Review of Palaeobotany and Palynology最新文献

{"title":"A rare permineralized Sphenophyllum (Sphenophyta, Sphenophyllales) stem containing abundant fungal remains from the Permian of Autun, central France","authors":"Thibault Durieux ,&nbsp;Carla J. Harper ,&nbsp;Anne-Laure Decombeix ,&nbsp;Michael Krings","doi":"10.1016/j.revpalbo.2025.105416","DOIUrl":"10.1016/j.revpalbo.2025.105416","url":null,"abstract":"<div><div>Present-day sphenophytes, i.e. the species of the genus <em>Equisetum</em>, are hosts to a variety of fungi. Although the Sphenophyta have a long evolutionary history and were far more diverse in the past than they are today, little is known about fungi associated with the fossil representatives of this group of free-sporing vascular plants. A permineralized <em>Sphenophyllum</em> stem from the early Permian Autun Basin in France contains several types of fungal remains in the xylem and periderm, including a <em>Perexiflasca</em>-like chytrid thallus, blastic inflations of hyphal tips resembling simple glomoid spores, basidiomycete hyphae with clamp connections, and compact, three-dimensional hyphal structures of unknown function and systematic affinity. Cell wall appositions in the periderm are evidence that at least one of the fungi colonized the stem while it was alive. A taphonomic peculiarity are trace fossils of hyphae in tracheids filled with an amber-colored to brown substance, perhaps a type of gum. This is only the second report of fungi from the aerial parts of a fossil sphenophyte. It adds to the growing body of evidence that diverse fungal communities were associated with the iconic plants of the Carboniferous and early Permian coal swamp forests.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105416"},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A 1100-years paleovegetation and paleoclimate record from western Türkiye linked to the North Atlantic Oscillation variability","authors":"Mesut Kolbüken ,&nbsp;Demet Biltekin ,&nbsp;Tom Veldkamp ,&nbsp;Bülent Arıkan ,&nbsp;Dursun Acar","doi":"10.1016/j.revpalbo.2025.105417","DOIUrl":"10.1016/j.revpalbo.2025.105417","url":null,"abstract":"<div><div>The North Atlantic Oscillation (NAO) plays a significant role on atmospheric circulation variability in the North Atlantic region, modulating the strength and the direction of the westerly winds belt and storm tracks, affecting the precipitation patterns in the Eastern Mediterranean Region. Studies indicate significant variations in the mode of the NAO over the last millennium, largely driven by changes in solar forcing. Here, we present a palynological record from Lake Marmara, western Türkiye and a quantitative reconstruction of paleoclimate variables based on the variations of pollen taxa over the last 1100 years. The palynological records and paleoclimate reconstruction from Lake Marmara indicate that the Medieval Warm Period (MWP) was marked by low arboreal pollen (AP), high seasonality, and drier conditions, whereas the Little Ice Age (LIA) between ∼<!--> <!-->300–100 cal. yr BP was characterized by high AP, low seasonality, and wetter conditions. The results demonstrate a stronger alignment with the NAO variability over the past millennium compared to the other proxy records in Türkiye.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105417"},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Last glacial–interglacial transition and early Holocene vegetation reconstruction: Pollen and plant macrofossil analysis from a Subantarctic forest sequence at 49°S.","authors":"Florencia Paula Bamonte,&nbsp;Marcos Emanuel Echeverría,&nbsp;María Alejandra Marcos","doi":"10.1016/j.revpalbo.2025.105415","DOIUrl":"10.1016/j.revpalbo.2025.105415","url":null,"abstract":"<div><div>To understand plant community succession; paleoenvironmental history, and to contribute to the regional knowledge base for the eastern area of the Southern Patagonian Icefield (SPIF), we present a paleoenvironmental reconstruction from the last glacial–interglacial transition to the early Holocene (18,500 to 9000 cal yr BP). This research was based on pollen and plant macrofossil analyses together with lithostratigraphy characterization from a sequence obtained at the Mallín Ciprés wetland (49°S; Southern Santa Cruz, Patagonia, Argentina). Between 18,500 and 16,000 cal yr BP, cold and arid conditions prevailed in the study area with dwarf-shrub communities dominated by <em>Ephedra</em>, likely under weakened Southern Westerly Winds (SWW). From 16,000 to 12,800 cal yr BP, a shift to grass-dwarf-shrub steppes occurred, along with increased moisture and expansion of <em>Nothofagus</em>, likely driven by stronger SWW contemporaneous with the Antarctic Cold Reversal. Between 12,800 and 9600 cal yr BP, we observe a western grass steppe with <em>Nothofagus</em> forest expansion, indicating warmer but relatively arid conditions under weaker westerly winds. <em>Pilgerodendron</em> began to establish at 10,500 cal yr BP, marking the onset of the wetland's modern dynamics. After 9600 cal yr BP, the significant spread of <em>Nothofagus</em> forest reflects increased moisture during early Holocene warming. This study addresses a critical gap in paleoecological knowledge of the eastern SPIF, providing insights into the influence of SWW variability, temperature fluctuations, and glacial dynamics on vegetation development between 48° and 52°S.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105415"},"PeriodicalIF":1.7,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Middle Devonian chitinozoan assemblages of northwestern Argentina and southern Bolivia: New biostratigraphic and palaeogeographical insights","authors":"Sonia C. Camina ,&nbsp;Claudia V. Rubinstein ,&nbsp;Anthony Butcher ,&nbsp;Victoria J. García Muro ,&nbsp;Gustavo Vergani ,&nbsp;Martín Pereira","doi":"10.1016/j.revpalbo.2025.105413","DOIUrl":"10.1016/j.revpalbo.2025.105413","url":null,"abstract":"<div><div>Chitinozoans from the Middle Devonian Los Monos Formation in the Tarija Basin (southern Bolivia and northwestern Argentina) have been analysed from the Tacobo TCB X-1001 (TCB-1001) and Ramos R-1011 (R-1011) boreholes. While the chitinozoan assemblages from the TCB-1001 borehole have been previously published, this contribution presents a comprehensive new analysis of the R-1011 material and integrates it into a refined biostratigraphic and palaeogeographical framework. Thirty-eight cutting samples were processed, yielding specimens in eighteen samples that allowed for taxonomic classification. A total of 11 genera and 40 species of chitinozoans were identified from both boreholes. Twenty species were identified in the R-1011 borehole, including the newly described species <em>Lagenochitina postpirum</em> n. sp. and <em>Ramochitina durandi</em> n. sp. Based on an integrated biostratigraphic analysis, three local chitinozoan biozones are proposed: the late Eifelian-early Givetian <em>Ramochitina candelariaensis</em>–<em>stiphrospinata</em> Biozone, the early Givetian <em>Ancyrochitina flexuosa</em>–<em>Ramochitina ramosi</em> Biozone, and the middle Givetian <em>Ancyrochitina cornigera</em>–<em>Ramochitina autasmirimense</em> Biozone. A palaeogeographical analysis using similarity indices indicates that there were no geographic barriers within the Tarija Basin and suggests interconnections among all Western Gondwana basins. However, the results for other palaeocontinents suggest that the Western Gondwana chitinozoan fauna did not mix with other faunas worldwide.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105413"},"PeriodicalIF":1.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulated charcoalification of Lycopodium spores: The usefulness of spore colour and chemistry for understanding the fossil record","authors":"Matthew S. Kent ,&nbsp;Teuntje P. Hollaar ,&nbsp;Will Meredith ,&nbsp;Hendrik Nowak ,&nbsp;Phillip E. Jardine ,&nbsp;Wesley T. Fraser ,&nbsp;Bas van de Schootbrugge ,&nbsp;Barry H. Lomax","doi":"10.1016/j.revpalbo.2025.105405","DOIUrl":"10.1016/j.revpalbo.2025.105405","url":null,"abstract":"<div><div>The fossil pollen and spore (sporomorph) record includes occurrences of darkened grains typically attributed to thermal maturation from geological processes. However, zones of sporomorph darkening and colour variability within samples sometimes coincide with mass extinction events. Although bimodal sporomorph coloration is relatively common, its abundance often increases markedly during such intervals. These observations have prompted alternative explanatory hypotheses suggesting either environmental stresses on parent plants or possibly reworking of sporomorphs. Here, we propose another explanation: variation in sporomorph colour and darkness may result from combustion in wildfires during large-scale ecological disturbances prior to fossilisation. To test this hypothesis, we investigate how pyrolysis might impact <em>Lycopodium</em> spore colour and darkness. Untreated, intact spores were combusted at temperature increments from 150 to 800 °C. We quantified spore colour by measuring red, green and blue (RGB) intensities and by converting them to Palynomorph Darkness Index (PDI) values. As well as measuring various physical attributes, we used Fourier-transform infrared (FTIR) spectroscopy to determine spore chemistry. As pyrolysis temperature increased, spores darkened, lost mass, and shrank. FTIR analysis revealed three distinct chemical states between non-pyrolysed spores and those heated to 375 °C. Physical changes correlated more strongly with temperature, forming different groupings than those of the chemical data, both partially explaining colour change due to pyrolysis. With these data, we establish a baseline for comparison in a future artificial thermal maturation study, which will help determine whether pre-diagenetic combustion could influence, and be preserved in, the physical and chemical properties of fossil sporomorphs.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105405"},"PeriodicalIF":1.7,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An opalised mid-Cretaceous flora from the Griman Creek Formation at lightning ridge, eastern Australia","authors":"Stephen McLoughlin ,&nbsp;Sherri Donaldson ,&nbsp;Christian Pott ,&nbsp;Elizabeth T. Smith","doi":"10.1016/j.revpalbo.2025.105403","DOIUrl":"10.1016/j.revpalbo.2025.105403","url":null,"abstract":"<div><div>A rich Albian–Cenomanian opalised plant fossil assemblage is described from the Griman Creek Formation at Lightning Ridge in the Surat Basin, northern New South Wales, Australia. The fossils are preserved predominantly as opal casts that retain few anatomical or micromorphological epidermal details. For this reason, most fossils are difficult to assign with higher taxonomic resolution than to plant families. Nevertheless, the assemblage appears to be dominated by scale-leafed cupressacean foliage and cones, with lesser proportions of araucariacean, podocarp and possibly cheirolepidacean conifers that likely constituted the middle and upper storeys of the palaeovegetation. Understorey ferns and sphenopsids are sparse. Angiosperms are notably absent but unusual pyramidal seeds may indicate the presence of the Bennettitales-Erdtmannithecales-Gnetales group in the palaeoflora. The plant fossils are co-preserved with a broad range of terrestrial and aquatic vertebrate and invertebrate remains that collectively attest to a coastal plain setting fringing the Surat Basin embayment of the epeiric ‘Eromanga Sea’, which flooded the epicratonic Great Artesian Basin complex during the Early Cretaceous. Several plant groups are shared with broadly coeval fossil floras from eastern Australia and New Zealand reflecting a fairly typical mid-Cretaceous middle- to high-latitude austral flora, but the Lightning Ridge assemblage notably lacks delicate and broad-leafed taxa, possibly owing to preservational and sampling biases. We highlight opportunities for the study of opalised plant fossils from various other assemblages in eastern Australia and note that analysis of future collections of carefully extracted specimens from the Lightning Ridge deposits offer the potential to yield micromorphological details.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"343 ","pages":"Article 105403"},"PeriodicalIF":1.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seed cones of Picea from the early Miocene Mula Basin, Sichuan Province, southwestern China and its biogeographical implication","authors":"Zhe Li ,&nbsp;Junling Dong ,&nbsp;Ai Song ,&nbsp;Yi Gao ,&nbsp;Jingxin Gao ,&nbsp;Haoran Zong ,&nbsp;Tao Su","doi":"10.1016/j.revpalbo.2025.105402","DOIUrl":"10.1016/j.revpalbo.2025.105402","url":null,"abstract":"<div><div><em>Picea</em> is widely distributed in the Hengduan Mountains of southwestern China nowadays, but its megafossil records there are still rare, which prevents a full understanding of the evolutionary history of <em>Picea</em> in this region. In this study, we describe well-preserved fossil seed cones of <em>Picea</em> from the early Miocene Mula Basin in Litang County, central Hengduan Mountains. These fossil seed cones are characterized by oblong or ovate seed cones, broadly obovate seed scales with bifid apices, longitudinal striations on their abaxial surfaces, and triangular-spathulate bracts. Detailed morphological comparisons allowed us to identify these specimens as <em>Picea</em> sp. (cf. <em>P. asperata</em>). This finding implies that the ancestor of modern species for <em>Picea</em> in the Hengduan Mountains might have survived there by the early Miocene, much earlier than molecular phylogenetic estimates that placed their divergence there during the Pliocene. Combined with previously discovered fossil species from the same sediment, the Mula flora represents a subalpine coniferous forest, which is similar to modern vegetation nearby. It suggests that the central Hengduan Mountains were warmer and more humid during the early Miocene than today, in agreement with the global climate condition at that time.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"342 ","pages":"Article 105402"},"PeriodicalIF":1.7,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cupressaceous woods in Jurassic geothermal deposits of the Deseado Massif, Patagonia, Argentina with evidence of nurse-log growth strategy","authors":"Sebastian Alejandro Molano ,&nbsp;Giovanni Cristian Nunes ,&nbsp;Josefina Bodnar ,&nbsp;Ignacio Hernán Escapa ,&nbsp;Juan Leandro García Massini ,&nbsp;Diego Guido","doi":"10.1016/j.revpalbo.2025.105400","DOIUrl":"10.1016/j.revpalbo.2025.105400","url":null,"abstract":"<div><div>The fossil wood record of Cupressaceae is extensive across the Mesozoic and Cenozoic, with a wide distribution in both hemispheres. However, the affinities of some fossil woods are uncertain due to incomplete descriptions, preservation issues, and anatomical traits of ambiguous interpretation. This study describes the anatomy and discusses the affinities of well-preserved Jurassic silicified woods. Samples were collected from geothermal deposits at the ‘Claudia’ locality in the Deseado Massif, Santa Cruz Province, Southern Patagonia, Argentina. The material corresponds to pycnoxylic and homoxylic secondary xylem characterized by a distinctive combination of traits, including mixed pitting on tracheids, cupressoid cross-field pits arranged in a cupressoid pattern, and abundant diffuse axial parenchyma. These characteristics are compatible with <em>Protocupressinoxylon</em> and suggest affinities with Cupressaceae. Additionally, chert blocks preserving fragments of these woods contain vegetative organs (e.g., leaves, roots) with affinities with this family, supporting the suggested affiliation. The studied woods are assigned to the open nomenclature <em>Protocupressinoxylon</em>-type wood, following the IAPT Fossil Committee's recommendations concerning the nomenclature problems of this name, while acknowledging the extensive historical and current use of it. Nurse logs are also recorded based on the presence of several stems and rootlets anchored to some of the studied woods, which expands the fossil record of this growth strategy.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"342 ","pages":"Article 105400"},"PeriodicalIF":1.7,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Franscinella riograndensis (Salvi et al.) gen. nov. et comb. nov.: The first record of a lycopsid with in situ spores for the Permian strata of the Paraná Basin, Brazil","authors":"Júlia Siqueira Carniere ,&nbsp;Ândrea Pozzebon-Silva ,&nbsp;Rafael Spiekermann ,&nbsp;Lilian Maia Leandro ,&nbsp;Margot Guerra-Sommer ,&nbsp;Dieter Uhl ,&nbsp;André Jasper","doi":"10.1016/j.revpalbo.2025.105401","DOIUrl":"10.1016/j.revpalbo.2025.105401","url":null,"abstract":"<div><div>The type material of <em>Lycopodites riograndensis</em> was revised alongside the description of new specimens, all originating from an Asselian ash-fall horizon from the Quitéria outcrop in southern Brazil, representing the type locality and stratum of that fossil-species. The adpression fossils were analysed using a set of techniques which revealed new information, including dichotomous isotomous branching, details of the tracheids of the vascular cylinder, and information on sporangial wall cells, in addition to well-preserved <em>in situ</em> isospores. Based on that, <em>Franscinella</em> gen. nov. is proposed to accommodate specimens previously assigned to <em>Lycopodites riograndensis</em>. This represents the first record of <em>in situ</em> spores for late Palaeozoic lycopsids of the Paraná Basin.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"342 ","pages":"Article 105401"},"PeriodicalIF":1.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sweetea milowensis gen. et sp. nov., a Middle Mississippian (Viséan) pteridosperm preserved in a coastal marsh setting, Hartselle Sandstone, Alabama","authors":"Robert A. Gastaldo","doi":"10.1016/j.revpalbo.2025.105399","DOIUrl":"10.1016/j.revpalbo.2025.105399","url":null,"abstract":"<div><div>The Mississippian (Lower Carboniferous) is a time of terrestrial plant diversification and experimentation of growth architectures. Yet, the majority of taxa in which leaves are known conform to a bipinnate, tripinnate, or quadripinnate leaf architecture. Simple, compound (pinnate) leaves are rare and uncommon. <em>Sweetea milowensis</em> is described as a new genus and species of a small, simple, compound leaf preserved as isolated, dehisced foliage in a Viséan marsh litter dominated by the cormose lycopsid <em>Harsellea dowensis</em> in the Black Warrior Basin, Alabama, USA. It is characterized by a naked petiole, exhibiting a flared, thickened base, and pinnatifid rachis comprised of bilobed and trilobed leaflets in a descending spacing toward its tip. <em>Sweetea</em> gen. nov. is compared with coeval pteridophyte and pteridosperm megaphyll taxa, and it is suggested that the size of the plant's leaf may have been in response to saltwater spray or tidal incursion into the back barrier marsh. Arguments against whether <em>Sweetea</em> could represent a heterophyllous form of a previously described taxon, or the possibility that it is the product of heteroblastic development, are discussed. A review of the 33 commonly reported monopinnate, bipinnate, tripinnate, and quadripinnate Mississippian morphotaxa shows that only five of these possess a monopinnate-leaf architecture. And, amongst these, <em>Sweetea</em> is unique.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"342 ","pages":"Article 105399"},"PeriodicalIF":1.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}