青海高原汉、藏、回族三个民族大学生体质健康水平的比较研究

青海高校在校少数民族学生中,藏族回族学生较多,其他民族占比例较小,为此,做了以上两个民族和汉族学生三个民族学生的健康水平比较研究,以研究三个人数最多的民族学生体质健康水平差异.本研究运用测试法和数据分析法,结果显示,藏族学生的身高体重明显高于汉族和回族,汉族学生体重高于回族;三民族大学生营养状况不佳,其中70%回族男学生和56%的回族女学生体重较低,明显低于藏族、汉族学生营养状况;藏族男女大学生的肺活量、立定跳远、藏族男大学生的握力明显高于均值;三个民族女大学生坐位体前屈指数比较中,汉族学生明显高于均值,藏族女生明显低于均值和回族女生;三民族大学生中,藏族男大学生目前体质总分明显高于均值,其他民族男女学生的该项指标与均值无明显的差异.     

采用数据可听化的地形剖面线分析方法

提出一种使用音高和时值对沿分水线布设的地形剖面线进行分析的方法.以5 m分辨率的数字高程模型(DEM)数据为基础,选取神木县、绥德县、延川县、富县县、宜君县、淳化县等6个典型研究样区,并选择安塞样区对实验结果进行验证.研究结果表明:6个样区分水线剖面线的声音指标存在差异,其声音模式与实际地貌类型存在明显的对应关系;7个声音指标可以直接进行地貌类型的区分,安塞与绥德样区地貌类型最接近,欧式距离为最小值48.456.说明声音指标可以用来分析分水线剖面线特征,比单一的高程信息蕴涵更多的地形起伏、转折信息,可以从乐理角度整体刻画地貌类型.     

An erosional hiatus in Chinese loess sequences revealed by closely spaced optical dating

1 Introduction Loess deposits in China are the thickest and most extensively distributed in the world. Investigations overthe past around one century have significantly im- proved our understanding of the origin, transportation, deposition and evolution o…     

Study on Occupational Hazards and Preventive Measures for the Constructors in Building Qinghai-Tibetan Railway

To analyze the hazard factors for the constructors through the geographic environment along the Qinghai-Tibetan railway. On the basis of the physical examination data of the constructors, we dynamically investigated the impact of the plateau environment on the constructors＇ health. We concluded the adaptation after the plain people entering into the plateau, and the application of the medical security measures and the effectiveness of the Plateau diseases preventing and controlling measures during the construction of the Qinghai- Tibetan railway. The results showed that there existed many occupational hazard factors because of the harsh environment in the Qinghai-Tibetan plateau, and they did a severe harm to the constructors. To take an effective prevention measure could apparently alleviate the occupational hazards, and ensure the safety and health of the constructors. The paper not only provided the valuable experiences for the medical support during the economic construction in the Qinghai-Tibetan plateau areas in the future, but also made a contribution for improving the development of the world plateau medicine.     

黔西北高原药用植物区系的初步研究

本文论述了黔西北高原药用植物的种类组成与区系特征,并分析了它们的分布特点。该区药用植物资源丰富,共有196科,672属,1474种(含种下等级)。其中,古老和原始的科、属不乏其代表。从药用种子植物属的分布区类型的比较分析,该区具有我国15个种子植物属的分布区中的全部类型,表明了与世界各地区植物区系的联系程度。另一方面,该地区的植物区系虽含有丰富的热带成分,但明显偏重于温带性质,这种温带性质可能与该区的地理位置与海拔高度有着重要的联系。     

关于匈奴人种问题的几点认识

“中国北方长城地带”青铜时代居民的人类学资料表明。匈奴人的人种构成具有突出的地域性，不同地区的匈奴人基本延续了较早时期的人种类型。“中国北方长城地带”东周时期南下的牧人在人种类型上属于“古蒙古高原类型”，来源上应与蒙古高原以及外贝加尔石板墓的居民有一定的渊源关系。到战国晚期以后，当长城以北强大的匈奴联盟形成的时候，这部分古代居民很有可能最终加入到了匈奴联盟当中。     

试论昌耀诗歌抒情风格

昌耀的诗歌创作开始于20世纪50年代，他的抒情风格几经历变，但总是超越凡俗，卓然独立于高原之上，以雄奇高邈，以及现代意识塑造了自己的诗歌品质。本文试图从高原情思，史诗气质，现代意识三个方面探讨昌耀诗歌的抒情风格。     

Clinical Analysis of GPT Alteration of Constructors for Qinghai-Tibetan Railroad at Different Altitude Areas

1Introduction Inhighaltitudeareas,thekeyproblemwas hypoxia.Ininternalorgans,themostsensitiveparttohypoxiawasneuralcells,thesecondwas cardiacmuscle,thethirdwaslivercells.In recentyears,theeffectofhypoxicenvironmenton liverhadgraduallybeenbecomingoneofthe importantresearchsubjectsonhighaltitudemedicine.Accordingtoreferences,inhypoxic environment,thestructureofliverissueand enzymeactivityhadchangedforexperimental animalsindifferentaltitude.Butforpeoplein differentaltitudeandindifferentmigrationp…     

Monitoring lake changes of Qinghai-Tibetan Plateau over the past30 years using satellite remote sensing data

During the years 2006–2009,lakes in the Qinghai-Tibetan Plateau(QTP)were investigated using satellite remote sensing strategies.We report the results of this investigation as well as follow-up research and expanded work.For the investigation,we mainly focused on lakes whose areas are more than 1 km2.The remote sensing data that we used included 408 scenes of CBERS CCD images and 5 scenes of Landsat ETM?images in Qinghai Province and Tibet Autonomous Region.All these data were acquired around years 2005–2006.Besides remote sensing images,we also collected 1,259 topographic maps.Numbers and areas of lakes were analyzed statistically,which were then compared with those coming from the first lake investigation(implemented between the1960s and 1980s).According to our investigation,up to and around year 2005–2006,the total number of lakes in the QTP was 1,055(222 in Qinghai and 833 in Tibet),accounting for more than 30%of that of China.Thirty newborn lakes with area[1 km2were found,and 5 dead lakes with initial area[1 km2were also found.Among those 13 big lakes([500 km2),Yamzhog Yumco had seriously shrunk,and it has continued to shrink in recent years;Qinghai Lake had shrunk during the period,but some new researches indicated that it has been expanding since the year 2004;Siling Co,Nam Co,and Chibuzhang Co had expanded in the period.We divided the newborn lakes into six categories according to their forming reasons,including river expansion,wetland conversion,etc.The changes of natural conditions led to the death of four lakes,and human exploitation was the main reason for the death of Dalianhai Lake in Qinghai.We picked out three regions which were sensitive to the change of climate and ecological environment:Nagqu Region,Kekexili Region,and the source area of the Yellow River(SAYR).Lakes in both Nagqu and Kekexili have been expanded;meanwhile,most lakes in the SAYR have obviously been shrunk.These regional patterns of lake changes were highly related to variations of temperature,glacier,precipitation,and evaporation.Our investigation and analysis will provide references for researches related to lake changes in the QTP and the response to climate fluctuations.