Effects of land use and rainfall on sequestration of veterinary antibiotics in soils at the hillslope scale

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of land use and rainfall on sequestration of veterinary antibiotics in soils at the hillslope scale
	Zhao, Fangkai; Chen, Liding; Yang, Lei; Sun, Long; Li, Shoujuan; Li, Min; Feng, Qingyu
刊名	ENVIRONMENTAL POLLUTION
	2020-05
卷号	260 页码:1-6
关键词	Antibiotics Land use Rainfall event Spatial and temporal pattern Slope position
ISSN号	0269-7491
英文摘要	Veterinary antibiotics have been detected as contaminants of emerging concern in soil environment worldwide. Animal manure is frequently applied to agricultural fields to improve soil fertility, which can result in introducing large amount of antibiotics into soil environment. However, few attempts have been made to identify the spatial and temporal dynamics of veterinary antibiotics in soil at the hillslope scale with different land uses. This study was performed to explore the pattern and variability of veterinary antibiotics in the soil in response to rainfall events. Results showed that higher concentrations of veterinary antibiotics were generally found in cropland (292.6 +/- 280.1 ng/g) and orchard (228.1 +/- 230.5 ng/g) than in forestland (13.5 +/- 9.9 ng/g). After rainfall events, antibiotics accumulated in the soil at the positions where manure was applied, especially under high-intensity rainfall conditions. However, the antibiotic concentration in soil slightly increased from the top to the bottom of hills, thus indicating the restricted contribution of runoff to antibiotic transport, especially under low-intensity rainfall conditions. In addition, most antibiotics were sequestered in the surface soil (0-10 cm), and higher antibiotic concentrations were observed in deep soil (20-40 cm) in cropland than orchard. The soil aggregate, organic matter, and clay content played important roles in antibiotic sequestration along the hillslope subject to low-, medium-, and large-amount rainfall events, respectively. This study identified that land use, rainfall conditions, and soil structures jointly affect the spatial and temporal variability of antibiotics in soils on hillslopes. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44290]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Zhao, Fangkai,Chen, Liding,Yang, Lei,et al. Effects of land use and rainfall on sequestration of veterinary antibiotics in soils at the hillslope scale[J]. ENVIRONMENTAL POLLUTION,2020,260:1-6.
APA	Zhao, Fangkai.,Chen, Liding.,Yang, Lei.,Sun, Long.,Li, Shoujuan.,...&Feng, Qingyu.(2020).Effects of land use and rainfall on sequestration of veterinary antibiotics in soils at the hillslope scale.ENVIRONMENTAL POLLUTION,260,1-6.
MLA	Zhao, Fangkai,et al."Effects of land use and rainfall on sequestration of veterinary antibiotics in soils at the hillslope scale".ENVIRONMENTAL POLLUTION 260(2020):1-6.