Hydrochar and microplastics disturb soil dissolved organic matter and prominently mitigate ammonia volatilization from wheat growing soil
文献类型： 外文期刊
作者： Feng, Yuanyuan 1 ; Chen, Sen 1 ; Han, Lanfang 3 ; Wang, Bingyu 4 ; Sun, Haijun 2 ; Xie, Wenping 5 ; Lu, Qianwen 6 ; Feng, Yanfang 1 ; Poinern, Gerrard Eddy Jai 7 ; Xue, Lihong 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Agroenvironm Downstream Yangtze Plain, Key Lab Combined Farming & Raising,Natl Agr Expt S, Nanjing 210014, Peoples R China
2.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China
3.Guangdong Univ Technol, Inst Environm & Ecol Engn, Guangdong Prov Key Lab Water Qual Improvement & Ec, Guangzhou 510006, Peoples R China
4.Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Jiangsu Key Lab Chem Pollut Control & Resources Re, Nanjing 210094, Peoples R China
5.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
6.Univ Connecticut, Dept Plant Sci & Landscape Architecture, Storrs, CT 06269 USA
7.Murdoch Univ, Coll Sci Hlth Engn & Educ, Murdoch Appl Innovat Nanotechnol Res Grp, Perth, WA 5150, Australia
关键词： Wheat soil; Ammonia volatilization; Microplastics; Hydrochar; Dissolved organic matter
期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.509； 五年影响因子：5.678 ）
ISSN： 0929-1393
年卷期： 2022 年 178 卷
页码：
收录情况： SCI
摘要： The impacts of microplastics (MPs) pollution on the nitrogen (N) cycle in soil ecosystems have attracted worldwide attention. Meanwhile, dissolved organic matter (DOM)-rich hydrochar (HBC) is being tried as an emerging soil conditioner for gaseous N reduction load to the atmosphere. However, the influence of MPs and HBC on soil DOM and ammonia (NH3) volatilization in wheat soils remains poorly understood. In this study, a soil column experiment was established in wheat growing soils to determine the impacts of HBC, MPs (i.e., polyethylene and polyacrylonitrile), and the co-occurrence of HBC and MPs (HBC + MPs) on soil NH3 volatilization, physicochemical properties and wheat growth. In comparison with the control (CK, without MPs or HBC), HBC, MPs, and HBC + MPs reduced cumulative NH(3 )volatilization by 45.4%, 66.7-67.4% and 29.8-58.7%, respectively. Soil DOM fulvic acid-like and humic aid substance abundances of the other treatments were increased by 18.5-56.2% and 12.7-39.3%, respectively, compared to CK. Besides, soil NH3 fluxes were positively correlated to soil NH4+-N concentration at basal fertilization and soil NO3?-N concentration at first supplementary fertilization. HBC, MPs and HBC + MPs treatments promoted soil urease activity and plant N uptake by 6.5-24.2% and 31.9-74.3%, respectively, compared to CK. This study provides an insight into the variation of NH3 volatilization caused by anthropogenic carbon in wheat soil ecosystems.
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