Article
Multidisciplinary Sciences
C. Terrer, R. P. Phillips, B. A. Hungate, J. Rosende, J. Pett-Ridge, M. E. Craig, K. J. van Groenigen, T. F. Keenan, B. N. Sulman, B. D. Stocker, P. B. Reich, A. F. A. Pellegrini, E. Pendall, H. Zhang, R. D. Evans, Y. Carrillo, J. B. Fisher, K. Van Sundert, Sara Vicca, R. B. Jackson
Summary: Analysis of eCO2 experiments shows that the impact on SOC storage is best explained by a negative relationship with plant biomass, leading to a trade-off between different ecosystems. This highlights the need to revise projections of SOC in climate models.
Article
Soil Science
Fernanda C. C. Oliveira, Gabriel W. D. Ferreira, Jennifer A. J. Dungait, Elias F. Araujo, Emanuelle M. B. Soares, Ivo R. Silva
Summary: This study indicates that retaining harvest residues and different nitrogen availability significantly affect soil organic matter pools and microbial community structure in short-rotation plantations, contributing to increased SOC concentrations and POM-C content.
SOIL & TILLAGE RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Zachary Malone, Asmeret Asefaw Berhe, Rebecca Ryals
Summary: Organic matter amendment is used to improve soil quality in agricultural and urban settings, including supporting local food production and reclaiming disturbed soils in urban regions. Compost and biochar had the greatest improvement on soil organic matter content, while biosolids had greater nutrient benefits. The application of organic matter amendments also improved chemical and physical soil quality parameters. However, there are still gaps in the literature regarding the effects of amendments in urban gardens, soil depth greater than 30 cm, and the persistence of soil organic matter.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Teresia Svensson, Paul-Olivier Redon, Yves Thiry, Malin Montelius, David Bastviken
Summary: Research shows significant differences in chlorination rates among soils with different types of organic matter, with forest humus layers exhibiting the highest Clorg formation rates. Chlorination rates decrease rapidly with depth in grassland soils, while agricultural soils exhibit relatively low chlorination rates along the entire depth profile.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Snezana Jaksic, Jordana Ninkov, Stanko Milic, Jovica Vasin, Dusana Banjac, Darko Jaksic, Milorad Zivanov
Summary: This study examined the state of soil organic carbon (SOC) in vineyards compared to other agricultural land, the influence of different fertilization strategies and soil type on SOC content, and the rate of SOC change over time. Results showed that SOC stocks in vineyard soils were lower than the average for agricultural land in Serbia, with soil type playing a significant role in carbon storage. Adequate application of inorganic fertilizers or green manure combined with farmyard manure resulted in the highest SOC contents, while continuous use of inorganic fertilizer without organic amendments led to lower SOC levels in topsoil over time.
Article
Environmental Studies
Steven W. Leavitt, Li Cheng, David G. Williams, Talbot Brooks, Bruce A. Kimball, Paul J. Pinter, Gerard W. Wall, Michael J. Ottman, Allan D. Matthias, Eldor A. Paul, Thomas L. Thompson, Neal R. Adam
Summary: As atmospheric carbon dioxide concentrations continue to rise, the capacity of soils to retain carbon remains uncertain. In this study, a FACE experiment was conducted to examine the effects of elevated CO2 on sorghum growth and soil carbon. The results showed that CO2 enrichment led to an increase in soil organic carbon, indicating the potential of CO2 as a driver of soil carbon dynamics.
Article
Environmental Sciences
Yuhi Satoh, Shigehiro Ishizuka, Syuntaro Hiradate, Mariko Atarashi-Andoh, Hirohiko Nagano, Jun Koarashi
Summary: This study examined the applicability of the loss-on-ignition method to evaluate the stability of soil organic matter (SOM) and found that it is correlated with the residence time and soil properties, making it a feasible method for assessing SOM stability.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Victor Moinard, Florent Levavasseur, Sabine Houot
Summary: The study examines the potential of recycling urban organic waste in agriculture in peri-urban areas, finding that while local EOM recycling varies, it contributes significantly to C storage and partial nutrient substitution.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Geosciences, Multidisciplinary
Xiyang Wang, Fangfang Min, Dongsheng Yu, Zaijun Xin, Liang Li, Xiaohui Li, Xiaoyan Sun, Jianjun Pan
Summary: The study analyzed 373 samples from six regions in China's croplands using a 100-day incubation experiment. It found significant regional differences in the mean residence times of active and slow soil organic carbon pools, pointing to the influence of soil texture on these differences.
Article
Geosciences, Multidisciplinary
Cecilia Crespo, Nicolas Wyngaard, Hernan Sainz Rozas, Guillermo Studdert, Mirian Barraco, Vicente Gudelj, Pedro Barbagelata, Pablo Barbieri
Summary: The study assessed the impact of intensification practices on soil organic carbon content and stratification ratio. The results showed that intensification of crop sequences can increase soil organic carbon content and slow down the rate of soil organic carbon loss.
Article
Agriculture, Multidisciplinary
Summer R. A. Lockhart, Kent Keller, David Evans, Lynne A. Carpenter-Boggs, David R. Huggins
Summary: Organic agriculture can lead to higher concentrations and production rates of soil CO2 compared to no-till agriculture. However, the effect of agricultural management techniques on soil CO2 is not well understood.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Cao Han-bing, Xie Jun-yu, Hong Jie, Wang Xiang, Hu Wei, Hong Jian-ping
Summary: The study found that organic manure (MNPK) significantly increased soil organic carbon (SOC) and total nitrogen (TN) contents, especially within the macroaggregate fractions. The unprotected C fractions were more strongly correlated with SOC increase, especially cPOM-C, suggesting that SOC sequestration mainly occurred via cPOM-C in the calcareous soil studied.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2021)
Article
Biodiversity Conservation
Wolfram Buss, Heath Hasemer, Scott Ferguson, Justin Borevitz
Summary: The application of calcium- and magnesium-rich silicates in soil can capture and store carbon dioxide while also stabilizing soil organic matter. This study found that adding finely ground silicate rock mining residues to soil increased soil pH, inorganic carbon content, and soil-exchangeable calcium and magnesium. Furthermore, it increased mineral-associated organic matter by supplying secondary minerals and associated sites for organic matter sorption. However, the effect of silicate rock on microaggregates and carbon within was counteracted by the presence of plants, which decreased soil-exchangeable magnesium and calcium contents.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Soil Science
Yuqi Wei, Yingjun Zhang, Gail W. T. Wilson, Yafen Guo, Yixian Bi, Xue Xiong, Nan Liu
Summary: It was found in this study that trampling increased the transfer of litter C to the SOC pool, enhancing SOC formation, without inducing significant positive priming effects. This indicates that trampling plays an important role in SOC formation and stabilization, efficiently transferring litter C into the SOC pool.
Article
Environmental Sciences
Lori VandenEnden, Mark A. Anthony, Serita D. Frey, Myrna J. Simpson
Summary: Forest soils, acting as a carbon sink, are greatly affected by global environmental changes such as increasing temperatures and nitrogen deposition. The molecular composition of soil organic matter is altered by warming and nitrogen addition, impacting the decomposition process. Results suggest that the effects of nitrogen addition and warming on soil organic matter are not simply additive but interact in complex ways.
Article
Forestry
Kolby J. Jardine, Leticia O. Cobello, Liliane M. Teixeira, Malyia-Mason S. East, Sienna Levine, Bruno O. Gimenez, Emily Robles, Gustavo Spanner, Charlie Koven, Chongang Xu, Jeffrey M. Warren, Niro Higuchi, Nate McDowell, Gilberto Pastorello, Jeffrey Q. Chambers
Summary: Annual stem CO2 efflux increases with stem wood production rates and are inhibited by daily moisture stress in tropical forests. Fast-growing trees have higher carbon use efficiencies, and daytime stem CO2 efflux decreases during periods of high sap flow and transpiration. These findings suggest that diurnal dynamics of stem water status influence growth processes and respiratory metabolism.
TREES-STRUCTURE AND FUNCTION
(2022)
Article
Meteorology & Atmospheric Sciences
Tao Tang, Xuhui Lee, Keer Zhang, Lei Cai, David M. Lawrence, Elena Shevliakova
Summary: This study examines the impact of land-use and land-cover change (LULCC) on air temperature using CMIP6 model simulations. It finds that croplands are generally warmer in the tropics and cooler in the mid-high latitudes compared to primary and secondary land. However, the surface heating potential fails to accurately predict the subgrid temperature variation for different land tile configurations under SSP5-8.5 forcing scenarios. The study proposes using the relationship between latitudinal subgrid temperature variation and surface energy redistribution factor as a benchmark for land surface parameterizations and temperature prediction.
JOURNAL OF HYDROMETEOROLOGY
(2023)
Article
Environmental Sciences
Charles D. Koven, Benjamin M. Sanderson, Abigail L. S. Swann
Summary: We investigate the response of the Earth's climate and carbon system to sequential addition and removal of CO2, and find that the warming during emissions reduction and negative emissions phases is determined by the cumulative emissions and zero emissions commitment (ZEC). The ZEC controls the timing between peak cumulative emissions and peak temperature, highlighting its significance in climate policies. The relationship between the transient climate response and ZEC holds even when prior cumulative CO2 emissions are completely removed.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Yu Wang, Yuanyuan Huang, Lian Song, Jiahui Yuan, Wei Li, Yongguan Zhu, Scott X. Chang, Yiqi Luo, Philippe Ciais, Josep Penuelas, Julie Wolf, Barbara J. Cade-Menun, Shuijin Hu, Lei Wang, Dengjun Wang, Zengwei Yuan, Yujun Wang, Jishuang Zhang, Ye Tao, Shenqiang Wang, Gang Liu, Xiaoyuan Yan, Chunwu Zhu
Summary: Long-term free air carbon dioxide enrichment experiments on rice plants show that plant-available phosphorus declines in paddy soils as atmospheric CO2 increases. The decline in phosphorus concentration is attributed to the production of soil organic phosphorus that is not readily available to plants, as well as increased loss through crop harvest. These findings suggest that future CO2 scenarios may lead to reduced rice yields, particularly in low-income countries, unless additional phosphorus fertilizers are applied.
Article
Environmental Sciences
Yifan Cheng, Keith N. Musselman, Sean Swenson, David Lawrence, Joseph Hamman, Katherine Dagon, Daniel Kennedy, Andrew J. Newman
Summary: This study aims to develop a generalizable optimization methodology and workflow for the Community Terrestrial Systems Model (CTSM) in order to make complex land models more applicable in regional studies. By applying CTSM and using multi-objective optimization, improvements were made in river flow simulation accuracy while limited progress was achieved in snow simulation.
WATER RESOURCES RESEARCH
(2023)
Article
Biodiversity Conservation
Yan Sun, Daniel S. Goll, Yuanyuan Huang, Philippe Ciais, Ying-Ping Wang, Vladislav Bastrikov, Yilong Wang
Summary: Global change ecology is facing a bottleneck in the development of large-scale ecological models due to high computational requirements. To address this challenge, a machine-learning acceleration (MLA) tool is introduced to reduce the computation demand for equilibrating biogeochemical cycles in terrestrial biosphere models (TBMs). The MLA achieved a 77%-80% reduction in computation time by interpolating the equilibrated state of biogeochemical variables. Although there were minor biases in the MLA-derived equilibrium, it had a minimal impact on the predicted regional carbon balance.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Feng Tao, Yuanyuan Huang, Bruce A. Hungate, Stefano Manzoni, Serita D. Frey, Michael W. I. Schmidt, Markus Reichstein, Nuno Carvalhais, Philippe Ciais, Lifen Jiang, Johannes Lehmann, Ying-Ping Wang, Benjamin Z. Houlton, Bernhard Ahrens, Umakant Mishra, Gustaf Hugelius, Toby D. Hocking, Xingjie Lu, Zheng Shi, Kostiantyn Viatkin, Ronald Vargas, Yusuf Yigini, Christian Omuto, Ashish A. Malik, Guillermo Peralta, Rosa Cuevas-Corona, Luciano E. Di Paolo, Isabel Luotto, Cuijuan Liao, Yi-Shuang Liang, Vinisa S. Saynes, Xiaomeng Huang, Yiqi Luo
Summary: Soils store more carbon than other terrestrial ecosystems, but how soil organic carbon (SOC) forms and persists remains uncertain, making it challenging to predict its response to climate change. This study investigates the role of microbial carbon use efficiency (CUE) in SOC persistence and finds that it is at least four times more important than other factors in determining SOC storage. Understanding the environmental dependence of microbial processes underlying CUE may help predict SOC feedback to a changing climate.
Article
Plant Sciences
Julien Lamour, Kenneth J. Davidson, Kim S. Ely, Gilles Le Moguedec, Jeremiah A. Anderson, Qianyu Li, Osvaldo Calderon, Charles D. Koven, S. Joseph Wright, Anthony P. Walker, Shawn P. Serbin, Alistair Rogers
Summary: This study compared the representation of vertical gradients of key leaf traits in terrestrial biosphere models (TBMs) with measurements in a tropical forest, and quantified the impact of these gradients on simulated canopy-scale CO2 and water fluxes. The comparison showed divergence between the observed and modeled trait gradients, which influenced canopy-scale simulations of water vapor and CO2 exchange. The study suggests that current assumptions about leaf trait gradients in TBMs are not accurate for complex tropical forests.
Article
Environmental Sciences
Claudia Tebaldi, Michael Wehner, Ruby Leung, David Lawrence
Summary: We used six Earth system models to study changes in climate extremes under different land use change scenarios. The results show that changes in precipitation extremes are not significant, while temperature extremes show mixed results. Overall, our analysis suggests that the hypothesis to pair SSPs to RCPs in a flexible fashion is defensible, but further investigation is needed for some locations and indices.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Meteorology & Atmospheric Sciences
Cuijuan Liao, Xingjie Lu, Yuanyuan Huang, Feng Tao, David M. Lawrence, Charles D. Koven, Keith W. Oleson, William R. Wieder, Erik Kluzek, Xiaomeng Huang, Yiqi Luo
Summary: This study introduces a new Semi-Analytical Spin-Up (SASU) method to tackle the problem of steady state initialization in global biogeochemical cycle models. The experiments at the Brazil site showed that SASU is computationally 7 times more efficient than the traditional native dynamics (ND) spin-up method and globally it is 8 times more efficient than the accelerated decomposition spin-up and 50 times more efficient than ND. In summary, SASU achieves the highest computational efficiency for spin-up compared to other methods, making computationally costly studies possible for a better understanding of biogeochemical cycling under climate change.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2023)
Article
Geosciences, Multidisciplinary
Lingcheng Li, Yilin Fang, Zhonghua Zheng, Mingjie Shi, Marcos Longo, Charles D. Koven, Jennifer A. Holm, Rosie A. Fisher, Nate G. McDowell, Jeffrey Chambers, L. Ruby Leung
Summary: Tropical forest dynamics are crucial for global carbon, water, and energy cycles. Simulating the coexistence of different plant functional types in tropical forests remains challenging. This study improves the modeling of coexistence by using machine learning to optimize parameter selection and enhance model fidelity against observations. The results show that considering observed trait relationships can improve simulations, and optimizing parameters significantly increases the proportion of coexistence experiments.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Environmental Sciences
Danny M. Leung, Jasper F. Kok, Longlei Li, Gregory S. Okin, Catherine Prigent, Martina Klose, Carlos Perez Garcia-Pando, Laurent Menut, Natalie M. Mahowald, David M. Lawrence, Marcelo Chamecki
Summary: Desert dust is a major component of the atmosphere's aerosol burden and has significant impacts on the Earth system. However, current global climate models and land-surface models struggle to accurately represent dust emission processes due to inadequate representations of soil particle sizes, surface roughness elements, and boundary-layer characteristics. In this study, we address these issues by developing improved descriptions of these factors and propose a methodology to rescale lower-resolution dust emission simulations. Our revised dust emission parameterization shows substantial improvement in simulating dust emissions in both models.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Wenfu Tang, Simone Tilmes, David M. Lawrence, Fang Li, Cenlin He, Louisa K. Emmons, Rebecca R. Buchholz, Lili Xia
Summary: This study quantifies the future changes in wildfire burned area and carbon emissions under different socio-economic and solar geoengineering scenarios. The results show that geoengineering can effectively reduce wildfire occurrence globally by decreasing surface temperature and wind speed, and increasing relative humidity and soil water content. However, it also leads to a reduction in precipitation, which partially offsets the fire reduction effect. The impact on burned area is larger than on fire carbon emissions, and the stratospheric sulfate aerosol approach has a stronger fire-reducing effect compared to the solar irradiance reduction approach.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Geosciences, Multidisciplinary
Yongzhe Chen, Xiaoming Feng, Bojie Fu, Haozhi Ma, Constantin M. Zohner, Thomas W. Crowther, Yuanyuan Huang, Xutong Wu, Fangli Wei
Summary: By integrating multiple types of remote sensing observations with intensive field measurements, we characterized the changes in above- and belowground forest biomass carbon in China between 2002 and 2021 at a spatial resolution of 1 km. The total forest biomass carbon pool in China has increased at a rate of 114.5 +/- 16.3 TgC yr(-1) (approximately 1.1% yr(-1)) over the past 20 years. The most significant gains in forest biomass carbon stock occurred in central to southern China, including the southern Loess Plateau, Qinling mountains, southwestern karsts, and southeastern forests. The combined use of multi-source remote sensing data provides a valuable tool for assessing forest biomass carbon changes, but further research is needed to understand the drivers of observed woody biomass trends and their impact on biodiversity and ecosystem sustainability.
EARTH SYSTEM SCIENCE DATA
(2023)