论环境变迁研究中的若干区域性问题

环境变迁是具有多因素相互作用，多等级区域分异，多尺度的韵律变化的复杂过程，其中任何变化都不可能脱离区域分异规律而独立存在。许多变化过程及其主导因素随着区域等级的变化有很大的不同，从而在不同等级的区域会表现出不同的规律性，在努力探索人类自下而上环境在时间上的变化规律，着力于提高时间分辩率的同时，对于这些变化的区域分异规律应给予足够的重视，特别是注意提高空间分辩率。     

从“静脉高营养”名词的变迁看名词审定

一 历史回顾 1971年,北京协和医院外科在引进氨基酸、维生素等营养基质的基础上,参考了美国Dudrick、Wilmore等学者的文献,将较为正规的静脉营养技术应用于临床.     

New discovery of submerged forest remains in Shenhu bay, Fujian Province, and its environmental significance

The authors have made a further investigation on the tidal-zone paleoforest remains found in the Shenhu bay,Fujian Province.By surveying (scale of 1:500) and numbering of the remains,65 tree trunks were found.They are relatively concentrated in three different regions from south to north.Their growing ages ranged from 45 a to 100a. 22 ancient trunks‘ sections with low degree of carbonization show that the paleoforest was composed of Keteleeria Carr., Morus L.and Gleditsia L.^14C dating shows that the paleoforest was living in 9420-6760 aBP.Later it stopped developing and was buried by the alluvial aggradation caused by the sea level rise.     

Paleoclimatic significance of mineral magnetic properties of loess sediments in northeastern Qinghai-Tibetan Plateau

Loess deposit in the northeastern Qinghai-Tibetan Plateau offers an excellent record of climate and environment changes in this region.We have conducted multiparameter mineral magnetic analyses of smaples of loess deposits from the Dongchuan,Lalakou and Panzishan sections.The methods used include magnetic susceptibility,fre-quency-dependent suceptibility,temperature-dependent susceptibility,isothermal remanent magnetization acquisibility.Maghemite and hematite is also present in the loess layers and paleosol horizons.The higher concentration of maghemite in paleosols suggests that the formation of maghemite occurred during in situ pedogenesis,which plays an important role in the enhancement of the magnetic susceptibitily.Similar to that in the Chinese Loess Plateau lying to the east of the Liupan Mountains,magnetic granulometry in the studied loess and paleosols is predominantly pseudo-single-domain(PSD). However,the mean grain-size of the ferrimagnetic minerals in loess is evidently coarser (larger PSD and multiomain-like) than in paleosols (mainly PSD).The magnetic susceptibility of loess and paleosols is positively correlated with the content of ultrafine magnet-ite/maghemite grains,and hence with the intensity of in situ pedogenesis.Therefore,the enhanced magnetic susceptibility in the studied loess-paleosol sequences can be interpreted as being due to climatically induced in situ pedogenesis.     

创建我国创业板资本市场：新制度经济学视角下的分析

政府供给主导型的制度变迁是我国创业板资本市场得以创建的基本手段，创业板资本市场的创建不但是发展中小企业的需要，同时也是我国资本市场深化和发展的重要步骤。     

厦门东屿红树林区环境变迁对鸟类的影响

比较厦门东屿红树林区两次鸟类调查数据(2002年1月~2003年1月与1996年1月~1997年1月),分析当地生境的变化对鸟类物种组成及主要鸟类类群数量的影响.与1996年相比,2002年的鹭类、鸥类和鸭类年累计数量分别从2 4443、023和873只减少到352、73和10只,而鸻鹬类从3 088只增加到5 478只.滩涂、红树林面积减少及人为活动增加是鹭类、鸥类和鸭类数量减少的主要原因,而鸻鹬类数量增加与新增荒废裸地生境为其提供理想休息场所关系密切.     

屠隆与西湖岳王庙

作为浙江人的屠隆,诗文中有许多西湖风光的描写,在与杭州官员、社会名流交往的书信中也有较多关于岳王庙的议论.通过对屠隆诗文作品的解读来探究明代西湖岳王庙前塑像的变迁,以及明人对待岳飞、秦桧、王氏、万俟禼、张俊等人的看法及争议,由此透视出其特有的时代意义.     

对大学生诚信缺失现象的社会学思考

诚信是中华民族的传统美德,也是高校素质教育的重要内容之一。近年来大学生群体中出现的诚信缺失现象表明,高校诚信教育非常必要。本文从社会学的角度,通过调研,解读当前大学生群体中所存在的诚信缺失现象,联系当前我国社会转型期的时代背景,剖析了大学生诚信缺失现象形成的原因,进而提出加强高校诚信教育的对策。     

青岛市水污染现状及对策分析

1.概况青岛市地处胶东半岛,低山丘陵占全市总面积的45.5%,河流水系的发育和分布多受地形地貌的控制,其河道径流均属季风雨源型,故季节性较强,除大沽河(境内段)、胶莱河、桃源河、流浩河、现河等少