Global Change Biology最新文献

{"title":"Characterising Ecosystem Composition, Structure and Function of Alternative Stable States in Temperate Forests of South-Eastern Australia.","authors":"Aaron E Heap, Tom A Fairman, Trent D Penman, Lauren T Bennett","doi":"10.1111/gcb.70895","DOIUrl":"https://doi.org/10.1111/gcb.70895","url":null,"abstract":"<p><p>Increasingly frequent and intense wildfires threaten to push ecosystems beyond their ecological thresholds. Fire-adapted forests can be vulnerable to ecosystem conversion under shortening fire-return intervals. To evaluate the impacts of fire regime change, we contrasted Eucalyptus forests that retained canopy cover under tolerable regimes (reference forests) with alternative states of markedly reduced canopy. These alternative states established following short-interval wildfires and have persisted through subsequent fires. Alternative states were dominated by more uniform distributions of small trees (< 20 cm diameter) than reference states, with 97% fewer large trees (> 20 cm diameter). These changes in structure translated into declines in several key ecosystem functions. The loss of large, hollow-forming trees and limited Eucalyptus regeneration indicate long-term constraints on habitat availability for hollow-dependent fauna. Coarse woody debris mass was 38% lower in alternative states, indicating decreased resources for detritivores, fungi, and ground-dwelling mammals. Aboveground carbon stocks were reduced by 59%, with a much higher proportion (98%) stored in small trees than reference states (20%). Lower fire tolerance of small trees suggests a greater vulnerability of carbon stocks to subsequent fires in alternative states compared to reference states. These findings highlight the long-term ecological consequences of altered fire regimes. In addition, emphasising the management and restoration of forest structural integrity is essential to maintain ecosystem functions in fire-prone landscapes that are increasingly vulnerable under changing climates.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70895"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13140778/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global Vegetation Greening Is Exacerbating Soil Dryness.","authors":"Zhuoran Qu, Xiaoyan Li, Josep Peñuelas, Deliang Chen, Chiyuan Miao, Fangzhong Shi, Yuanhong Deng, Chao Yang","doi":"10.1111/gcb.70901","DOIUrl":"https://doi.org/10.1111/gcb.70901","url":null,"abstract":"<p><p>Recent decades have witnessed a concurrent increase in global vegetation greenness and soil dryness, with the latter manifested through intensified soil droughts and declining soil moisture trends. Despite previous insight into the damage of soil dryness on vegetation, whether and to what extent vegetation greening has in turn exacerbated soil dryness remains virtually unknown. This limits our ability to anticipate water resource crises and adapt to climate change. Here we evaluated the effects of vegetation greenness on soil drought (ESD) and soil moisture trend (EST) from 1982 to 2020. Results indicated that ESD and EST were negative in 71% and 59% of vegetated places, respectively, mainly manifested as exacerbated soil drought and accelerated soil drying trend induced by vegetation greening. Across the aridity gradient, both effects peaked in the semi-arid or dry sub-humid zone before diminishing toward the humid zone. And vegetation exerted stronger ESD and EST than both effects of precipitation and temperature in 19% and 44% of vegetated places, respectively. Notably, negative ESD and EST significantly intensified over time, driven primarily by increasing transpiration dominance in evapotranspiration partitioning. Yet, some Earth system models poorly simulated these effects of vegetation on soil dryness and even distorted their temporal evolution. These findings highlight the urgent need for sustainable ecological management to mitigate hydrological risk associated with global greening.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70901"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shrub Encroachment Constrains Precipitation-Driven Shifts in Herbaceous Biomass-Diversity Relationships.","authors":"Hailing Li, Xiaoan Zuo, Fons van der Plas, Ya Hu, Fangwei Hao, Hongling Yang, Xiangyun Li, Ping Yue, Shaokun Wang, Zhaobin Song, Rentao Liu, Jiansheng Ye, Yann Hautier, Josep Peñuelas","doi":"10.1111/gcb.70890","DOIUrl":"https://doi.org/10.1111/gcb.70890","url":null,"abstract":"<p><p>The relationship between herbaceous above ground biomass and species richness typically exhibits a unimodal pattern, shifting from positive under low-precipitation conditions to negative under high-precipitation conditions. While shrub encroachment generally reduces both herbaceous aboveground biomass and diversity, how shrubs mediate the herbaceous biomass-richness relationship under altered precipitation regimes remains unclear. By synthesizing data from globally distributed precipitation manipulation experiments, we reveal contrasting herbaceous biomass-diversity responses in grasslands and shrublands. In grasslands, reduced precipitation shifts the peak of the unimodal herbaceous biomass-richness curve toward lower biomass, whereas increased precipitation shifts it toward greater biomass. In contrast, the peak of the unimodal relationship in shrub-dominated systems shows no significant shifts across precipitation extremes. These global patterns are supported by a 5-year field experiment in a desert steppe in Northern China, which further shows that precipitation change strongly affects species richness through soil water availability in grasslands, while exerting weaker effects through modifications of the fast-slow leaf economics spectrum in shrublands. These findings demonstrate that shrub encroachment can constrain precipitation-induced changes in herbaceous biomass-diversity relationships, providing important insights into how woody plant expansion interacts with climate change to influence ecosystem structure and function.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70890"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147809004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consistent Positive Associations Between Landscape Diversity and Crop Yields.","authors":"Katherine S Nelson, Brennan Bean, Emily K Burchfield","doi":"10.1111/gcb.70894","DOIUrl":"https://doi.org/10.1111/gcb.70894","url":null,"abstract":"<p><p>Decades of evidence suggests that the relationship between landscape diversity and ecosystem productivity is positive, nonlinear, and saturating-with remarkable consistency across organisms and conditions. Despite this consensus, evidence of the impact of landscape diversity on agricultural productivity remains mixed. We use mixture modeling to systematically examine consistency in the relationship between landscape diversity and crop yields in the United States across heterogeneous model specifications for different major crops and approaches to operationalizing landscape diversity. While the diversity-productivity relationship varies across crops and landscape diversity metrics, we find a consistent (87%) positive association between landscape diversity and yields. Although not significant at a 95% credibility level, across all conditions examined highly diverse landscapes are associated with yields that are, on average, 2.7% higher than yields in highly simplified landscapes. Moreover, this relationship is not saturating, suggesting that the upper limits of positive landscape diversity effects have not been reached within contemporary U.S. cropping systems.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70894"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147809011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bridging the Energy Balance Gap in Eddy-Covariance Measurements: Insights From Standardized Network Data.","authors":"Giacomo Nicolini, David Durden, Luca Di Fiore, Christopher Florian, Simone Sabbatini, Bert Gielen, Arne Iserbyt, Benjamin Loubet, Ivan Mammarella, Adriana Mariotti, Maarten Op de Beeck, Caleb Slemmons, Carlo Trotta, Adam Young, Abad Chabbi, Iris Feigenwinter, Bernard Heinesch, Natalia Kowalska, Matthias Mauder, Ladislav Šigut, Michiel van der Molen, Flavio Bastos Campos, Daniel Berveiller, Christian Brümmer, Matthias Cuntz, Jean-Christophe Domec, Benjamin Dumont, Silvano Fares, Damiano Gianelle, Rasmus Jensen, Carmen Kalalian, Natascha Kljun, Holger Lange, Jean-Marc Limousin, Erik Lundin, Antonio Manco, Leonardo Montagnani, Eiko Nemitz, Matthias Peichl, Erkka Rinne, Marilyn Roland, Marius Schmidt, Guillaume Simioni, Abin Thomas, Caroline Vincke, Dario Papale","doi":"10.1111/gcb.70892","DOIUrl":"10.1111/gcb.70892","url":null,"abstract":"<p><p>The lack of energy balance closure in Eddy-Covariance (EC) measurements is a well-known, still unresolved challenge in micrometeorology, with energy balance closure (EBC) rates typically ranging between 60% and 80%. While numerous hypotheses have been proposed to explain this imbalance, the relative contributions of neglected energy storage terms, data quality and flux processing options remain insufficiently disentangled. Using standardized ICOS and NEON datasets, we show that a significant portion of the observed energy imbalance can be attributed to overlooked or inconsistently handled energy components and turbulent flux quality control. Using data drawn from 84 sites, we show that comprehensive energy accounting-including soil heat flux, storage terms (soil, air, biomass), photosynthetic energy demand, and strict quality filtering of turbulent fluxes-improved EBC by 16% on average, with site-specific gains up to 40%. However, we also identify a persistent residual imbalance that is unlikely to be resolved through methodological refinements or additional measurements alone, pointing to fundamental physical processes that are not accounted for in the standard measurement and processing. We argue that this unresolved imbalance should be explicitly acknowledged and bounded, rather than implicitly absorbed into correction schemes, and we outline practical guidance for diagnosing and interpreting EBC in standardized flux networks. This perspective evaluates methodological advances and residual uncertainties, providing an actionable framework for the appropriate use of EC energy fluxes in carbon, water, and climate research.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70892"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13137408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147808981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to \"Plastic Biofilms as Hotspots of Nitrogen Cycling in Estuarine Ecosystems: Comparative Ecological, Genomic, and Transcriptomic Analysis Across Substrates\".","authors":"","doi":"10.1111/gcb.70915","DOIUrl":"https://doi.org/10.1111/gcb.70915","url":null,"abstract":"","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70915"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147855688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil and Microbial Controls Jointly Regulate Elevational Patterns of Free-Living Nitrogen Fixation Rate and Its Temperature Sensitivity.","authors":"Xingming Zhang, Meifeng Deng, Yuntao Wu, Yuxuan Gao, Jie Luo, Shengnan Pan, Lingli Liu","doi":"10.1111/gcb.70897","DOIUrl":"https://doi.org/10.1111/gcb.70897","url":null,"abstract":"<p><p>Free-living nitrogen fixation (FLNF), like any enzyme-mediated process, is inherently temperature dependent. As FLNF contributes nearly half of global biological nitrogen fixation in natural ecosystems, its response to warming is crucial for predicting how ecosystems will cope with nutrient limitations under climate warming. However, current model studies on climate change often rely on simplified representations of biological nitrogen fixation based on empirical proxies, overlooking microbial thermal acclimation and community shifts across climate gradients. To address this gap, we quantified FLNF rates and their temperature sensitivity (Q₁₀) along a 1500 m elevational gradient in the eastern Himalayas to evaluate how climate, soil properties and diazotrophic (nitrogen-fixing) microbial communities jointly regulate FLNF. Our results showed that soil FLNF rates at site-specific MAT exhibited a unimodal pattern, peaking at mid-elevations, rather than following the expected monotonic increase with temperature. This pattern was jointly regulated by soil nutrient conditions and shifts in diazotrophic community composition. In contrast, the Q₁₀ of soil FLNF rates increased with the elevation, being more than twofold higher at the coldest sites. This pattern was primarily driven by elevation-induced shifts in diazotrophic community composition, with Q₁₀ closely associated with community structure and positively related to the relative abundance of Thermodesulfobacteriota. Together, these findings reveal a dual regulatory mechanism: soil nutrient availability constrains the baseline of FLNF rates both directly and indirectly via its effects on diazotrophic community composition, whereas community composition predominantly governs the magnitude of temperature sensitivity. The higher Q₁₀ in colder zones also suggests that warming may have a more profound impact on N inputs in nutrient-limited high-elevation and high-latitude ecosystems, although this effect is likely contingent on soil resource availability. We emphasize the importance of incorporating diazotrophic community structure and thermal traits into global biogeochemical models to improve predictions of future nitrogen budgets.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70897"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147808963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landscape Connectivity and Wildlife Access to Water Across an International Border: Barriers and Opportunities for Facilitating Transboundary Movement.","authors":"Bogdan Chivoiu, Erin L Koen, Michael J Osland, Christopher A Gabler, Jerald T Garrett, Ernesto Reyes, Stephanie A Bilodeau, Mitch A Sternberg, Miguel L Villarreal, Eric K Waller, Samuel N Chambers, Jude A Benavides, Robert S Lawson, James Martinez","doi":"10.1111/gcb.70888","DOIUrl":"10.1111/gcb.70888","url":null,"abstract":"<p><p>Rapid global acceleration in the construction of physical barriers along international borders has greatly influenced biodiversity and animal movement. Physical barriers can fragment landscapes, hinder access to essential resources, impact long-distance migrations, and inhibit dispersal and gene flow. The effects of physical barriers on animal movement and landscape connectivity can be exacerbated in dryland environments where access to water is a limiting factor. In recent decades, the construction of border barrier infrastructure has accelerated along the international boundary between the United States and Mexico. Here, we used a landscape connectivity model to investigate the effects of barriers on wildlife access to the river in the Lower Rio Grande Valley. We used a modified omnidirectional connectivity model to compare access to the river for three large, terrestrial mammal species across three border barrier scenarios: (1) a landscape without border barriers; (2) a landscape with the existing barrier system; and (3) a potential future landscape with a continuous barrier system. The existing barrier system includes many discrete sections of barrier within tracts of the Lower Rio Grande Valley National Wildlife Refuge or on lands associated with the region's flood control system. Our results indicate that the existing border barriers can impede connectivity and wildlife access to the river in some areas, while some existing gaps between border barrier sections can serve as conduits for wildlife movement and river access. Our future scenario results show how a potential continuous border barrier system could further impede wildlife access to the river. We discuss management and landscape conservation options for enhancing wildlife access to water and riverine habitats. Collectively, our results illustrate the potential effects of border barriers on wildlife movement and access to water, providing information that can be used to better anticipate and lessen the ecological impacts of transboundary barriers.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70888"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13155767/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147855701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial Community Traits and Necromass Dynamics Shape Soil Carbon Accumulation.","authors":"Wankun Pan, Sheng Tang, Wolfgang Wanek, Zhongkui Luo, Ji Chen, Yuanhe Yang, Tida Ge, Karina A Marsden, Guopeng Liang, David R Chadwick, Xinping Chen, Andrew S Gregory, Lianghuan Wu, Yongchao Liang, Davey L Jones, Qingxu Ma","doi":"10.1111/gcb.70906","DOIUrl":"https://doi.org/10.1111/gcb.70906","url":null,"abstract":"<p><p>Soil organic carbon (SOC) sequestration is vital for food security and climate mitigation. However, its long-term response to fertilisation remains unclear. Using the 180-year Broadbalk Experiment (the world's longest-running fertilisation trial; Rothamsted, UK), combined with ¹⁴C labelling and metagenomics, we identified fundamentally distinct mechanisms of SOC accumulation: a microbially mediated dual pathway under organic fertilisation versus a resource-limited pathway under inorganic fertilisation. Sustained organic inputs matched inorganic fertilisers in maintaining crop yields while increasing total SOC by 160% (relative to a no-fertilisation control), far exceeding the 26% gain under inorganic fertilisation. Mechanistically, the continuous supply of labile organic matter provided an energetic surplus, allowing copiotrophic microbial communities with high carbon use efficiency to reduce investment in energy-intensive enzyme synthesis. This metabolic efficiency facilitated a dual-pathway expansion, elevating dynamic particulate organic carbon (POC) from 1.4 to 7.5 g kg^-1, while microbial assimilation and necromass accumulation concurrently increased mineral-associated organic carbon (MAOC) from 6.8 to 21.5 g kg^-1. Conversely, inorganic fertilisation induced an oligotrophic 'mining' strategy, in which microorganisms upregulated the degradation of complex organic matter under carbon-limited conditions, restricting sustained SOC accumulation primarily to the MAOC pool. A global meta-analysis of field experiments (0-120 years) corroborated these temporal trajectories across diverse soil types, showing that SOC under organic fertilisation increases in a time-dependent manner, reaching a 77% gain after 80 years (three-fold greater than under inorganic inputs). Overall, organic fertilisation enhances total SOC via POC and MAOC accumulation, whereas inorganic fertilisation mainly increases MAOC. Long-term SOC persistence depends not only on carbon inputs, but also on microbial community traits and necromass dynamics, suggesting that aligning nutrient inputs with these biological mechanisms is critical for sustainable carbon sequestration.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70906"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intensifying Aridity Undermines the Role of Soil Biodiversity in Supporting Ecosystem Stability.","authors":"Jiejun Qi, Chunling Liang, Chengwei Zhang, Min Wang, Gehong Wei, Shuo Jiao","doi":"10.1111/gcb.70903","DOIUrl":"https://doi.org/10.1111/gcb.70903","url":null,"abstract":"<p><p>Biodiversity is widely recognized for enhancing ecosystem stability, yet its contribution is highly sensitive to climate change. However, whether and how climatic factors, particularly aridity, modulate the role of soil biodiversity in stabilizing ecosystems remains poorly understood. Here, we integrated a comprehensive soil survey of 265 dryland agricultural fields along a 3800 km east-west transect in China with a global meta-dataset encompassing 996 sites across six continents. Our analysis revealed a positive association between soil biodiversity and ecosystem stability, quantified using 11-year Normalized Difference Vegetation Index (NDVI) data (2012-2022). Critically, both our field data and global synthesis revealed that increasing aridity significantly weakened this biodiversity-stability relationship. The decline in soil microbial network complexity with increasing aridity partially explains this decoupling. Metagenomic analyses further showed that as aridity increased, microbial life history strategies shifted toward greater investment in stress tolerance at the expense of growth yield and resource acquisition. Together, our findings represent a substantial advance in revealing how intensifying aridity undermines the role of soil biodiversity in supporting ecosystem stability, and highlight the importance of microbial network complexity and life history strategies as key predictors of biodiversity-stability relationships under global change.</p>","PeriodicalId":175,"journal":{"name":"Global Change Biology","volume":"32 5","pages":"e70903"},"PeriodicalIF":12.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}