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Numerical study of regional environmental carrying capacity for livestock and poultry farming based on planting-breeding balance

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Journal of Environmental Sciences 2013年第9期25卷 1882-1889页

作者： Lihong Peng Yu Bai College of the Environment & Ecology Xiamen University

In consideration of the need to maintain planting-breeding balance, this article examines the capacity of the soil in Putian City, Fujian Province to absorb livestock and poultry excreta, and computes the environmental carrying capacity for livestock and poultry farming （ECCLPF） in each district of the city in terms of the fertility characteristics of the soil in the city, as well as its mix of crops cultivated and farming methods. On the basis of the computations, this work proceeds to classify the alarm grades of the city＇s environmental carrying capacity for livestock and poultry framing, and assess the environmental impact of the livestock and poultry farming industry. The results of our study indicate that, the city＇s ECCLPF ranges from 8.27 to 23.23 heads per ha when computed on the basis of nitrogen, and from 5.79 to 24.53 heads per ha when computed on the basis of phosphorus. A comparison between our research findings and the existing farming scale in Putian reveals that, in certain parts of the city, ECCLPF is overburdened to varying degrees. Specifically, Chengxiang District is severely overburdened, Hanjiang District and Meizhou Island have a level of overburdening between virtual overburdening and significant overburdening, Licheng District is virtually overburdened, and Xiuyu, Xianyou, and Bei＇an Districts have not exceeded their environmental carrying capacity and therefore have varying levels of potential for growth.

关键词： livestock and poultry farming planting-breeding combination nitrogen and phosphorus balance alarm classification system

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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

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Role and Effects of Eucommia ulmoides Leaves in the Growth Process of livestock and poultry

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Agricultural Biotechnology 2023年第5期12卷 43-45页

作者： Shijin GUO Ling LI Xin LI Yi ZHANG Jianjun WANG Lei ZHAO Yanping WANG Lu GUO Shijun FU Shandong Binzhou Animal Science&Veterinary Medicine Academy Binzhou 256600China Shandong Lvdu Ante Veterinary Drug Industry Binzhou 256600China

Substitutes of feed antibiotics have been a key research topic in the new stage of animal *** veterinary medicine refers to decoction pieces and their preparations processed from natural plants,animals,and minerals and used for animal disease prevention and improvement of animal production performance under the guidance of Chinese veterinary pharmacy *** ulmoides leaf extract has many active functional components such as chlorogenic acid,*** polysaccharides and flavonoids,which have many biological properties such as antibacterial,antioxidant,immune-regulation,sugar ester-and bone metabolism-regulation *** paper explored active ingredients and biological properties of *** leaf extract,as well as its role and effects in livestock and poultry breeding,providing a scientific basis for the use of *** leaves in livestock and poultry breeding.

关键词： Eucommia ulmoides leaves livestock and poultry farming Role Efficacy

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