田、化肥菜园和粪肥菜园)的紫色土土壤及灌溉水为研究对象,对5类11种抗生素进行残留量的测定,并利用风险商值法进行抗生素生态风险评估。结果表明:(1)土壤中检出金霉素、诺氟沙星、环丙沙星和恩诺沙星。其中,诺氟沙星、环丙沙星和恩诺沙星仅在粪肥菜园土壤中有检出,其残留量分别为5.95、3.36和6.52 μg?kg-1; 金霉素在粪肥菜园土壤中残留量最高,为43.00 μg?kg-1。(2)灌溉水中各类抗生素含量均低于仪器检出限。(3)研究区内土壤抗生素风险商值范围为0.08～0.43,处于中低生态风险水平,但抗生素残留量均小于国际土壤生物毒性触发值(100 μg?kg-1),处于相对安全的生态风险水平。(4)研究区内土壤抗生素来源可能与有机肥施用有关,通过调整施肥结构可能在一定程度上降低抗生素的环境生态风险。本研究可为川中丘陵紫色土区生态安全建设提供依据。
Abstract:
The enrichment of antibiotics in topsoil will interfere with the growth and development of plants, soil fauna, and microorganisms, threatening ecosystem security. As an important agricultural soil resource in the middle and upper reaches of the Yangtze River, China, purple soils are characterized by weak erosion resistance and preferential flow development, which provide dynamic conditions for the migration of environmental residual antibiotics. Formerly, most of the related studies in antibiotics migration in purple soil focused on the mechanism of environmental migration of target antibiotics; unfortunately, the natural abundance, natural contamination characteristics, and environmental risks of soil residual antibiotics are not yet addressed.
In this study, purple soil in 6 land use types(dryland, woodland, orchard, paddy field, fertilizing vegetable garden and manuring vegetable garden)and irrigation water in the hilly area of central Sichuan basin, China were targeted for determination of residue levels of 11 antibiotics in five categories, followed by an ecological risk assessment of antibiotics using the risk quotient method.
(1)Chlortetracycline(CTC), norfloxacin(NFX), ciprofloxacin(CFX)and enrofloxacin(EFX)were detected in purple soils. NFX, CFX and EFX were only detected in manuring vegetable garden, with soil residues values of 5.95, 3.36 and 6.52 μg?kg-1, respectively. CTC had the highest residue of 43.00 μg?kg-1 in manuring vegetable garden among six typical land uses.
(2)No antibiotics were detected in irrigation water in the study area, suggesting that the levels of all types of antibiotics residues in irrigation water were below the detection limit of instrument to be used in the study.
(3)The risk quotient values(RQ)of antibiotics in purple soils in the study area ranged from 0.08 to 0.43, which were at a low or middle ecological risk level; the antibiotics residues were all lower than the international soil biological toxicity trigger value(100 μg?kg-1), at a relatively safe ecological risk level.
(4)The source of antibiotics in the study area might contribute to the application of organic fertilizer; therefore, environmental and ecological risks of antibiotics in soil might be reduced to a certain extent by adjusting the fertilizer application structure.
This study provides a basis for ecological security construction in the purple soil area of the central Sichuan basin.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2023- 07-31; 改回日期(Accepted date):2024- 03-30
基金项目(Foundation item): 国家自然科学基金(42277338); 四川省科技计划(2022YFS0500)。[National Natural Science Foundation of China(42277338); Sichuan Science and Technology Program(2022YFS0500)]
作者简介(Biography): 周涛(1996-),男,河南三门峡人,博士研究生,主要研究方向:水土保持与生态修复。[ZHOU Tao(1996-), male, born in Sanmenxia, Henan province, Ph.D. candidate, research on soil and water conservation and ecological restoration] E-mail: zhoutao@imde.ac.cn
*通讯作者(Corresponding author): 苏正安(1980-),男,博士,副研究员,主要研究方向:土壤侵蚀和水土保持。[SU Zheng'an(1980-), male, Ph.D., associate professor, research on soil erosion and soil and water conservation] E-mail: suzhengan@imde.ac.cn
更新日期/Last Update: 2024-03-30