Article
Engineering, Environmental
Aura Cardenas, Christian Ammon, Britt Schumacher, Walter Stinner, Christiane Herrmann, Marcel Schneider, Soren Weinrich, Peter Fischer, Thomas Amon, Barbara Amon
Summary: This study measured methane emissions from liquid dairy cow manure under summer and winter storage conditions, finding that methane emissions were considerably higher in summer than in winter. The results can provide insights for strategies to mitigate methane emissions from manure storage.
Article
Green & Sustainable Science & Technology
Alun Scott, Richard Blanchard
Summary: This study reveals that despite significant success in capturing CH4 and carbon dioxide as biogas and preventing N2O emissions, gains made can be lost in a subsequent process, negating some or all of the advantage. Additionally, the process of extracting value from the captured resource is discussed in light of current farm parameters together with indications of other potential revenue streams.
Article
Multidisciplinary Sciences
Anna M. Naranjo, Heidi Sieverding, David Clay, Ermias Kebreab
Summary: Livestock production contributes to GHG emissions and there is variability in the carbon footprint. This study assesses GHG emissions from dairy production in South Dakota using a life cycle assessment. Results show that producing 1 kg of fat and protein corrected milk in South Dakota emits 1.23 kg CO2 equivalents, with enteric methane and manure management as major contributors. Improving genetics, nutrition, and feed production, as well as utilizing anaerobic digesters, can further reduce the carbon footprint of South Dakota dairies.
Article
Environmental Sciences
Obemah David Nartey, Deyan Liu, Jiafa Luo, Stuart Lindsey, Hong J. Di, Zengming Chen, Junji Yuan, Tiehu He, Weixin Ding
Summary: The study found that applying dairy effluent significantly increased ammonia emissions during the wheat season, but had no discernible impact on N2O emissions compared to inorganic fertilizer. However, the greater application of effluent led to a significant increase in NO emissions. The combined application of manure and urea reduced N2O and NO emissions, but increased NH3 emissions during the wheat season.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Agriculture, Multidisciplinary
Katie Starsmore, Ben Lahart, Nicolas Villalobos-Lopez, Michael Egan, Jonathan Herron, Jennifer Burke, Laurence Shalloo
Summary: This study investigated the effect of ranking grazing dairy cows by residual methane emission (RME) on animal productivity and enteric methane emissions. The results showed that the low RME group had lower methane emissions while maintaining milk production and feed conversion efficiency.
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
(2023)
Article
Environmental Sciences
Sonja Sif Olafsdottir, Claus Dalsgaard Jensen, Anna Lymperatou, Ulrik Birk Henriksen, Hariklia N. Gavala
Summary: Current agricultural practices for manure storage contribute significantly to greenhouse gas emissions, particularly methane. This study compared the effects of acidification with sulfuric acid and thermal treatment on suppressing methane emissions and preserving methane potential. The results showed that thermal treatment significantly enhanced methane potential, while acidification reduced methane yield compared to non-treated manure. The study suggests that thermal treatment, such as pasteurization, is a promising alternative to the widely used acidification method.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agriculture, Dairy & Animal Science
Joyce L. Marumo, P. Andrew LaPierre, Michael E. Van Amburgh
Summary: This study developed models to predict CH4 production and yield in dairy cattle and investigated the effects of monensin on CH4 emissions. Monensin reduced CH4 production and yield, and the models that included dietary composition and DMI provided better predictions. The developed models outperformed published equations.
Article
Agriculture, Multidisciplinary
Rana A. Genedy, Jactone A. Ogejo
Summary: This study explored the use of machine learning algorithms to predict manure temperature, finding that temperature was influenced by depth and ensemble models performed better, with increased accuracy as manure depth increased.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Agriculture, Dairy & Animal Science
Ali Hardan, Philip C. C. Garnsworthy, Matt J. J. Bell
Summary: This study aimed to investigate the variability in enteric methane (CH4) emission rate and emissions per unit of milk among dairy cows on commercial farms in the UK. The results showed that CH4 emissions vary across and within lactations, but the ranking of a herd remains consistent, which is beneficial for obtaining spot measurements of CH4.
Article
Agriculture, Dairy & Animal Science
Awais Ahmed, Matthew Flavel, Shane Mitchell, Gregor Macnab, Manisha Dunuarachchi Dunuarachchige, Aniruddha Desai, Markandeya Jois
Summary: This study assessed the influence of a natural sugarcane extract on milk production, methane emissions, and animal wellbeing in a commercial dairy farm. The results showed that the extract increased milk yield, decreased methane emissions, and reduced bulk tank somatic cell counts.
Article
Agriculture, Dairy & Animal Science
Peng Jia, Yan Tu, Zhihao Liu, Qi Lai, Fadi Li, Lifeng Dong, Qiyu Diao
Summary: This study investigated the greenhouse gas emission characteristics of lactating Holstein dairy cows in East China and found that milk yield, milk fat yield, milk protein yield, and total milk solids yield had an impact on total CO2 emissions. This research is important for formulating emission reduction measures and establishing greenhouse gas inventories.
JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Simon Svane, Henrik Karring
Summary: The study found that certain plant extracts have the potential to inhibit ammonia and methane emissions in pig manure, suggesting their use in sustainable manure management.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Green & Sustainable Science & Technology
Marcello Ermido Chiodini, Michele Costantini, Michele Zoli, Jacopo Bacenetti, Daniele Aspesi, Lorenzo Poggianella, Marco Acutis
Summary: This study conducted a real-scale trial at a commercial dairy farm to test the effectiveness of the commercial additive SOP LAGOON in reducing carbon-based greenhouse gas emissions from liquid manure. The results showed that after 3 to 4 months of additive application, the treated storage tank emitted significantly lower levels of methane and carbon dioxide compared to the untreated tank (-80% for CH4 and -75% for CO2). SOP LAGOON proved to be an effective additive in mitigating global methane emissions from stored liquid manure.
Article
Agriculture, Dairy & Animal Science
Maria Danaee Celis-Alvarez, Felipe Lopez-Gonzalez, Carlos Manuel Arriaga-Jordan, Lizbeth E. Robles-Jimenez, Manuel Gonzalez-Ronquillo
Summary: This study evaluated the effects of different dairy cow diets based on local feeding strategies on enteric methane emissions and crude protein surpluses in small-scale dairy systems. Results showed that diet composition, management, and pasture quality can significantly influence methane emissions and nutrient balances in dairy cows.
Article
Agriculture, Multidisciplinary
Rana Genedy, Jactone Ogejo
Summary: Storing manure can be beneficial for dairy farms in terms of maximizing fertilizer value, reducing costs, and minimizing environmental pollution. However, it also poses the risk of nitrogen loss through ammonia volatilization. This study quantifies ammonia loss from manure stored in a clay pit at a dairy farm and provides valuable information for developing mitigation strategies.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Computer Science, Interdisciplinary Applications
Ward Smith, Brian Grant, Zhiming Qi, Wentian He, Andrew VanderZaag, Craig F. Drury, Matthew Helmers
ENVIRONMENTAL MODELLING & SOFTWARE
(2020)
Article
Environmental Sciences
Vera K. Sokolov, Andrew VanderZaag, Jemaneh Habtewold, Kari Dunfield, Claudia Wagner-Riddle, Jason J. Venkiteswaran, Anna Crolla, Robert Gordon
Summary: The research results indicate that residual slurries of acidified manure become poor inoculants in subsequent storage, hence manure acidification has a long-term treatment effect in reducing CH4 production.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Agronomy
Qi Jing, Budong Qian, Gilles Belanger, Andrew VanderZaag, Guillaume Jego, Ward Smith, Brian Grant, Jiali Shang, Jiangui Liu, Wentian He, Kenneth Boote, Gerrit Hoogenboom
EUROPEAN JOURNAL OF AGRONOMY
(2020)
Article
Environmental Sciences
Zachary J. DeBruyn, Claudia Wagner-Riddle, Andrew VanderZaag
Article
Environmental Sciences
Etienne L. Le Riche, Andrew C. VanderZaag, Jeffrey D. Wood, Claudia Wagner-Riddle, Kari Dunfield, John McCabe, Robert Gordon
JOURNAL OF ENVIRONMENTAL QUALITY
(2020)
Article
Agriculture, Dairy & Animal Science
Jessie Cluett, Andrew C. VanderZaag, Hambaliou Balde, Sean McGinn, Earl Jenson, Alexander C. Hayes, Sylvanus Ekwe
Review
Agriculture, Multidisciplinary
Thomas Kupper, Christoph Hani, Albrecht Neftel, Chris Kincaid, Marcel Buhler, Barbara Amon, Andrew VanderZaag
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2020)
Article
Green & Sustainable Science & Technology
Mohammadali Baghbanzadeh, Jamie Savage, Hambaliou Balde, Majid Sartaj, Andrew C. VanderZaag, Niloofar Abdehagh, Benjamin Strehler
Summary: Microbial pre-treatment of extruded waste wood using Petronet Alfa and Petronet Omega significantly increased the amount of dissolved glucose and biomethane production, with optimal conditions identified. Results showed a 205% increase in dissolved glucose content and 88.9% and 70.2% increase in biomethane yield with Petronet Alfa and Petronet Omega treatment, respectively.
Article
Environmental Sciences
A. C. VanderZaag, A. Glenn, H. Balde
Summary: This study measured methane emissions from a single-cell earthen manure storage facility at a commercial swine farm in western Canada and found that methane emissions from swine manure in cold climates are considerably lower than previously estimated.
JOURNAL OF ENVIRONMENTAL QUALITY
(2022)
Article
Engineering, Environmental
Hambaliou Balde, Claudia Wagner-Riddle, Douglas MacDonald, Andrew VanderZaag
Summary: This study quantified the fugitive methane losses from two biogas facilities over one year and found that digestate storage was the main source of losses. Leakage and flaring also contributed to the overall methane losses. Facility B had higher losses, but the leakage emissions were reduced after dome membrane repair. Minimizing losses from digestate storage and avoiding leakage during abnormal operation are crucial for biogas to have a positive impact on greenhouse gas emissions.
Article
Agriculture, Dairy & Animal Science
Andrew VanderZaag, Shabtai Bittman, Maria Wellisch
Summary: This study used data from the 2016 Census of Agriculture to quantify the distribution of animals by farm size in the dairy, beef, swine, and poultry sectors. The results showed that the distribution of farm sizes and animal populations varied by livestock type and province, with skewed or bimodal patterns. Therefore, the concept of average farm size is not meaningful. Recognizing farm size diversity is crucial for developing effective policies, conducting appropriate research, and supporting farms of all sizes with suitable practices and technologies.
CANADIAN JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Environmental Sciences
Chih-Yu Hung, Efe Kemal Koc, Brian Grant, Ward Smith, Andrew VanderZaag
Summary: Methane emissions from liquid manure storage are currently estimated using a methane conversion factor (MCF) based on manure temperature inputs or air temperatures. However, differences between peak manure temperature and peak air temperature (T-diff) in warm seasons may result in inaccurate estimates. This study investigates the relationship between T-diff and the ratio of manure surface area to volume (R-s:v) and suggests using manure volume and surface area, along with removal frequency, to estimate T-diff and improve MCF estimates.
JOURNAL OF ENVIRONMENTAL QUALITY
(2023)
Article
Agriculture, Dairy & Animal Science
Andrew VanderZaag, Etienne Le Riche, Hambaliou Balde, Shafna Kallil, Veronique Ouellet, Edith Charbonneau, Trevor Coates, Tom Wright, Paul Luimes, Rob Gordon
Summary: This study evaluated the in-barn conditions of dairy barns and found that the temperature and humidity inside the barns were correlated with outdoor conditions. It is important to consider the barn design and select appropriate weather data for studies on heat stress.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agronomy
Wenyi Xu, Bo Elberling, Per Lennart Ambus
Summary: The frequency and extent of wildfires in the Arctic have been increasing due to climate change. In this study, researchers conducted experiments in West Greenland to investigate the long-term impacts of climate warming on post-fire carbon dioxide exchange in arctic tundra ecosystems. They found that fire increased soil organic phosphorus concentrations and burned areas remained a net CO2 source five years after the fire. However, with four to five years of summer warming, the burned areas turned into a net CO2 sink.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Yuanhang Yang, Jiabo Yin, Shengyu Kang, Louise J. Slater, Xihui Gu, Aliaksandr Volchak
Summary: This study investigates the impacts of water and heat stress on carbon uptake in China and explores the driving mechanisms of droughts using a machine learning model. The results show that droughts are mostly driven by atmospheric dryness, with precipitation, relative humidity, and temperature playing dominant roles. Water and heat stress have negative impacts on carbon assimilation, and drought occurrence is projected to increase significantly in the future. Improving ecosystem resilience to climate warming is crucial in mitigating the negative effects of droughts on carbon uptake.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Ningbo Cui, Shunsheng Zheng, Shouzheng Jiang, Mingjun Wang, Lu Zhao, Ziling He, Yu Feng, Yaosheng Wang, Daozhi Gong, Chunwei Liu, Rangjian Qiu
Summary: This study proposes a method to partition evapotranspiration (ET) into its components in agroforestry systems. The method is based on water-carbon coupling theory and flux conservation hypothesis. The results show that the partitioned components agree well with measurements from other sensors. The study also finds that atmospheric evaporation demand and vegetation factors greatly influence the components of ET, and increased tree leaf area limits understory grass transpiration.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Xinhao Li, Tianshan Zha, Andrew Black, Xin Jia, Rachhpal S. Jassal, Peng Liu, Yun Tian, Chuan Jin, Ruizhi Yang, Feng Zhang, Haiqun Yu, Jing Xie
Summary: With the rapid increase of urbanization, evapotranspiration (ET) in urban forests has become increasingly important in urban hydrology and climate. However, there is still a large uncertainty regarding the factors that regulate ET in urban areas. This study investigates the temporal variations of ET in an urban forest park in Beijing using the eddy-covariance technique. The results show that daily ET is close to zero during winter but reaches 3-6 mm day-1 in summer. Daily ET increases with vapor pressure deficit (VPD) and soil water content (SWC). Monthly ET increases linearly with normalized difference vegetation index and shows a strong correlation with surface conductance (gs), while exhibiting saturated responses to increasing monthly precipitation (PPT). Annual ET ranges from 326 to 566 mm, and soil water replenishment through PPT from the previous year is responsible for the generally higher monthly ET in spring relative to PPT. Biotic factors and PPT seasonality play essential roles in regulating ET at different scales.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Zhaogang Liu, Zhi Chen, Meng Yang, Tianxiang Hao, Guirui Yu, Xianjin Zhu, Weikang Zhang, Lexin Ma, Xiaojun Dou, Yong Lin, Wenxing Luo, Lang Han, Mingyu Sun, Shiping Chen, Gang Dong, Yanhong Gao, Yanbin Hao, Shicheng Jiang, Yingnian Li, Yuzhe Li, Shaomin Liu, Peili Shi, Junlei Tan, Yakun Tang, Xiaoping Xin, Fawei Zhang, Yangjian Zhang, Liang Zhao, Li Zhou, Zhilin Zhu
Summary: This study investigates the responses of temperate grassland (TG) and alpine grassland (AG) to climate change by studying carbon (C) fluxes across different regions in China. The results reveal that water factors consistently increase C fluxes, while temperature factors have opposite effects on TG and AG. The study enhances our understanding of C sinks and grassland sensitivity to climate change.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Peng Li, Huijie Li, Bingcheng Si, Tao Zhou, Chunhua Zhang, Min Li
Summary: This study mapped the distribution of forest age on the Chinese Loess Plateau using the LandTrendr algorithm. The results show that the LT algorithm is a convenient, efficient, and reliable method for identifying forest age. The findings have important implications for assessing and quantifying biomass and carbon sequestration in afforestation efforts on the Chinese Loess Plateau.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Review
Agronomy
Yean-Uk Kim, Heidi Webber, Samuel G. K. Adiku, Rogerio de S. Noia Junior, Jean-Charles Deswarte, Senthold Asseng, Frank Ewert
Summary: As climate change is expected to increase the intensity and frequency of extreme weather events, it is crucial to assess their impact on cropping systems and explore adaptation options. Process-based crop models (PBCMs) have improved in simulating the impacts of major extreme weather events, but still struggle to reproduce low crop yields under wet conditions. This article provides an overview of the yield-loss mechanisms of excessive rainfall in cereals and the associated modelling approaches, aiming to guide improvements in PBCMs.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Xiaodong Liu, Yingjie Feng, Xinyu Zhao, Zijie Cui, Peiling Liu, Xiuzhi Chen, Qianmei Zhang, Juxiu Liu
Summary: Understanding the impact of climate on litterfall production is crucial for simulating nutrient cycling in forest ecosystems. This study analyzed a 14-year litterfall dataset from two subtropical forests in South China and found that litterfall was mainly influenced by wind speed during the wet season and by temperature during the dry season. These findings have potential significance in improving our understanding of carbon and nutrient cycling in subtropical forest ecosystems under climate change conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Ruonan Chen, Liangyun Liu, Zhunqiao Liu, Xinjie Liu, Jongmin Kim, Hyun Seok Kim, Hojin Lee, Genghong Wu, Chenhui Guo, Lianhong Gu
Summary: Solar-induced chlorophyll fluorescence (SIF) has the potential to estimate gross primary production (GPP), but the quantitative relationship between them is not constant. In this study, a mechanistic model for SIF-based GPP estimation in evergreen needle forests (ENF) was developed, considering the seasonal variation in a key parameter of the model. The GPP estimates from this model were more accurate compared to other benchmark models, especially in extreme conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Jingyi Zhu, Yanzheng Yang, Nan Meng, Ruonan Li, Jinfeng Ma, Hua Zheng
Summary: This study developed a random forest model using climate station and satellite data to generate high-precision precipitation datasets for the Qinghai-Tibet Plateau. By incorporating multisource satellite data, the model achieved a significant enhancement in precipitation accuracy and showed promising results in regions with limited meteorological stations and substantial spatial heterogeneity in precipitation patterns.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Yulin Yan, Youngryel Ryu, Bolun Li, Benjamin Dechant, Sheir Afgen Zaheer, Minseok Kang
Summary: Sustainable rice farming practices are urgently needed to meet increasing food demand, cope with water scarcity, and mitigate climate change. Traditional farming methods that prioritize a single objective have proven to be insufficient, while simultaneously optimizing multiple competing objectives remains less explored. This study optimized farm management to increase rice yield, reduce irrigation water consumption, and tackle the dilemma of reducing GHG emissions. The results suggest that the optimized management can maintain or even increase crop yield, while reducing water demand and GHG emissions by more than 50%.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Sasha D. Hafner, Jesper N. Kamp, Johanna Pedersen
Summary: This study compared micrometeorological and wind tunnel measurements using a semi-empirical model to understand wind tunnel measurement error. The results showed differences in emission estimates between the two methods, but the ALFAM2 model was able to reproduce emission dynamics for both methods when considering differences in mass transfer. The study provides a template for integrating and comparing measurements from different methods, suggesting the use of wind tunnel measurements for model evaluation and parameter estimation.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Wenfang Xu, Wenping Yuan, Donghai Wu, Yao Zhang, Ruoque Shen, Xiaosheng Xia, Philippe Ciais, Juxiu Liu
Summary: In the summer of 2022, China experienced record-breaking heatwaves and droughts, which had a significant impact on plant growth. The study also found that heatwaves were more critical than droughts in limiting vegetation growth.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Jiaqi Guo, Xiaohong Liu, Wensen Ge, Liangju Zhao, Wenjie Fan, Xinyu Zhang, Qiangqiang Lu, Xiaoyu Xing, Zihan Zhou
Summary: Vegetation photosynthetic phenology is an important indicator for understanding the impacts of climate change on terrestrial carbon cycle. This study evaluated and compared the abilities of different spectral indices to model photosynthetic phenology, and found that NIRv and PRI are effective proxies for monitoring photosynthetic phenology.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)
Article
Agronomy
Arango Ruda Elizabeth, M. Altaf Arain
Summary: Temperate deciduous forests have significant impacts on regional and global water cycles. This study examined the effects of climate change and extreme weather events on the water use and evapotranspiration of a temperate deciduous forest in eastern North America. The results showed that photosynthetically active radiation and air temperature were the primary drivers of evapotranspiration, while vapor pressure deficit regulated water use efficiency. The study also found a changing trend in water use efficiency over the years, influenced by extreme weather conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2024)