Article
Biophysics
Sara Yumi Sassamoto Kurokawa, Gabriel Weiss, David Lapointe, Sylvain Delagrange, Sergio Rossi
Summary: Global warming is impacting the dynamics of sugar maple growth and maple syrup production timings. A study conducted in Quebec, Canada, assessed the temperatures that induce the beginning and ending of sap production in sugar maple trees. The findings suggest that sap production occurs mostly under temperatures ranging from -2 to 2 degrees C, and the duration of sap production is influenced by the timing of freeze and thaw events.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Article
Environmental Sciences
Luis Andres Guillen, Edward Brzostek, Brenden McNeil, Nanette Raczka, Brittany Casey, Nicolas Zegre
Summary: Forest species composition affects evapotranspiration and water availability downstream. Investigating the consequences of species shifts on water cycles is crucial for understanding ecosystem responses to climate change. The study found that black oak and sugar maple showed different sap velocity rates and responses to vapor pressure deficit. Future climate scenarios may reduce water resources in heavily populated areas downstream.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Qiao Zeng, Benjamin Marquis, Sylvain Delagrange, Ping Zhou, Shaoxiong Yuan, Jean-Daniel Sylvain, Patricia Raymond, Sergio Rossi
Summary: Global warming leads to a mismatch between bud break and frost events in sugar maple, suggesting that late frost may drive growth reactivation in this species.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Plant Sciences
Lungowe Mulozi, Amaranatha R. Vennapusa, Sathya Elavarthi, Oluwatomi E. Jacobs, Krishnanand P. Kulkarni, Purushothaman Natarajan, Umesh K. Reddy, Kalpalatha Melmaiee
Summary: Sugar maple trees are highly vulnerable to drought and this study investigates the physiological, biochemical, and molecular responses of sugar maple saplings to drought stress. The study finds that with increasing drought stress time, chlorophyll and Normalized Difference Vegetation Index decrease significantly. Biochemical changes include higher accumulation of malondialdehyde, proline, and peroxidase activity. Transcriptome analysis identifies a total of 14,099 differentially expressed genes, with transcription factors and stress-responsive genes being predominant.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Forestry
Shelby M. Conquer, Norman D. Yan, Shaun A. Watmough
Summary: Non-industrial wood ash is a potential forest soil nutrient supplement but its use is restricted in Canada. This study shows that application of non-industrial wood ash can significantly increase soil pH, base cation concentrations, and metal concentrations in the litter, but has minimal effect on the chemistry of sugar maple sap.
CANADIAN JOURNAL OF FOREST RESEARCH
(2023)
Review
Forestry
Tim Rademacher, Michael Cliche, Elise Bouchard, Sara Yumi Sassamoto Kurokawa, Joshua Rapp, Annie Deslauriers, Christian Messier, Sergio Rossi, Jerome Dupras, Elise Filotas, Sylvain Delagrange
Summary: Maple sugaring, a traditional activity, relies on tapping sugar and red maples for sap. The amount of sap and its sweetness can vary due to meteorological conditions. However, systematic investigation on the factors contributing to the variation in sap yield and sugar content has been lacking.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Geosciences, Multidisciplinary
Marcela Silva, Ashley M. Matheny, Valentijn R. N. Pauwels, Dimetre Triadis, Justine E. Missik, Gil Bohrer, Edoardo Daly
Summary: This article presents a model for simulating water fluxes across the soil-plant-atmosphere continuum. The model combines water transport pathways into one dimension and uses partial differential equations to describe water movement through the plant system. The model was tested and validated against observed data, demonstrating its accuracy and reliability.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Forestry
Catherine R. Henry, Michael B. Walters
Summary: Single-tree selection (STS) silviculture may not effectively recruit sugar maple in northern hardwood forests (NHFs) in the Great Lakes region, leading to recruitment failure. Age structure analysis of sugar maple supports the need for alternative management methods in parts of NHFs in the study region.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Forestry
Thibaud Andre-Alphonse, Claudele Ghotsa Mekontchou, Pascal Rochon, Audrey Maheu
Summary: This study aimed to understand the influence of residual basal area (BA) on transpiration in mixed temperate forest stands dominated by red maple (Acer rubrum) in southeastern Canada. The research found that residual BA had a significant impact on transpiration, with higher residual BA resulting in increased transpiration, especially under dry atmospheric conditions. The study highlights the need for better modeling of forest water budgets and partitioning overstory and understory evapotranspiration to develop more appropriate residual BA management strategies.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Review
Biochemistry & Molecular Biology
Mohamed Fawzy Ramadan, Haidy A. Gad, Mohamed A. Farag
Summary: Maple syrup is a famous food product produced from maple sap, with processing techniques affecting its quality and characteristics, and phenolics being the main health-promoting compounds.
JOURNAL OF FOOD BIOCHEMISTRY
(2021)
Article
Microscopy
James A. Robinson, Matt Rennie, Mike Clearwater, Daniel J. Holland, Abby K. van den Berg, Matthew Watson
Summary: We used synchrotron x-ray microtomography (microCT) to examine the internal structure of maple and birch saplings. Embolised vessels were extracted from reconstructed images through image analysis, and embolisms within the saplings were mapped out in three dimensions. We evaluated the size distribution of the embolisms, finding that larger embolisms compose the majority of the total embolised volume. Furthermore, we compared the radial distribution of embolisms in maple and birch saplings.
Article
Forestry
Jean-David Moore, Rock Ouimet
Summary: This study found that the application of lime can have a positive effect on sugar maple (SM) nutrition, vigor, and growth in stands affected by acid deposition. The positive effects were observed on all variables studied, with improvements in foliar Ca and Mg concentrations, crown dieback, and basal area increment. A lime dose of approximately 5 t/ha was found to be beneficial for SM health, sustainability, and growth for at least 20 years, indicating the importance of lime application in maple forests.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Review
Chemistry, Applied
Haidy A. Gad, Mohamed Fawzy Ramadan, Mohamed A. Farag
Summary: Maple syrup, a natural sweetener obtained by boiling tree sap from maple species, is primarily produced in Northeastern America, with Quebec (Canada) being the main producer, followed by the United States. Rich in nutritional value and natural phenolic compounds, maple syrup is a commonly used food ingredient. The quality control methods for maple syrup focus on physical and chemical properties, authentication, and detection of adulteration, with potential application to other syrup types with similar composition.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2021)
Article
Plant Sciences
Hongzhong Dang, Xueli Zhang, Hui Han, Shuai Chen, Mingyang Li
Summary: The study compared water use traits between Chinese pine and Mongolian Scots pine in northern China. It found that Mongolian Scots pine had higher canopy transpiration intensity, but its inter-annual variability was not significant. Chinese pine exhibited higher transpiration intensity under favorable soil moisture conditions, but decreased more sharply as soil dried out compared to Mongolian Scots pine.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Rossana Monica Ferrara, Maria Roberta Bruno, Pasquale Campi, Salvatore Camposeo, Gabriele De Carolis, Liliana Gaeta, Nicola Martinelli, Marcello Mastrorilli, Anna Francesca Modugno, Teresa Mongelli, Mariagrazia Piarulli, Sergio Ruggieri, Gianfranco Rana
Summary: This study measured transpiration in an olive orchard using the sap flow thermal dissipation method. The results showed that olive trees decrease transpiration when the available water in the soil is limited, and high atmospheric demand conditions lead to a decrease in tree transpiration when the water in the soil is amply available.
IRRIGATION SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Zhenzhong Zeng, Dashan Wang, Long Yang, Jie Wu, Alan D. Ziegler, Maofeng Liu, Philippe Ciais, Timothy D. Searchinger, Zong-Liang Yang, Deliang Chen, Anping Chen, Laurent Z. X. Li, Shilong Piao, David Taylor, Xitian Cai, Ming Pan, Liqing Peng, Peirong Lin, Drew Gower, Yu Feng, Chunmiao Zheng, Kaiyu Guan, Xu Lian, Tao Wang, Lang Wang, Su-Jong Jeong, Zhongwang Wei, Justin Sheffield, Kelly Caylor, Eric F. Wood
Summary: Deforestation in tropical mountain regions causes elevation-dependent warming, with the impact varying depending on altitude's role in albedo and evapotranspiration. The warming effect of deforestation decreases with higher elevation, affecting crop yields, land degradation, and nearby ecosystems, suggesting the need for future assessments to incorporate these additional impacts.
Article
Multidisciplinary Sciences
Kuang-Yu Chang, William J. Riley, Sara H. Knox, Robert B. Jackson, Gavin McNicol, Benjamin Poulter, Mika Aurela, Dennis Baldocchi, Sheel Bansal, Gil Bohrer, David Campbell, Alessandro Cescatti, Housen Chu, Kyle B. Delwiche, Ankur R. Desai, Eugenie Euskirchen, Thomas Friborg, Mathias Goeckede, Manuel Helbig, Kyle S. Hemes, Takashi Hirano, Hiroki Iwata, Minseok Kang, Trevor Keenan, Ken W. Krauss, Annalea Lohila, Ivan Mammarella, Bhaskar Mitra, Akira Miyata, Mats B. Nilsson, Asko Noormets, Walter C. Oechel, Dario Papale, Matthias Peichl, Michele L. Reba, Janne Rinne, Benjamin R. K. Runkle, Youngryel Ryu, Torsten Sachs, Karina V. R. Schaefer, Hans Peter Schmid, Narasinha Shurpali, Oliver Sonnentag, Angela C. Tang, Margaret S. Torn, Carlo Trotta, Eeva-Stiina Tuittila, Masahito Ueyama, Rodrigo Vargas, Timo Vesala, Lisamarie Windham-Myers, Zhen Zhang, Donatella Zona
Summary: Studies show that methane emissions in wetlands are influenced by temperature and are more sensitive to it later in the frost-free season. To improve global methane budget assessments, more detailed measurements of factors influencing methane production are needed.
NATURE COMMUNICATIONS
(2021)
Article
Environmental Sciences
N. T. Krell, B. E. Morgan, D. Gower, K. K. Caylor
Summary: The study highlights the importance of selecting drought-avoidant crop varieties in the face of increasing rainfall variability and intensity. Early maturing crops have shown to have lower likelihood of failure in water deficit conditions, despite the potential for higher-yielding, late maturing varieties. The historical probability of crop failure was lowest in the past due to higher rainfall totals, but is now increasing with reduced rainfall amounts.
WATER RESOURCES RESEARCH
(2021)
Article
Multidisciplinary Sciences
Cascade Tuholske, Benjamin S. Halpern, Gordon Blasco, Juan Carlos Villasenor, Melanie Frazier, Kelly Caylor
Summary: The pressures on coastal marine ecosystems from human activities are mainly from agricultural pollution and human sewage inputs, impacting both the ecosystems and the health and economic activities of coastal communities. There is a lack of comprehensive understanding on the impacts of human wastewater, necessitating further research and attention to address these pressing issues.
Article
Multidisciplinary Sciences
Cascade Tuholske, Kelly Caylor, Chris Funk, Andrew Verdin, Stuart Sweeney, Kathryn Grace, Pete Peterson, Tom Evans
Summary: The study highlights the increasing threat of extreme heat exposure to rapidly growing urban settlements globally, especially impacting the urban poor. By estimating daily urban population exposure to extreme heat from 1983 to 2016, the research shows that total urban warming plays a crucial role in the increase of exposure, outweighing the impact of urban population growth.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Natasha Krell, Frank Davenport, Laura Harrison, William Turner, Seth Peterson, Shraddhanand Shukla, Jessica Marter-Kenyon, Greg Husak, Tom Evans, Kelly Caylor
Summary: Accurate and operational indicators of the start of growing season are crucial for crop modeling and agricultural management. This study investigates the use of agro-meteorological variables and household-level attributes to predict planting dates of small-scale maize producers in central Kenya. The research findings suggest that EO variables perform as well as socio-economic variables in predicting planting dates, and short-term weather conditions may influence farmers' planting decisions.
CLIMATE RISK MANAGEMENT
(2022)
Article
Agronomy
Einara Zahn, Elie Bou-Zeid, Stephen P. Good, Gabriel G. Katul, Christoph K. Thomas, Khaled Ghannam, James A. Smith, Marcelo Chamecki, Nelson L. Dias, Jose D. Fuentes, Joseph G. Alfieri, Hyojung Kwon, Kelly K. Caylor, Zhiqiu Gao, Keir Soderberg, Nicolas E. Bambach, Lawrence E. Hipps, John H. Prueger, William P. Kustas
Summary: The partitioning of evapotranspiration and net ecosystem exchange into different components is crucial for understanding water cycle and carbon dioxide exchange. Different methods, including partitioning models and similarity-based approaches, have been evaluated and compared to provide insights into their strengths and weaknesses.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Agriculture, Multidisciplinary
Stacey Giroux, Patrick Kaminski, Kurt Waldman, Jordan Blekking, Tom Evans, Kelly K. Caylor
Summary: Smallholder farmers in Africa, particularly in rural Kenya, rely on advice from their peers in making decisions about maize seed choices. This study examines the social networks of maize seed advice seeking, as well as the factors influencing farmers' seeking behaviors, using exponential random graph modeling.
AGRICULTURAL SYSTEMS
(2023)
Article
Environmental Sciences
Romy Sabathier, Michael Bliss Singer, John C. Stella, Dar A. Roberts, Kelly K. Caylor, Kristin L. Jaeger, Julian D. Olden
Summary: Intermittent and ephemeral streams in dryland environments are important habitats for diverse aquatic and terrestrial life. Understanding the availability of water and its response to external factors is crucial for predicting the impacts of climate change and human activities. This paper analyzes conductivity data from sensors distributed along streams in Arizona, providing insights into flow permanence and its response to seasonal rainfall.
RIVER RESEARCH AND APPLICATIONS
(2023)
Article
Environmental Sciences
Elizabeth Forbes, Vincent Benenati, Spencer Frey, Mare Hirsch, George Koech, Grace Lewin, John Naisikie Mantas, Kelly Caylor
Summary: Soil carbon flux rates are important for calculating carbon budgets and determining if ecosystems are carbon sources or sinks. However, low-resolution datasets limit our ability to identify small-scale ecological factors that impact soil carbon dynamics. We developed a low-cost, autonomous soil carbon flux measurement method and deployed it in a challenging environment in Kenya, collecting over 10,000 flux measurements over two months. Our findings demonstrate the potential of DIY sensors to improve data resolution and enhance understanding of soil carbon dynamics on local and global scales.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Agronomy
Christopher L. Kibler, Anna T. Trugman, Dar A. Roberts, Christopher J. Still, Russell L. Scott, Kelly K. Caylor, John C. Stella, Michael Bliss Singer
Summary: Evapotranspiration regulates leaf temperature through energy flux partitioning. A mechanistic model is presented to predict leaf temperature based on the evaporative fraction. The model is validated using measurements from infrared radiometers. The study highlights the importance of evapotranspiration in regulating leaf temperature and its impact on plant physiological function.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Jeffrey M. Warren, Keita F. DeCarlo, Hassina Bilheux, Jean-Christophe Bilheux, Kelly Caylor
Summary: This study integrated root morphology and soil hydraulic characteristics to illustrate water distribution and uptake at the plant-soil interface. Different species of seedlings were grown in sand, and their root diameter and soil water dynamics were examined using neutron radiography. The rhizosphere showed species-independent processes, with consistently elevated water content at the root-soil edge interface and hysteresis as it transitioned to bulk soil. Water uptake per unit root surface area declined exponentially with root diameter, regardless of species. The findings emphasize the importance of considering species-independent hydrologic characteristics of the rhizosphere in a local spatial context and suggest avenues for improved integration of soil and root characteristics.
Article
Computer Science, Artificial Intelligence
Lyndon D. Estes, Su Ye, Lei Song, Boka Luo, J. Ronald Eastman, Zhenhua Meng, Qi Zhang, Dennis McRitchie, Stephanie R. Debats, Justus Muhando, Angeline H. Amukoa, Brian W. Kaloo, Jackson Makuru, Ben K. Mbatia, Isaac M. Muasa, Julius Mucha, Adelide M. Mugami, Judith M. Mugami, Francis W. Muinde, Fredrick M. Mwawaza, Jeff Ochieng, Charles J. Oduol, Purent Oduor, Thuo Wanjiku, Joseph G. Wanyoike, Ryan B. Avery, Kelly K. Caylor
Summary: Mapping the characteristics of Africa's smallholder-dominated croplands is essential for understanding food security and other concerns. However, accurately mapping these systems is challenging due to the mismatch between satellite sensors and smallholder fields, as well as the lack of high-quality labels. This study developed an approach to address these challenges and successfully mapped Ghana's croplands.
FRONTIERS IN ARTIFICIAL INTELLIGENCE
(2022)
Article
Development Studies
Corrie Hannah, Stacey Giroux, Natasha Krell, Sara Lopus, Laura E. McCann, Andrew Zimmer, Kelly K. Caylor, Tom P. Evans
Summary: Gender quotas are a solution to promote women's participation and leadership in public decision-making, Kenya's "two-thirds gender rule" has been moderately successful in increasing women's representation on water committees, but men still hold more higher-level leadership positions, indicating a leadership gap.
Article
Development Studies
N. T. Krell, S. A. Giroux, Z. Guido, C. Hannah, S. E. Lopus, K. K. Caylor, T. P. Evans
Summary: The study found that a high percentage of Kenyan farmers own mobile phones, with a subset using them to access agricultural and livestock information. Factors influencing the adoption of m-services include smartphone ownership and membership in farmer organizations, while age and income do not significantly affect usage. The results highlight the importance of designing m-services for both smartphone and basic phone users to improve dissemination of agro-meteorological information.
CLIMATE AND DEVELOPMENT
(2021)
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)
