干旱区生态环境知识资源中心(Arid): Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil

Arid

DOI	10.1016/j.envpol.2022.118813
	Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil
	Hui, Kunlong; Cui, Yini; Tan, Wenbing
通讯作者	Tan, WB
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2022
卷号	297
英文摘要	Because of a shortage of water resources, sewage irrigation has become a popular management tool for farmland soil in arid areas of China; however, this has led to the accumulation of polycyclic aromatic hydrocarbons (PAHs) in soil. Soil is an important component of ecosystems, and nitrogen is an important nutrient required for plant growth. Nitrogen input can alter the physical, chemical, and biological processes in soil and thus lead to changes in soil organic matter and organic pollutants. However, whether these changes affect the accumulation of PAHs and whether such accumulation differs in the low-density fraction (LF) and high-density fraction (HF) of soil remains unclear. In this study, the response of PAHs in soil to nitrogen input (0, 100, 200, and 300 kg N ha(-1) yr(-1), respectively), including differences in LF and HF, were investigated through field experiments in a typical sewage-irrigated area. The results showed that nitrogen input could increase the concentrations of PAHs in soil from (7.6 +/- 1.1) x 10 (3) to (10.4 +/- 0.6) x 10(3) mu g kg(-1) and lead to striking differences between the LF ((5.06 +/- 0.75) x 10(3) to (1.89 +/- 0.18) x 10(3) mu g kg(-1)) and HF ((2.54 +/- 0.36) x 10(3) to (8.54 +/- 0.44) x 10(3) mu g kg(-1) ). Given the significant increase in global nitrogen input, our findings have implications for the optimization and management of agricultural activities in sewage irrigation areas, such as soil investigation before fertilization, the use of soil improvers, and the improvement of soil planting measures.
英文关键词	Nitrogen fertilizer Sewage irrigation area Organic pollutants Soil different density fractions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000766394900004
WOS关键词	ORGANIC-MATTER ; MICROBIAL COMMUNITIES ; HEAVY-METALS ; PAHS ; CARBON ; WATER ; RESPONSES ; DECOMPOSITION ; FUNGAL ; RIVER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392488
推荐引用方式 GB/T 7714	Hui, Kunlong,Cui, Yini,Tan, Wenbing. Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil[J],2022,297.
APA	Hui, Kunlong,Cui, Yini,&Tan, Wenbing.(2022).Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil.ENVIRONMENTAL POLLUTION,297.
MLA	Hui, Kunlong,et al."Nitrogen input leads to the differential accumulation of polycyclic aromatic hydrocarbons in the low- and high-density fractions in sewage-irrigated farmland soil".ENVIRONMENTAL POLLUTION 297(2022).