Article
Environmental Sciences
Sofia Junttila, Julia Kelly, Natascha Kljun, Mika Aurela, Leif Klemedtsson, Annalea Lohila, Mats B. Nilsson, Janne Rinne, Eeva-Stiina Tuittila, Patrik Vestin, Per Weslien, Lars Eklundh
Summary: Remote sensing methods offer a promising opportunity to monitor CO2 exchange in peatland ecosystems at large scales. The study developed empirical models for CO2 balance, GPP, and ER using satellite data and showed high agreement with field data for GPP and ER. Further research is needed to investigate sources of spatial and temporal variation in CO2 fluxes.
Article
Ecology
Amy E. Pickard, Marcella Branagan, Mike F. Billett, Roxane Andersen, Kerry J. Dinsmore
Summary: This study examines the impact of peatland land management on aquatic carbon concentrations and fluxes in northern Scotland. It finds that drainage significantly affects the hydrological and biogeochemical functioning of peatland, while restoration measures can reduce carbon flux, but further monitoring is needed.
Article
Ecology
Michele Carbognani, Marcello Tomaselli, Alessandro Petraglia
Summary: Peatland ecosystems act as effective long-term carbon sinks, but climate changes could influence CO2 fluxes and the fate of carbon stored in these ecosystems remains uncertain. While most studies on peatland carbon fluxes have focused on high latitude sites, information on peatlands in temperate regions is scarce, despite the increasing threats from human activities. To address this knowledge gap, we investigated CO2 fluxes in an alpine peatland using light and dark incubations. We found that water table levels and photosynthetic radiation were the main drivers of ecosystem respiration and gross primary production, respectively, while net ecosystem CO2 exchange showed greater variation throughout the growing season. The interactions between drivers, including soil temperature and moisture, as well as vegetation type and plant functional diversity, played a crucial role in influencing CO2 fluxes. The joint variation of atmospheric and edaphic factors also regulated a significant part of the variation in CO2 emission and uptake processes. To accurately understand and predict CO2 dynamics in alpine peatlands, it is important to consider the interplays among ecological factors, especially in the context of anticipated climate and vegetation changes.
Article
Ecology
Alexandre Lhosmot, Adrien Jacotot, Marc Steinmann, Philippe Binet, Marie-Laure Toussaint, Sebastien Gogo, Daniel Gilbert, Sarah Coffinet, Fatima Laggoun-Deffarge, Guillaume Bertrand
Summary: This study investigates the variability of methane fluxes in a temperate mid-altitude Sphagnum-dominated peatland. The results show that water table and temperature variations at the seasonal and interannual scale have a significant impact on methane flux. The diurnal patterns indicate higher methane flux at night and lower flux at midday, with the influence of photosynthesis and physical parameters. This study emphasizes the importance of considering diurnal variations and vegetation effects before upscaling methane flux to longer time scales.
Article
Geosciences, Multidisciplinary
David Martin Belda, Peter Anthoni, David Warlind, Stefan Olin, Guy Schurgers, Jing Tang, Benjamin Smith, Almut Arneth
Summary: Land biosphere processes play a central role in the climate system, interacting with the atmosphere through feedback loops to modulate energy, water, and CO2 fluxes. This study modifies the LPJ-GUESS DGVM to enable its direct integration into an Earth system model, allowing for the simulation of diurnal land-atmosphere exchanges and providing surface boundary conditions for atmospheric models. Evaluation against FLUXNET2015 data shows reasonable agreement between observed and simulated fluxes, although differences in ecosystem function vary across land cover types.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Environmental Sciences
Arta Bardule, Aldis Butlers, Gints Spalva, Janis Ivanovs, Raitis Normunds Melniks, Ieva Licite, Andis Lazdins
Summary: The role of water tables in former peat extraction areas in greenhouse gas reduction has attracted attention. This study compared carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes in rewetted and flooded peat extraction areas and pristine peatland in Latvia. GHG fluxes were measured using a closed-chamber method combined with gas chromatography detection. Among the land-use types studied, rewetted peat extraction areas and pristine peatland had the highest CO2 fluxes, while flooded peat extraction areas had the lowest fluxes. Undisturbed peatland had the highest CH4 fluxes, followed by smaller fluxes in flooded and rewetted areas. N2O fluxes were negligible in all land-use types, with the highest fluxes in undisturbed peatland.
Article
Geosciences, Multidisciplinary
McKenzie A. Kuhn, Ruth K. Varner, David Bastviken, Patrick Crill, Sally MacIntyre, Merritt Turetsky, Katey Walter Anthony, Anthony D. McGuire, David Olefeldt
Summary: Methane emissions from boreal and arctic regions are globally significant and highly sensitive to climate change. The study highlights the differences in estimates of methane fluxes using bottom-up and top-down approaches for high-latitude regions. The comprehensive dataset BAWLD-CH4 provides valuable information for future research opportunities and model validation in high-latitude ecosystems.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Geosciences, Multidisciplinary
Qian Li, Sebastien Gogo, Fabien Leroy, Christophe Guimbaud, Fatima Laggoun-Defarge
Summary: The study found that simulated warming had a significant impact on the carbon fluxes in peatlands, particularly enhancing plant growth and increasing gross primary production. However, short-term experimental warming did not have a significant effect on annual net ecosystem carbon exchange and the carbon budget.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Ecology
David J. J. Millar, David J. J. Cooper, Kathleen A. A. Dwire, Robert M. M. Hubbard, Michael J. J. Ronayne, Joseph von Fischer
Summary: Climate change may have an impact on peatland-atmosphere exchange of greenhouse gases, especially in cold mountainous regions. This study used different climate scenarios to simulate hydrological dynamics and ecosystem-atmosphere carbon dioxide exchange in a mountain peatland. The results showed that increased air temperatures caused accelerated snowmelt and water table decline, leading to a decrease in net ecosystem production and a slight reduction in methane efflux.
Article
Forestry
Yanli Su, Jielin Zhang, Shouzhang Peng, Yongxia Ding
Summary: This study used a process-based dynamic vegetation model to simulate the ecological functions of vegetation in the Loess Plateau under different climate change scenarios. The results showed that future climate change would significantly impact the carbon stock, soil conservation, and water conservation functions of the vegetation. The study also found that the relationships between the ecological functions of the vegetation and the corresponding regions would change significantly under climate change.
Article
Biodiversity Conservation
Jon McCalmont, Lip Khoon Kho, Yit Arn Teh, Kennedy Lewis, Melanie Chocholek, Elisa Rumpang, Timothy Hill
Summary: The study found that the conversion of tropical peatlands to industrial agriculture results in significant CO2 emissions, but mature oil palm plantations have lower net emissions compared to newly converted ones. Despite biomass accumulation and reduced peat carbon loss over time, the vegetation systems remain a large net source of carbon to the atmosphere.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Environmental Sciences
Ricardo Hideo Taniwaki, Davi Gasparini Fernandes Cunha, Camila Bolfarini Bento, Luiz Antonio Martinelli, Emily H. Stanley, Solange Filoso, Murilo de Souza Ferreira, Marcus Vinicius Franca, Jose Wagner Ribeiro Junior, Luis Cesar Schiesari, Janaina Braga do Carmo
Summary: This study analyzed the effects of sugarcane cultivation on methane fluxes and concentrations in tropical streams in Southeastern Brazil, finding higher methane fluxes and concentrations during the summer and in streams with preserved catchments. Water chemistry factors such as dissolved oxygen, dissolved organic carbon, water velocity, and conductivity were found to influence methane concentrations in the studied streams.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xiaoguang Ouyang, Fen Guo, Shing Yip Lee
Summary: This study examined carbon stocks and fluxes in mangroves and found significant variations in carbon emissions between restored mangroves and those affected by aquaculture. The findings provide important insights for future research on mangrove carbon.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Soil Science
Jeanette Whitaker, Harriett R. Richardson, Nicholas J. Ostle, Alona Armstrong, Susan Waldron
Summary: This study found that the sensitivity of peatland carbon fluxes to climate change is influenced by plant functional types (PFT). Peat from under graminoid PFT emits more methane than peat from under bryophyte or ericoid PFT. Prior vegetation cover affects methane emissions, but does not affect peat abiotic or biotic properties.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Engineering, Environmental
Sergey N. Kirpotin, Olga A. Antoshkina, Alexandr E. Berezin, Samer Elshehawi, Angelica Feurdean, Elena D. Lapshina, Oleg S. Pokrovsky, Anna M. Peregon, Natalia M. Semenova, Franziska Tanneberger, Igor V. Volkov, Irina I. Volkova, Hans Joosten
Summary: Peatlands cover 3% of the land and play a crucial role in cooling the global climate by sequestering carbon. The Great Vasyugan Mire in West-Siberia, the largest peatland in the world, is of significant importance for biodiversity and ecosystem services. It should be designated as a UNESCO World Heritage Site and a Ramsar Wetland of International Importance to ensure its protection and conservation.
Article
Biodiversity Conservation
Yongshuo H. Fu, Xinxi Li, Shouzhi Chen, Zhaofei Wu, Jianrong Su, Xing Li, Shuaifeng Li, Jing Zhang, Jing Tang, Jingfeng Xiao
Summary: Autumn phenology in subtropical forests is mainly influenced by soil moisture, with solar radiation playing a larger role in northern forests. Under future climate warming conditions, the autumn photosynthetic transition dates are predicted to be delayed, but the delay is smaller compared to the current trend. Machine learning methods outperform process-based models in predicting these dates.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Xinchi Wang, Lian Feng, Wei Qi, Xiaobin Cai, Yi Zheng, Luke Gibson, Jing Tang, Xiao-peng Song, Junguo Liu, Chunmiao Zheng, Brett A. Bryan
Summary: This study reports the changes in global lake ice phenology, revealing a continuous loss of lake ice and providing a global lake ice phenology database. The generated database provides critical information for evaluating the consequences of historical and future lake ice changes.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Qi Guan, Lian Feng, Jing Tang, Edward Park, Tarig A. Ali, Yi Zheng
Summary: Global river systems are experiencing rapid changes in sediment transport under growing anthropogenic and climatic stresses. This study recalibrated a retrieval algorithm of suspended sediment concentrations and analyzed spatiotemporal patterns of sediment concentrations in the Yangtze and Mekong rivers. The results provide baseline information for the sustainable development of river sediment delivery.
WATER RESOURCES RESEARCH
(2022)
Article
Multidisciplinary Sciences
Xuehui Pi, Qiuqi Luo, Lian Feng, Yang Xu, Jing Tang, Xiuyu Liang, Enze Ma, Ran Cheng, Rasmus Fensholt, Martin Brandt, Xiaobin Cai, Luke Gibson, Junguo Liu, Chunmiao Zheng, Weifeng Li, Brett A. Bryan
Summary: Lakes are important natural resources and sources of carbon emissions, and they are undergoing rapid changes worldwide in response to climate change and human activities. Through a global characterization of lakes, we found that lake area has increased over the past four decades, with a significant contribution from reservoirs. Although small lakes account for a small percentage of the global lake area, they have a significant impact on the variability of total lake size. The increase in lake area has led to higher carbon emissions, with small lakes playing a major role.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Civil
Shouzhi Chen, Yongshuo H. Fu, Zhaofei Wu, Fanghua Hao, Zengchao Hao, Yahui Guo, Xiaojun Geng, Xiaoyan Li, Xuan Zhang, Jing Tang, Vijay P. Singh, Xuesong Zhang
Summary: The Soil and Water Assessment Tool (SWAT) model is widely used for simulating the water cycle and quantifying the impacts of climate change and human activities on hydrological processes. However, its representation of vegetation dynamics has been a major source of uncertainty. This study improves the SWAT model by incorporating dynamic growth start dates and heat requirements for vegetation growth based on long-term remote sensing data. The improved model shows significant improvements in simulating leaf area index (LAI) and evapotranspiration, indicating the importance of accurately representing phenological dates in vegetation growth modules.
JOURNAL OF HYDROLOGY
(2023)
Article
Ecology
John Bergkvist, Fredrik Lagergren, Maj-Lena Finnander Linderson, Paul Miller, Mats Lindeskog, Anna Maria Jonsson
Summary: Incorporation of a forest management module in LPJ-GUESS enables the study of management treatment effects on carbon cycle and forest ecosystem structure. The model is evaluated against observational data from Swedish National Forest Inventory at the regional scale and against eddy-covariance flux measurements from ICOS at the site scale. Results show that the model adequately represents standing volume in certain forest types in southern and central Sweden, but overestimates in northern Sweden. At the stand scale, the model produces mixed results for carbon fluxes when compared to eddy-covariance data, indicating the potential for further calibration and incorporation of additional site characteristics.
ECOLOGICAL MODELLING
(2023)
Article
Environmental Sciences
Shangrong Lin, Zhongmin Hu, Yingping Wang, Xiuzhi Chen, Bin He, Zhaoliang Song, Shaobo Sun, Chaoyang Wu, Yi Zheng, Xiaosheng Xia, Liyang Liu, Jing Tang, Qing Sun, Fortunat Joos, Wenping Yuan
Summary: This study found that current TEMs substantially underestimate the interannual variability (IAV) of GPP, especially in nonforest ecosystem types. One possible cause is that the models underestimate the changes of canopy physiology responding to climate change. The differences between the simulated and observed interannual variations of leaf area index (LAI) also contribute to the underestimation of IAV.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Multidisciplinary Sciences
Wenmin Zhang, Guy Schurgers, Josep Penuelas, Rasmus Fensholt, Hui Yang, Jing Tang, Xiaowei Tong, Philippe Ciais, Martin Brandt
Summary: The impact of tropical temperature fluctuations on the growth rate of atmospheric CO(2) is no longer significant in recent decades. This is primarily due to increased precipitation, which has weakened the link between the carbon cycle and tropical temperature variation.
NATURE COMMUNICATIONS
(2023)
Article
Astronomy & Astrophysics
Weiping Cao, Xuri Huang, Yezheng Hu, Yungui Xu, Jing Tang, Hai Yao
Summary: This paper proposes a scheme to improve the retrieval of surface waves from traffic noise recorded using linear arrays along traffic roads. By deconvolving the decomposed traffic noise wavefield, robust surface wave traces can be computed from a short noise record. With this scheme, high signal-to-noise ratio surface wave traces are achieved using short traffic noise traces.
EARTH AND SPACE SCIENCE
(2023)
Article
Ecology
Xiaoli Zhang, Lu Li, Yanfeng Liu, Yong Wu, Jing Tang, Weiheng Xu, Leiguang Wang, Guanglong Ou
Summary: In this study, four models (LSR, ANN, QR, and QRNN) were used to estimate Pinus densata forest AGB data. The QRNN showed the highest improvement in reducing the overestimation and underestimation of forest biomass, with the highest R-2 and lowest RMSE for the whole biomass segment. It also achieved high accuracy in different biomass segments, offering great potential for improving AGB estimation using optical remote sensing data.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2023)
Article
Soil Science
Hanbo Yun, Qing Zhu, Jing Tang, Wenxin Zhang, Deliang Chen, Philippe Ciais, Qingbai Wu, Bo Elberling
Summary: This study quantified the effects of warming and permafrost thawing on nitrogen availability and plant growth in permafrost-affected ecosystems. The results showed that most sites on the Tibetan Plateau have experienced warming and thawing, leading to increased inorganic nitrogen availability. Deep-rooted plant species were able to utilize the added nitrogen, and a feedback mechanism of climate warming was identified, where released nitrogen favored deep-rooted plants. These findings explain the important changes in plant composition and growth observed across the study sites.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Meteorology & Atmospheric Sciences
Jing Tang, Putian Zhou, Paul A. Miller, Guy Schurgers, Adrian Gustafson, Risto Makkonen, Yongshuo H. Fu, Riikka Rinnan
Summary: Strong, ongoing high-latitude warming is causing changes to vegetation composition and plant productivity, modifying plant emissions of biogenic volatile organic compounds (BVOCs). Climate feedback resulting from BVOCs as precursors of atmospheric aerosols could be more important in the sparsely populated high latitudes with clean background air. We quantitatively assess changes in vegetation composition, BVOC emissions, and secondary organic aerosol (SOA) formation under different climate scenarios and find that warming-induced vegetation changes largely determine the spatial patterns of future BVOC impacts on SOA.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Ecology
Qi Guan, Jing Tang, Lian Feng, Stefan Olin, Guy Schurgers
Summary: In the past 50 years, the use of chemical fertilizers in agricultural ecosystems on the Yangtze Plain has increased significantly, potentially leading to eutrophication in freshwater ecosystems. However, the long-term trends of nitrogen dynamics and their impact on eutrophication in this region remain poorly studied. This study investigated the nitrogen use efficiency and nitrogen leaching in the Yangtze Plain from 1979 to 2018, and found a decrease in agricultural nitrogen use efficiency and an increase in nitrogen leaching. The study also showed the importance of terrestrial nutrient sources in the eutrophication changes of the lakes in the Yangtze Plain, calling for region-specific nutrient management to improve water quality.
Review
Geosciences, Multidisciplinary
H. E. Markus Meier, Madline Kniebusch, Christian Dieterich, Matthias Groeger, Eduardo Zorita, Ragnar Elmgren, Kai Myrberg, Markus P. Ahola, Alena Bartosova, Erik Bonsdorff, Florian Boergel, Rene Capell, Ida Carlen, Thomas Carlund, Jacob Carstensen, Ole B. Christensen, Volker Dierschke, Claudia Frauen, Morten Frederiksen, Elie Gaget, Anders Galatius, Jari J. Haapala, Antti Halkka, Gustaf Hugelius, Birgit Huenicke, Jaak Jaagus, Mart Jussi, Jukka Kayhko, Nina Kirchner, Erik Kjellstrom, Karol Kulinski, Andreas Lehmann, Goran Lindstrom, Wilhelm May, Paul A. Miller, Volker Mohrholz, Barbel Muller-Karulis, Diego Pavon-Jordan, Markus Quante, Marcus Reckermann, Anna Rutgersson, Oleg P. Savchuk, Martin Stendel, Laura Tuomi, Markku Viitasalo, Ralf Weisse, Wenyan Zhang
Summary: This study summarises and assesses the effects of global warming on past and future climate changes in the Baltic Sea region based on recent assessment reports and literature. While the main conclusions from earlier assessments still remain valid, new observational records and improved models have provided a better understanding of changes in certain variables and the influence of natural variability. However, challenges remain in attributing observed changes in marine ecosystems to climate change and reconciling differences in cloudiness trends between global and regional models.
EARTH SYSTEM DYNAMICS
(2022)
Article
Green & Sustainable Science & Technology
Chunjing Qiu, Philippe Ciais, Dan Zhu, Bertrand Guenet, Jinfeng Chang, Nitin Chaudhary, Thomas Kleinen, XinYu Li, Jurek Muller, Yi Xi, Wenxin Zhang, Ashley Ballantyne, Simon C. Brewer, Victor Brovkin, Dan J. Charman, Adrian Gustafson, Angela Gallego-Sala, Thomas Gasser, Joseph Holden, Fortunat Joos, Min Jung Kwon, Ronny Lauerwald, Paul A. Miller, Shushi Peng, Susan Page, Benjamin Smith, Benjamin D. Stocker, A. Britta K. Sannel, Elodie Salmon, Guy Schurgers, Narasinha J. Shurpali, David Warlind, Sebastian Westermann
Summary: Northern peatlands are at risk from climate warming and soil drying, which could result in increased CO2 emissions and methane release. Our study highlights the importance of understanding the potential carbon losses from northern peatlands in future warming scenarios.
