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Estimation of interannual trends of ammonia emissions from agriculture in Jiangsu Province from 2000 to 2017

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Atmospheric and Oceanic Science Letters 2020年第3期13卷 268-273页

作者： HUANG Jiayu XIONG Ruonan FANG Li LI Tianling SHEN Weishou Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjingJiangsuChina

As the only alkaline gas in the atmosphere,ammonia could react with sulfur dioxide and nitrogen oxides to form the secondary particles.A large amount of NH3 in the atmosphere accelerates the rate of formation of fine particles;it therefore plays an important role in haze *** and poultry farming and nitrogen fertilizer application are the two main NH3 emission *** Province contributes the largest proportion of NH3 emissions from agriculture in key areas of national air pollution control in *** aims of this study are to investigate NH3 emissions from agriculture in Jiangsu Province using the emissions factor method,and analyze and summarize the characteristics and trends of NH3 emissions from 2000 to *** show that the NH3 emissions from agriculture in Jiangsu Province from 2000 to 2017 were mainly contributed by livestock and poultry farming(78.08%)and nitrogen fertilizer application(21.92%).Furthermore,a general fluctuation trend of an initial decrease and then an increase,of NH3 emissions from agriculture,could be found from 2000 to 2012,with minimum NH3 emissions in 2007(708.76 kt yr−1)and maximum emissions in 2012(837.64 kt yr−1);and then a decreasing trend was apparent from 2012(837.64 kt yr−1)to 2017(690.64 kt yr−1).A detailed estimation of the interannual trends and potential measures are also *** study provides a solid theoretical foundation for the development of NH3 emissions control in Jiangsu Province.

关键词： Agricultural source ammonia emissions livestock and poultry farming nitrogen fertilizer application

An ammonia emissions inventory for agricultural sources in Hefei,China

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Atmospheric and Oceanic Science Letters 2020年第3期13卷 260-267页

作者： HOU Xinhong YU Xingna Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjingChina

A comprehensive agricultural inventory of ammonia emissions for 2017 in Hefei was established on the basis of the specific emission factors and county-level activity *** emissions over a 1 km×1 km grid and the associated monthly variations were distributed on the basis of land-use type and meteorological conditions,*** total ammonia emissions were 27,242.7 t in 2017 in Hefei,to which livestock was the top contributor,accounting for 54.5%.Two major contributors to livestock waste were broilers and laying hens,which contributed 34.5%and 22.2%of the total emissions,***,Feixi,and Feidong counties,with more developed agriculture than other counties,accounted for a large proportion of the total ammonia emissions—as much as 28.5%,24.5%,and 21.0%,*** average emissions density of the whole region was 2.4 t km−2,and the higher values were mostly in areas with denser ***,peak ammonia emissions occurred in summer.

关键词： ammonia emissions emissions factor agricultural sources spatiotemporal

Improvement in bioconversion efficiency and reduction of ammonia emission by introduction of fruit fermentation broth in a black soldier fly larvae and kitchen waste conversion system

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Insect Science 2023年第4期30卷 975-990页

作者： Lusheng Li Lifei Chen Rongsheng Shang Guiying Wang Jibin Zhang School of Agricultural Science and Engineering Engineering Research Center of Shandong Province for Black Soldier Fly Breeding and Organic Waste ConversionLiaocheng UniversityLiaochengShandong ProvinceChina State Key Laboratory of Agricultural Microbiology National Engineering Research Centre of Microbial PesticidesCollege of Life Science and TechnologyCollege of Animal Science&TechnologyHuazhong Agricultural UniversityWuhanChina

The black soldier fly(BSF),Hermetia illucens(Diptera:Stratiomyidae),is an insect commonly used for the bioconversion of various organic *** only can the BSF convert organic waste into macromolecular organic substances,such as insect pro-teins,but it can also lessen the pollution associated with these waste products by reducing ammonia emissions,for *** this study,we measured the effects of adding fruit fermentation broth(Fer)and commercial lactic acid bacteria fermentation broth(Em)to kitchen waste(KW),as deodorizing auxiliary substances,on the growth performance of black soldier fly larvae(BSFL),the intestinal flora structure of BSFL,the ammonia emis-sion from the KW substrate,and the microbial community structure of the KW *** found that the addition of Fer or Em increased the body weight of BSFL after 6 d of culture,increasing the growth rate by 9.96%and 7.96%,*** addition of Fer not only reduced the pH of the KW substrate but also increased the relative abundance of probiotics,such as Lactobacillus,Lysinibacillus,and Vagococcus,which inhibited the growth of ammonifiers such as Bacillus,Oligella,Paenalcaligenes,Paenibacillus,Pseu-dogracilibacillus,and Pseudomonas,resulting in the reduction of ammonia emission in the KW ***,the addition of Fer or Em significantly increased the rela-tive abundances of Bacteroides,Campylobacter,Dysgonomonas,Enterococcus,and Ig-natzschineria in the gut of BSFL and increased the species diversity and richness in the K W *** findings provide a novel way to improve the conversion rate of organic waste and reduce the environmental pollution caused by BSF.

关键词： ammonia emissions black soldier fly fruit fermentation broth growth per-formance kitchen waste lactic acid bacteria fermentation broth

IMPROVING NITROGEN SAFETY IN CHINA: NITROGEN FLOWS, POLLUTION AND CONTROL

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Frontiers of Agricultural Science and Engineering 2022年第3期9卷 465-474页

作者： Chaopu TI Xiaoyuan YAN Longlong XIA Jingwen HUANG State Key Laboratory of Soil and Sustainable Agriculture Changshu National Agro-Ecosystem Observation and Research StationInstitute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Institute for Meteorology and Climate Research(IMK-IFU) Karlsruhe Institute of TechnologyGarmisch-Partenkirchen 82497Germany.

The impacts of nitrogen on environmental quality,greenhouse gas balances,ecosystem and biodiversity in China are of great concern given the magnitude of demand for food and *** summaries of historic N flows and their critical threats and sustainable management are urgently *** paper initially reviews the historical trends of N flows in China and identifies the critical threats of N ***,it describes some recent success stories of N management,and finally indicates barriers to N pollution *** review highlights three key ***,a steady increase of N input in China has led to a series of environmental problems via leaching and runoff,ammonia emissions and ***,although great efforts to improve N management and N safety in China,further quantifications of N flows and analysis of their underlying mechanisms are needed to improve the understanding of the N cycle and pollution ***,it proposes that the best available technologies combined with regulatory plans,laws,projects and policies should be implemented to overcome current barriers in N control and achieve a balance between the sustainable use of N resources and environmental conservation in China.

关键词： barriers future management ammonia emissions nitrogen input water N pollution