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EXPLORING THE RECYCLING OF MANURE FROM URBAN LIVESTOCK FARMS: A CASE STUDY IN ETHIOPIA
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期
• Livestock manure was the main organic waste in urban and peri-urban areas.
• Manure production will increase by a factor of 3–10 between 2015–2050.
• Only 13%–38% of excreted N by livestock will be recycled in croplands.
• Intensification of urban livestock production greatly increased N surpluses.
• Reducing population growth and increasing livestock productivity needed.
Urban population growth is driving the expansion of urban and peri-urban agriculture (UPA) in developing countries. UPA is providing nutritious food to residents but the manures produced by UPA livestock farms and other wastes are not properly recycled. This paper explores the effects of four scenarios: (1) a reference scenario (business as usual), (2) increased urbanization, (3) UPA intensification, and (4) improved technology, on food-protein self-sufficiency, manure nitrogen (N) recycling and balances for four different zones in a small city (Jimma) in Ethiopia during the period 2015-2050. An N mass flow model with data from farm surveys, field experiments and literature was used. A field experiment was conducted and N use efficiency and N fertilizer replacement values differed among the five types of composts derived from urban livestock manures and kitchen wastes. The N use efficiency and N fertilizer replacement values were used in the N mass flow model.
Livestock manures were the main organic wastes in urban areas, although only 20 to 40% of animal-sourced food consumed was produced in UPA, and only 14 to 19% of protein intake by residents was animal-based. Scenarios indicate that manure production in UPA will increase 3 to 10 times between 2015 and 2050, depending on urbanization and UPA intensification. Only 13 to 38% of manure N will be recycled in croplands. Farm-gate N balances of UPA livestock farms will increase to>1 t·ha−1 in 2050. Doubling livestock productivity and feed protein conversion to animal-sourced food will roughly halve manure N production.
Costs of waste recycling were high and indicate the need for government incentives. Results of these senarios are wake-up calls for all stakeholders and indicate alternative pathways.
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期
• Manure utilization is hindered by separate specialist crop and livestock production systems.
• Improving manure utilization requires organizations for manure exchange.
• Policies and action plans for improving manure utilization are critically reviewed.
• A manure chain approach with third-party contractors is recommended.
Livestock numbers in China have more than tripled between 1980 and 2017. The increase in the number of intensive livestock production systems has created the challenges of decoupled crop and livestock systems, low utilization of manures in croplands, and subsequent environmental pollution. Correspondingly, the government has enacted a series of policies and regulations to increase the sustainability of livestock production. This paper reviews the objectives of these policies and regulations and their impacts on manure management. Since 2017 there have been two policy guides to speed up the appropriate use of manures, three action plans for increasing manure recycling, and one technical guide to calculate nutrient balances. Requirements of manure pollution control and recycling for improved environmental performance of livestock production systems were included in three revised environmental laws. Most recent survey data indicate that the utilization of livestock manures was 70% in 2017, including that used as fertilizer and/or for production of energy. The targets for manure utilization are 75% in 2020 and 90% in 2035. To achieve these targets and promote ‘green livestock production’, additional changes are needed including the use of third-party enterprises that facilitate manure exchange between farms and a more integrated manure nutrient management approach.
Sha WEI, Zhiping ZHU, Jing ZHAO, David R. CHADWICK, Hongmin DONG
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 45-57 doi: 10.15302/J-FASE-2020369
关键词: integrated crop and livestock production manure utilization policy recommendations sustainability third-party service contractors
LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA
《农业科学与工程前沿(英文)》 2023年 第10卷 第3期 页码 341-362 doi: 10.15302/J-FASE-2023509
● Carbon reduction potential of manure treatment technologies was summarized.
关键词: valorization of animal manure manure management carbon emission carbon footprint methodology carbon trading
EXPLORING THE RECYCLING OF MANURE FROM URBAN LIVESTOCK FARMS: A CASE STUDY IN ETHIOPIA
Solomon Tulu TADESSE, Oene OENEMA, Christy van BEEK, Fikre Lemessa OCHO
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 159-174 doi: 10.15302/J-FASE-2020375
关键词: compost food self-sufficiency livestock production nitrogen balance nitrogen use efficiency scenario analysis
Alan FRANZLUEBBERS, Derek HUNT, Gary TELFORD, Shabtai BITTMAN, Quirine KETTERINGS
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 81-96 doi: 10.15302/J-FASE-2020365
关键词: cropland dairy manure nutrient cycling pastureland poultry manure swine manure
贾伟,臧建军,张强,李德发
《中国工程科学》 2017年 第19卷 第4期 页码 130-137 doi: 10.15302/J-SSCAE-2017.04.021
本文介绍我国畜禽养殖废弃物还田利用模式发展概况,分析养殖废弃物循环利用产业发展的问题,探讨下一步的发展战略。总结发现,多年来国内外在探索畜禽养殖废弃物还田利用模式、农田适宜载畜量参数等方面取得了重要的进展,但仍然存在种养结合养分不平衡、各种处理过程养分损失大、农田合理施用粪肥原则缺失等问题。下一步的研究应该以“还田利用,环境友好”为目标,引入种养结合粪便养分管理理念,开展畜禽养殖废弃物的收集—贮存—处理—还田;开展包括优化还田安全利用技术、种养循环过程温室气体减排、农田对养殖废弃物合理消纳量定量、减少氮磷养分损失避免面源污染等方面的研究,同时在政策上引导畜禽养殖废弃物的高效资源化利用。
GREENHOUSE GAS EMISSIONS FROM LIVESTOCK IN CHINA AND MITIGATION OPTIONS WITHIN THE CONTEXT OF CARBON
《农业科学与工程前沿(英文)》 2023年 第10卷 第2期 页码 226-233 doi: 10.15302/J-FASE-2023486
● Livestock is major greenhouse gas source in agriculture in China.
关键词: animal husbandry emission reduction solutions feed improvement greenhouse gases emission manure management
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1415-5
• ARGs were detected in livestock manure, sludge, food waste and fermentation dregs.
关键词: Antibiotic resistance genes Organic solid waste Aerobic composting Livestock manure Sludge
NUMERICAL MODELING OF BIOMASS GASIFICATION USING COW DUNG AS FEEDSTOCK
《农业科学与工程前沿(英文)》 2023年 第10卷 第3期 页码 458-467 doi: 10.15302/J-FASE-2023500
● Gasification of cow dung was evaluated using Aspen Plus software.
关键词: Aspen Plus biomass gasification manure of livestock and poultry simulation syngas
Xiying Hao, Francis J. Larney
《环境科学与工程前沿(英文)》 2017年 第11卷 第3期 doi: 10.1007/s11783-017-0955-1
关键词: Livestock manure greenhouse gas flux straw bale compost bin N2O CH4 CO2
Strategies to reduce nutrient pollution from manure management in China
David R. CHADWICK, John R. WILLIAMS, Yuelai LU, Lin MA, Zhaohai BAI, Yong HOU, Xinping CHEN, Thomas H. MISSELBROOK
《农业科学与工程前沿(英文)》 2020年 第7卷 第1期 页码 45-55 doi: 10.15302/J-FASE-2019293
As the demand for livestock products continues to increase in China, so too does the challenge of managing increasing quantities of manure. Urgent action is needed to control point source (housing, storage and processing) and diffuse (field application) pollution and improve the utilization of manure nutrients and organic matter. Here, we review strategies to improve management at each stage of the manure management chain and at different scales. Many strategies require infrastructure investment, e.g., for containment of all manure fractions. Engineering solutions are needed to develop advanced composting systems with lower environmental footprints and design more efficient nutrient stripping technologies. At the field-scale, there is an urgent need to develop a manure nutrient recommendation system that accounts for the range of manure types, cropping systems, soils and climates throughout China. At the regional scale, coordinated planning is necessary to promote recoupling of livestock and cropping systems, and reduce nutrient accumulation in regions with little available landbank, while minimizing the risk of pollution swapping from one region to another. A range of stakeholders are needed to support the step change and innovation required to improve manure management, reduce reliance on inorganic fertilizers, and generate new business opportunities.
关键词: cropping farms livestock production manure management chain recoupling nutrient loss
LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期
Livestock provide multifaceted services to human societies worldwide. In developing countries, they are crucial assets and safety net for rural poor, and they provide nutrients-dense food to nourish people. In developed economies, growth in demand for animal-derived food is slowing while attention is growing over the role of livestock farming in an enhanced circular food system for sustainability. This analysis, focusing on the modern food systems in developed countries, aims to highlight the unique function of livestock that helps people re-harvest and upcycle crop and food residues generated along the food chain that are otherwise unfit for human consumption. First, human-unusable crop and food residue materials are described in three broad categories based on their characteristics and potential feeding attributes; the magnitude of biomass materials that are already used in routine animal feeding as well as residues that remain as underutilized resources are illustrated using the USA as an example. Then, the research and technology development critically needed for the future is discussed. As the world strives to produce more food with smaller environmental and climate footprints, upcycling the residual biomass via livestock for food production presents a viable pathway toward improved resource use, reduced pollution and enhanced food system efficiency.
《农业科学与工程前沿(英文)》 doi: 10.15302/J-FASE-2023487
● Research on heavy metal passivation and nitrogen emissions is necessary for the pig industry.
关键词: additives composting heavy metals passivation nitrogen retention pig manure
ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE
《农业科学与工程前沿(英文)》 2023年 第10卷 第3期 页码 437-447 doi: 10.15302/J-FASE-2023507
● Content of heavy metals in hydrochar varies considerably, from 50% to 100%.
关键词: heavy metals dairy manure hydrochar hydrothermal carbonization waste management
标题 作者 时间 类型 操作
POLICIES AND REGULATIONS FOR PROMOTING MANURE MANAGEMENT FOR SUSTAINABLE LIVESTOCK PRODUCTION IN CHINA
期刊论文
POLICIES AND REGULATIONS FOR PROMOTING MANURE MANAGEMENT FOR SUSTAINABLE LIVESTOCK PRODUCTION IN CHINA
Sha WEI, Zhiping ZHU, Jing ZHAO, David R. CHADWICK, Hongmin DONG
期刊论文
EXPLORING THE RECYCLING OF MANURE FROM URBAN LIVESTOCK FARMS: A CASE STUDY IN ETHIOPIA
Solomon Tulu TADESSE, Oene OENEMA, Christy van BEEK, Fikre Lemessa OCHO
期刊论文
INTEGRATED CROP-LIVESTOCK SYSTEMS: LESSONS FROM NEW YORK, BRITISH COLUMBIA, AND THE SOUTH-EASTERN UNITED
Alan FRANZLUEBBERS, Derek HUNT, Gary TELFORD, Shabtai BITTMAN, Quirine KETTERINGS
期刊论文
GREENHOUSE GAS EMISSIONS FROM LIVESTOCK IN CHINA AND MITIGATION OPTIONS WITHIN THE CONTEXT OF CARBON
期刊论文
Environmental effects and risk control of antibiotic resistance genes in the organic solid waste aerobic composting system: A review
期刊论文
Greenhouse gas emissions during co-composting of cattle feedlot manure with construction and demolition
Xiying Hao, Francis J. Larney
期刊论文
Strategies to reduce nutrient pollution from manure management in China
David R. CHADWICK, John R. WILLIAMS, Yuelai LU, Lin MA, Zhaohai BAI, Yong HOU, Xinping CHEN, Thomas H. MISSELBROOK
期刊论文
EFFECT OF EXOGENOUS ADDITIVES ON HEAVY METAL PASSIVATION AND NITROGEN RETENTION IN PIG MANURE COMPOSTING
期刊论文