Perleididae is a group of stem neopterygian fishes known only from the Triassic.Here,we report the discovery of a new perleidid,Teffichthys wui sp.nov.,based on six well-preserved specimens from the late Smithian(Olen...Perleididae is a group of stem neopterygian fishes known only from the Triassic.Here,we report the discovery of a new perleidid,Teffichthys wui sp.nov.,based on six well-preserved specimens from the late Smithian(Olenekian,Early Triassic)marine deposits of Jurong,Jiangsu and Chaohu,Anhui,China.This new discovery documents the third and youngest species of Teffichthys,which is slightly younger than the Dienerian(Induan)T.elegans from Guizhou and the early Smithian T.madagascariensis from Madagascar.The new species shows diagnostic features of Teffichthys(presence of a spiracular,38-41 lateral line scales,and no more than three epaxial rays in the caudal fin)but differs from T.madagascariensis and T.elegans in some autapomorphies(e.g.,a horizontal opercle/subopercle contact and smooth scales with a nearly straight posterior margin).The diagnostic features for the genus Teffichthys and the family Perleididae are emended based on detailed comparisons of the new taxon with other perleidids.The phylogenetic relationships of perleidids with other stem neopterygians are discussed using a cladistic approach,and the results provide new insights into the phylogeny and classification of main stem neopterygian clades.展开更多
As a characteristic sedimentary type,molartooth carbonatites veins(MCV)can be found in almost all the Neoproterozoic carbonatite strata in the North Anhui and Jiangsu Provinces.But their forming mechanism is still an ...As a characteristic sedimentary type,molartooth carbonatites veins(MCV)can be found in almost all the Neoproterozoic carbonatite strata in the North Anhui and Jiangsu Provinces.But their forming mechanism is still an enigma,and more than four incompatible forming hypotheses have been put forward according to the structures,mineral components and elements of the MCV.展开更多
As a traditional local opera,Huagu Opera in southern Anhui have faced a threat of dying out as a result of the change of social and ecological environment in the rural areas of China as well as the impact of multiple ...As a traditional local opera,Huagu Opera in southern Anhui have faced a threat of dying out as a result of the change of social and ecological environment in the rural areas of China as well as the impact of multiple entertainment since the reform and openingup.Based on the analysis of its current situation,this paper proposes ways to preserve and inherit Huagu Opera by combining traditional means with digital collection technology.展开更多
Shaxi porphyry Cu-Au deposit was one of the important discoveries of the exploration in the middle-lower reaches of Yangtze River in China in 1970s. Gold occurrence in the Shaxi porphyry copper-gold deposit (central...Shaxi porphyry Cu-Au deposit was one of the important discoveries of the exploration in the middle-lower reaches of Yangtze River in China in 1970s. Gold occurrence in the Shaxi porphyry copper-gold deposit (central (Anhui) province, eastern China) was investigated by means of microscope analyses, EPMA and PIXE. Combined with geological and mineralogical methods, the characteristics of occurrence of gold in the large scale sulfide mineralization in this region were fully investigated. The results show that gold distributes in both chalcopyrite and pyrite as submicroscopic inclusions (less than 1 μm) . Au is positively correlated with As, Fe, S, Cu, Zn and Ti. The condition of gold transformation in thermal fluid system controlling deposition of Au in the region is probably the oxidation potential of the red sedimentary rocks of shale and fine grain sandstone which may be crucial as a geochemical barrier to the reducing fluid. This study lays foundation for the further research and exploration of the porphyry copper-gold deposit both theoretically and practically in the lower reaches of Yangtze region.展开更多
深入解析资源型城市生态系统服务供需关系、识别生态管理分区对优化资源型城市生态修复策略、完善国土空间规划体系以及促进资源高效配置具有重要意义。采用生态系统服务和权衡综合评估(Integrated Valuation of Ecosystem Services and...深入解析资源型城市生态系统服务供需关系、识别生态管理分区对优化资源型城市生态修复策略、完善国土空间规划体系以及促进资源高效配置具有重要意义。采用生态系统服务和权衡综合评估(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)仿真模型、皮尔逊系数及四象限模型,揭示安徽省资源型城市水源涵养(WC)、固碳(CS)及粮食(FP)生态系统服务供需的时空变化、权衡协同关系及空间匹配模式,并据此构建生态管理分区框架。结果显示:(1)在2011—2023年,安徽省资源型城市生态系统服务中WC的供给和供需指数均呈上升趋势,需求呈下降趋势;CS的供给和供需指数均呈下降趋势,需求呈上升趋势;FP的供给、需求和供需指数均呈上升趋势;在空间分异上,WC供需指数呈现南高北低梯度格局,CS供需指数空间分布较为均衡,FP供需指数呈现南低北高格局。(2)就供需指数而言,WC生态系统服务与CS为协同关系,FP与WC、CS均为权衡关系。WC、CS及FP均以低-低空间匹配模式为主。(3)粮食生产区为主要功能区,养护为主要管理策略,重点保护为主要管控等级,粮食重点养护区为生态管理分区主要结果。研究可为缓解资源型城市“生态-生产”矛盾、优化国土空间保护格局及促进生态资产价值转化提供决策参考依据。展开更多
文摘Perleididae is a group of stem neopterygian fishes known only from the Triassic.Here,we report the discovery of a new perleidid,Teffichthys wui sp.nov.,based on six well-preserved specimens from the late Smithian(Olenekian,Early Triassic)marine deposits of Jurong,Jiangsu and Chaohu,Anhui,China.This new discovery documents the third and youngest species of Teffichthys,which is slightly younger than the Dienerian(Induan)T.elegans from Guizhou and the early Smithian T.madagascariensis from Madagascar.The new species shows diagnostic features of Teffichthys(presence of a spiracular,38-41 lateral line scales,and no more than three epaxial rays in the caudal fin)but differs from T.madagascariensis and T.elegans in some autapomorphies(e.g.,a horizontal opercle/subopercle contact and smooth scales with a nearly straight posterior margin).The diagnostic features for the genus Teffichthys and the family Perleididae are emended based on detailed comparisons of the new taxon with other perleidids.The phylogenetic relationships of perleidids with other stem neopterygians are discussed using a cladistic approach,and the results provide new insights into the phylogeny and classification of main stem neopterygian clades.
文摘As a characteristic sedimentary type,molartooth carbonatites veins(MCV)can be found in almost all the Neoproterozoic carbonatite strata in the North Anhui and Jiangsu Provinces.But their forming mechanism is still an enigma,and more than four incompatible forming hypotheses have been put forward according to the structures,mineral components and elements of the MCV.
基金Anhui Special Funds for Domestic Visiting Scholars(gxfxZD2016245)Anhui Social Science Key Research Project(SK2016A0933)
文摘As a traditional local opera,Huagu Opera in southern Anhui have faced a threat of dying out as a result of the change of social and ecological environment in the rural areas of China as well as the impact of multiple entertainment since the reform and openingup.Based on the analysis of its current situation,this paper proposes ways to preserve and inherit Huagu Opera by combining traditional means with digital collection technology.
文摘Shaxi porphyry Cu-Au deposit was one of the important discoveries of the exploration in the middle-lower reaches of Yangtze River in China in 1970s. Gold occurrence in the Shaxi porphyry copper-gold deposit (central (Anhui) province, eastern China) was investigated by means of microscope analyses, EPMA and PIXE. Combined with geological and mineralogical methods, the characteristics of occurrence of gold in the large scale sulfide mineralization in this region were fully investigated. The results show that gold distributes in both chalcopyrite and pyrite as submicroscopic inclusions (less than 1 μm) . Au is positively correlated with As, Fe, S, Cu, Zn and Ti. The condition of gold transformation in thermal fluid system controlling deposition of Au in the region is probably the oxidation potential of the red sedimentary rocks of shale and fine grain sandstone which may be crucial as a geochemical barrier to the reducing fluid. This study lays foundation for the further research and exploration of the porphyry copper-gold deposit both theoretically and practically in the lower reaches of Yangtze region.
文摘深入解析资源型城市生态系统服务供需关系、识别生态管理分区对优化资源型城市生态修复策略、完善国土空间规划体系以及促进资源高效配置具有重要意义。采用生态系统服务和权衡综合评估(Integrated Valuation of Ecosystem Services and Tradeoffs,InVEST)仿真模型、皮尔逊系数及四象限模型,揭示安徽省资源型城市水源涵养(WC)、固碳(CS)及粮食(FP)生态系统服务供需的时空变化、权衡协同关系及空间匹配模式,并据此构建生态管理分区框架。结果显示:(1)在2011—2023年,安徽省资源型城市生态系统服务中WC的供给和供需指数均呈上升趋势,需求呈下降趋势;CS的供给和供需指数均呈下降趋势,需求呈上升趋势;FP的供给、需求和供需指数均呈上升趋势;在空间分异上,WC供需指数呈现南高北低梯度格局,CS供需指数空间分布较为均衡,FP供需指数呈现南低北高格局。(2)就供需指数而言,WC生态系统服务与CS为协同关系,FP与WC、CS均为权衡关系。WC、CS及FP均以低-低空间匹配模式为主。(3)粮食生产区为主要功能区,养护为主要管理策略,重点保护为主要管控等级,粮食重点养护区为生态管理分区主要结果。研究可为缓解资源型城市“生态-生产”矛盾、优化国土空间保护格局及促进生态资产价值转化提供决策参考依据。
