Article
Agronomy
Li Xu, Guangyao Gao, Xiaofeng Wang, Bojie Fu
Summary: This study investigates the spatiotemporal variations of climate variables, vegetation cover, and soil moisture along an aridity gradient in the drylands of northern China from 1981 to 2018. The study reveals the significant impacts of climate change and vegetation greening on soil moisture variability and identifies the influencing pathways. It also fills the knowledge gap in understanding the reasons for variations in both surface and root zone soil moisture in water-limited areas and highlights the potential risks of soil moisture depletion.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Ziyi Wang, Xiaohong Liu, Josep Penuelas, J. Julio Camarero, Xiaomin Zeng, Xueyan Liu, Liangju Zhao, Guobao Xu, Lixin Wang
Summary: This study investigates the long-term growth response and driving factors of mature Qinghai spruce trees in northwest China. The results show that improved nitrogen availability and favorable climate conditions benefit tree growth, and the negative effects of low nitrogen availability on growth can be mitigated by high atmospheric CO2 concentration and warmer-wetter climate conditions.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Yingying Zhu, Chen Chen, Han Y. H. Chen
Summary: Sapling recruitment within established stands plays a crucial role in the long-term functionality of forest ecosystems. However, the specific impacts and mechanisms of climate change on sapling recruitment remain unclear. This study used structural equation models to examine the direct and indirect effects of climate change on sapling recruitment probability. The results showed that temporal climate change had a significant total negative effect on sapling recruitment probability, with indirect effects mediated by tree mortality, growth, neighbourhood crowding, and functional and phylogenetic dissimilarities.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Long -Fei Chen, Shu-Ping Yang, Zhi-Bin He, Wen-Zhi Zhao, Jun-Qia Kong, Xiang-Yan Feng, Xiao-Gang Li
Summary: Uncertainty about winter carbon fluxes and their drivers hinders the accurate estimation of C budgets in high-latitude and high-altitude ecosystems. This study investigated soil respiration dynamics in an alpine forest in northwestern China and found that the patterns and mechanisms of carbon flux in winter differ from those in the growing season, with a stronger temperature response in winter.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
J. P. Bouillet, B. Bordron, J. P. Laclau, A. Robin, J. L. M. Goncalves, C. H. Abreu-Junior, P. C. O. Trivelin, Y. Nouvellon, G. le Maire
Summary: This study assessed the potential uptake of nitrogen, potassium, and calcium by Eucalyptus grandis trees in different lateral distances and depths. The results showed that only trees located near the injection point took up the 15NO3- tracer, while the Rb+, Sr2+, and Cs+ tracers were taken up at distances up to 11 meters. The study also revealed the potential of Eucalyptus trees to take up nutrients early, at long distances, and at depth.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Agronomy
Quentin Beauclaire, Bernard Heinesch, Bernard Longdoz
Summary: Soil water stress is a major constraint on agrosystem functioning, and this study investigated its effects on GPP limitations of potato crops. The results showed that the limitations originate from non-stomatal causes, emphasizing the need to improve the representation of photosynthesis processes in models for accurate predictions during drought.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Wenguang Sun, David Fleisher, Dennis Timlin, Chittaranjan Ray, Zhuangji Wang, Beegum Sahila, Vangimalla Reddy
Summary: This study used a modified soybean model to predict and assess the effects of CO2 enrichment on soybean yields, and achieved good accuracy in matching experimental data. The study highlights the importance of continuing to improve and test crop models, as well as implementing geospatially referenced adaptive strategies to better utilize elevated CO2 in the face of increasing drought.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Linfeng Li, Yanbin Hao, Weijin Wang, Joel A. Biederman, Zhenzhen Zheng, Yanfen Wang, Muyesaier Tudi, Ruyan Qian, Biao Zhang, Rongxiao Che, Xiaoning Song, Xiaoyong Cui, Zhihong Xu
Summary: High temporal precipitation variability, characterized by less frequent but larger-magnitude precipitation events, has been found to affect N2O emissions in semiarid grasslands. This study conducted a 3-year manipulative experiment and found that precipitation variability had direct and indirect effects on N2O emissions through soil abiotic properties and soil functional genes. The results suggest that semiarid grasslands may have negative feedbacks to future precipitation regimes with higher variability.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Qiurui Zhu, Eric A. Davidson, Jacob G. Hagedorn, Mark S. Castro, Thomas R. Fisher, Rebecca J. Fox, Shannon E. Brown, James W. Lewis
Summary: Drainage water management (DWM) is an effective practice to reduce nitrate export from croplands, but it may increase greenhouse gas emissions. This study evaluated the effects of DWM on greenhouse gas emissions and found no significant difference in emissions between DWM and non-DWM fields.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Xian-Jin Zhu, Gui-Rui Yu, Zhi Chen, Wei-Kang Zhang, Lang Han, Qiu-Feng Wang, Hua Qi, Meng Yang, Zhao-Gang Liu, Xiao-Jun Dou, Le-Xin Ma, Shi-Ping Chen, Shao-Min Liu, Hui-Min Wang, Jun-Hua Yan, Jun-Lei Tan, Fa-Wei Zhang, Feng-Hua Zhao, Ying-Nian Li, Yi-Ping Zhang, Pei-Li Shi, Jiao-Jun Zhu, Jia-Bing Wu, Zhong-Hui Zhao, Yan-Bin Hao, Li-Qing Sha, Yu-Cui Zhang, Shi-Cheng Jiang, Feng-Xue Gu, Zhi-Xiang Wu, Yang-Jian Zhang, Li Zhou, Ya-Kun Tang, Bing-Rui Jia, Yu-Qiang Li, Qing-Hai Song, Gang Dong, Yan-Hong Gao, Zheng De Jiang, Dan Sun, Jian-Lin Wang, Qi-Hua He, Xin-Hu Li, Fei Wang, Wen-Xue Wei, Zheng-Miao Deng, Xiang-Xiang Hao, Xiao-Li Liu, Xi-Feng Zhang, Zhi-Lin Zhu
Summary: This study analyzed the annual gross primary productivity (AGPP) in China and revealed a spatially increasing trend from 2000 to 2020. The results highlight the importance of ecosystem responses and their divergent pathways across different regions in determining AGPP trends. These findings provide valuable insights for quantifying regional carbon budgets.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Alba Lazaro-Gonzalez, Gabija Tamulaityte, Jorge Castro, Mercedes Uscola, Alexandro B. Leverkus
Summary: Climate change has a negative impact on the growth and development of oak seedlings, and larger acorns can partially counter-balance the effects of temperature increase.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Agronomy
I. M. Cely-Toro, L. Mortarini, C. Q. Dias Junior, U. Giostra, L. Buligon, G. A. Degrazia, D. Cava
Summary: This study investigates the influence of coherent vortices on turbulence structure above and below a dense plant canopy. Turbulence measurements collected at different levels within a coniferous forest on an Alpine Plateau were analyzed. The results show that the dominant time scale of momentum flux is mainly determined by the longitudinal wind velocity component under near-neutral conditions. In free convection and very stable conditions, the momentum transport is not influenced by coherent vortices generated at the canopy top.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Jacks M. T. Hausle, Jodi A. Forrester, Christopher E. Moorman, Melissa R. Martin
Summary: Planting rates and density affect the ecological and timber quality aspects of longleaf pine plantations. Higher planting density results in smaller tree diameters and larger stand basal area, while higher planting rates lead to lower branch density and lower straightness grades. Increasing stand density reduces canopy openness and ground cover, decreasing herbaceous plant cover.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Agronomy
Ronny Lauerwald, Nicolas Guilpart, Philippe Ciais, David Makowski
Summary: The EU's increasing domestic soybean production to reduce imports could lead to a significant increase in crop water deficits, especially in France, Italy, Hungary, and Romania. This is mainly due to the assumption of shorter root depth for soybean compared to maize.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Xi Qi, Paolo Cherubini, Kerstin Treydte, Mai-He Li, Zhengfang Wu, Hong S. He, Haibo Du, Keyan Fang, Matthias Saurer
Summary: This study examined the effects of tree age-related intrinsic water-use efficiency (iWUE) on tree growth under climate change in a boreal permafrost region in northeastern China. The results showed that mature trees were more sensitive to changing atmospheric CO2 concentrations and had a more conservative water use strategy compared to young trees.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Seyed Mohammad Moein Sadeghi, Touba Panahandeh, John T. Van Stan II, Shojaat Babapour, Jan Friesen
Summary: The degree of dieback in oak trees has a significant impact on rainfall partitioning and ecohydrological parameters, with more severe dieback resulting in higher throughfall and lower rainfall interception. Furthermore, dieback of oak trees also leads to significant changes in canopy and trunk ecohydrological parameters.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
G. Bellocchi, Z. Barcza, R. Hollos, M. Acutis, E. Bottyan, L. Doro, D. Hidy, E. Lellei-Kovacs, S. Ma, J. Minet, V. Pacsko, A. Perego, F. Ruget, G. Seddaiu, L. Wu, R. Sandor
Summary: Grassland models exhibit higher uncertainty compared to arable crop models due to complex interactions and undocumented sensitivity to environmental factors. This study assessed the impact of temperature, precipitation, and CO2 changes on soil water content, evapotranspiration, primary production, and biomass using a multi-model framework. The simulations showed general consistency in the direction of soil water content and evapotranspiration changes, but less agreement for primary production and biomass changes. The results suggest a paradigm shift in grassland modelling and highlight the importance of improving model representation of soil hydrology.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Agronomy
Yelognisse Agbohessou, Claire Delon, Eric Mougin, Manuela Grippa, Torbern Tagesson, Moussa Diedhiou, Seydina Ba, Daouda Ngom, Remi Vezy, Ousmane Ndiaye, Mohamed H. Assouma, Mamadou Diawara, Olivier Roupsard
Summary: Two process-based models were used to simulate agricultural activity and emissions in a semi-arid silvopastoral system in Senegal. The simulations showed that trees in the system can offset 18% to 41% of the greenhouse-gas emissions from livestock. These findings provide useful insights for guiding management policies in the Sahel region.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Forestry
Joseph D. Birch, Alicia Reiner, Matthew B. Dickinson, Jessica R. Miesel
Summary: Mastication, prescribed fire, and surface fuel pull-back treatments were evaluated in a mixed-conifer forest. The burned treatments had lower overstory mortality and resulted in enduring reductions in duff loadings. However, the other treatments were not effective in reducing surface fuel loadings.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Review
Forestry
Lauren S. Pile Knapp, David R. Coyle, Daniel C. Dey, Jacob S. Fraser, Todd Hutchinson, Michael A. Jenkins, Christel C. Kern, Benjamin O. Knapp, Dacoda Maddox, Cornelia Pinchot, G. Geoff Wang
Summary: Invasive plants have a significant impact on the forests in eastern North America, and the effectiveness of management strategies varies depending on the context. Long-term success requires comprehensive approaches to address the impacts of past land use and disturbance history.
FOREST ECOLOGY AND MANAGEMENT
(2023)
