Flabellariopteris,a new aquatic fern leaf from the Late Triassic of western Liaoning,China

An aquatic fern leaf, Flabellariopteris mii Sun gen. et sp. nov. from the Late Triassic of Western Liaoning, China, is described and proposed as the type species of the new morphortaxon of the Marsileaceae. The fossil leaves are preserved as impression. No fertile and rhizomatic materials are found. The leaves attached at a common point on the top of the petiole are composed of two leaflets joined basally in an opposite arrangement. The petiole is slender. The leaflet is fan-shaped or semi-circular, and commonly divided into four wedge-shaped lobes. Terminal margin of lobes is usually incised, incisions shallow or deep, with bluntly rounded or notched apex. The veins are conspicu- ously dichotomous, but anastomoses and marginal vein are absent. The unique morphological features, including two- parted thin leaflets, size, shape, veins and slender petiole, indicate that the present specimen represents an aquatic fern, which is the oldest fossil record and the first megafossil evidence assignable to Marsileaceae from the Triassic floras.     

鲁山籍总兵黄得魁事略

鲁山人黄得魁在咸丰八年（1858）至同治元年（1862）间,随胜保往返征战豫、皖、鲁、陕等省,屡立战功,官阶也不断提升。但因其靠山胜保被逮捕赐死,同治二年回籍养病后,黄得魁很快淡出清廷视线。     

倒春寒后不同措施对不同类型冬小麦冻害减灾效果研究

2007年冬小麦遭受晚霜冻害,选择遭受严重霜冻的大穗型冬小麦淄麦12号进行刈割对比试验,同时在冬小麦遭受倒春寒冻害地块以临麦2号为材料进行追施肥、水、化控剂对比试验。结果表明：冬小麦刈割后基部腋芽再次萌发虽可形成一定产量,但与对照相比,单株性状变差,产量明显降低。因此,霜冻后不应刈割,应积极采取科学的补救措施,把灾害造成的损失降到最低。而受冻后及时追施速效氮肥并浇水和喷施植物生长调节剂天达2116减灾效果较好,比未采取任何减灾措施穗数增加63×104hm2,穗粒数增加3.4粒,千料重增加2.5g,增产1536.0 kg/hm2,增产幅度达38.7%。     

晚清官书局研究综述

官书局是晚清重要的官方出版机构,在出版史、文化史上占有重要的位置。自清末至今,学者们对官书局的研究各有侧重,显示了研究旨趣的不同以及成果的丰富。但研究中仍有不足之处,有待于学者们开展进一步的研究。     

宋末元初江西词派的第一人--刘秉忠及其词

本文对刘秉忠及其词进行探索,认为刘秉忠想出人头地,但未必是想以为蒙古统治者服务达到出人头地的目的,他为蒙古统治者服务有出于不得已的一面。刘秉忠为蒙古统治者服务与那些投降蒙古统治者的南宋官员不同,他祖籍为汉族人,他出生地为蒙古统治者占领地。刘秉忠随忽必烈征战云南、鄂州等地,保护了南宋许多臣民。刘秉忠向蒙古统治者建言,保存了汉族儒家的许多文化传统。刘秉忠的词内容丰富,他被《元名儒草堂诗余》编辑者作为此书的第一人,这似乎反映此书编辑者以蒙古高官和颂扬蒙古王朝的词掩盖追悼宋王朝的主旨。     

晚唐咏史诗对社会兴亡人生成败的归因简析

咏史诗,是在混乱的政治、战乱的社会和颓靡的时代里,晚唐诗人解剖历史和人生的结晶。其对王朝兴亡、人生成败的归因是辩证、全面而深刻的。诗人形象演绎了“成由勤俭破由奢”的历史逻辑;对女人非祸水作了鲜明有力、符合逻辑的辩正;在强调德、能等人事因素影响兴亡成败的同时,肯定了“时”“运”“命”等非人事的偶然因素对兴亡成败的影响力。     

晚清民国期刊中有关镇江金山寺的诗词考

金山是历史文化名城镇江的第一名胜、标志景观。晚清民国时期更有许多期刊关注过镇江金山寺,刊载了众多描写金山寺的诗词。这些诗词的作者身份多样,诗词中描写的景物与现在金山寺的格局、景致和风貌相类似,从中可以看出金山寺虽历经沧桑,但它却拥有着独特的宗教地位和文化传承的延续性,这就更加彰显了镇江悠久的历史与深厚的文化底蕴。     

Paleoclimate change recorded in the red earth and brown-yellow sediment of Late Quaternary for northeastern part of Guangdong Province, south to the Nanling Mountains, China

The paleoenvironment indicated by the geochronology, major oxides SiO2, Al2O3 and TOFE （Fe2O3 ＋ FeO）, and CIA （Chemical Index of Alteration） value of the red earth and brown-yellow silt primarily characterized by the Linjiang stratigraphic section, based on the geological investigation of Late Quaternary along the river banks of northeastern part of China＇s Guangdong Province, south to the Nanling Mountains, allow us to hypothesize that the red earth on the first terrace in northeastern part of Guangdong belongs to reticulated red clay developed in a hot-wet environment of the last interglacial period （132-73 ka BP）, similar to the monsoon environment in the northern margin of modern tropical zone, while the overlying brown-yellow silt layer mainly accumulated in a monsoon environment of warm temperate zone in the last glacial period （73-11 ka BP）, with the aeolian sand LJ3 representing an extreme period of worsening climate. Such a hypothesis corresponds well with predecessors＇ research on the paleoenvironment indicated by abundant fossils in both south and east to the Nanling Mountains. Hence, it follows that the bioclimatic zone did experience a large and rapid vicissitude in northeastern part of China＇s Guangdong Province, and even in the full extent of the region south to the Nanling Mountains from the last interglacial period to the last glacial period, with the red earth being replaced by the brown-yellow silty sediment, and even maybe with the Ailuropoda-Stegodon Fauna being replaced by the Penghu Fauna. This study may provide an important geological demonstration for the environmental response to global change in China＇s low latitudes on a 10 ka scale.     

清末桂西南地区地缘政治形态的变迁及其影响

清末桂西南地区的地缘政治形态包括地缘政治环境、行为、心理、思想和格局等若干方面。中法战争是桂西南地区地缘政治形态变迁的转折点,英法两国的地缘政治角逐是桂西南地区地缘政治形态形成的主要原因。从1884年的中法战争起;桂西南地区的地缘政治地位就处于上升趋势,桂西南地区的经济和文化近代化发展加速,1907年南宁被迫自开为商埠,广西的地缘政治中心随之转到南宁,1910年滇越铁路通车后,法国将主要注意力转向云南,广西边疆安全形势趋缓,桂西南地区的地缘政治地位骤降,导致以龙州为中心的桂西南地区近代化进程中断。