西藏昂仁湖全新世硅藻记录与环境演变

通过西藏昂仁湖剖面硅藻的组合、种数、生态习性和年沉积速率特征得出该地区在１１０００￣６０００ａＢＰ间经历了寒冷期（１１０９５￣９９７０ａＢＰ）→温和期（９９７０￣９８７０ａＢＰ）→升温期（９８７０￣９７７０ａＢＰ）→凉干期（９７７０￣８７４０ａＢＰ）→超高温期（８７４０￣８５９０ａＢＰ）→高温期（８５９０￣５９７０ａＢＰ）的演变序列,同时提出并论证了硅藻对温度变化的响应通常比对其他环境要素更敏感的     

Land Use Change and Its Effect on Environment Based on Farmers＇ Behaviors： A Case Study in Agricultural Areas of Tibet, China

In the case study in Agricultural Area of Tibet, the process and characteristics of farmers‘ land use were surveyed by semi-structural interview questionnaire. By comparing the change of land covers and farmers‘ land decision in two periods, the spatial connection of them was obtained. And the relations among farmers‘ land decision, land use change and environment were examined by calculating emergy and value flow. The results show that: hunting the maximal profits is the primary aim of farmers‘ land decisions farmers‘ land decision is incompatible with sustainable land use presently; farmers‘ land decision and land cover can be embodied spatially by each others the change of farmers‘ land decision can be monitored by observing the change of land cover, and the sustainability of farmers‘ land decision can be appraised by calculating emergy and value flow.     

Floristic Characteristics of the Rare and Endangered Plants and the Conservation Countermeasures in Tibet, China

The floristic elements and the geographical distribution are analyzed in this paper based on statistics of elements of rare and endangered plants in Tibet. The results have been gained as following:① According to ““““the National Important Wild Conservative Plants List (List 1)““““ and ““““the National Important Wild Conservative Plants List (List 1)““““, there are a total of 54 plant species (48 genera and 33 families); ② The geographical elements are very complicated in Tibet with 12 of 15 distribution patterns of genera classified byacademician Wu; ③ There are obvious temperate genera with 28 genera accounting for 60.40% of the total genera; ④ There are abundant endemic speciesaccounting for 18.52% of total species but poor endemic genera; ⑤ The geographical distribution is uneven and a great of species distribute in the areas be-tween 1 000 m and 3 500 m above sea level; ⑥ To protect the rare and endangered plants efficiently, six conservation measures are proposed, and 35 species are suggested for the conservative plants of the autonomous conservation level.     

西藏措勤地区的中新世布嘎寺组

分布于西藏措勤县城北西江若拉一带的富钾火山岩曾被划属达多群,地层时代属古新世至始新世.作者测制了这套火山岩地层的剖面,获得的同位素年龄为15.8 Ma和15.9 Ma,属中新世.这一发现填补了冈底斯山北部中新世富钾质岩浆活动的空白,为进一步研究青藏高原形成和演化提供了重要资料.根据岩性组合、地层时代及区域地层对比,将这一套中新世的富钾火山岩地层命名为布嘎寺组.     

西藏毛腿沙鸡心脏的形态学观测

对1例雌性西藏毛腿沙鸡的心脏进行了形态学观测。结果表明：左右心房大小差别不明显，右心房壁较薄，右心室内表面平滑，腔内有两条乳白色细条索从室中隔腹后部走向心室壁；左心室壁较厚；在心室基部附着三个乳头肌。右房室口有两个肌质瓣；左房室口有三尖瓣；主动脉和肺动脉口各有3个半月瓣。心相对比为1.2％。同时还测量了瓣膜的高度、心室壁厚度、心脏外部各径等有关解剖学数据。     

西藏旅游业发展的区域社会基础研究

旅游业作为西藏自治区国民经济和社会发展重要产业,自改革开放以来,一直被区域经济学研究所重视,尤其是“九五”以来,西藏的旅游业不仅为区域国民经济的发展提供了强有力的空间,同时也为西藏区域社会的可持续发展指明了方向。文章试图从西藏区域社会的发展基础、生产力结构、社会教育文化的发展以及区域协调所需的各种环境分析,提出了西藏旅游业发展的社会基础。     

西藏传统文化的荣格学研究

荣格最具独创性的心理学理论就是“原型”理论。“阴影”与“面具”作为两个最主要的原型,在人与外界环境的交互作用中起着非常重要的作用,同时这两个原型又是互相矛盾的。我们通过分析自性原型来说明人应该如何对待包括阴影与面具在内的矛盾两极性的问题,并结合西藏传统文化对原型进行了初步地剖析与探讨。     

藏山羊的生态地理分布及其生态类型

采用实地调查及生态地理比较法等方法研究表明，藏山羊主产区约分布在北纬２６度－３６度之间的生态地理区，以我国青藏高原为分布中心，藏山羊有两个生态类型，即高原型和山谷型，二者其分布地区的自然生态环境、羊的体格、毛被特征、解剖特征、血液生理指标及生化遗传标记等方面均有差异，可按不同的生态类型进行开发利用。     

西藏南迦巴瓦峰地区发现高压麻粒岩

在西藏南迦巴瓦峰的西侧,沿雅鲁藏布江右岸,出露大片麻粒岩相片麻岩,其中含大量基性麻粒岩包体,特别是在直白东沟,我们发现了一些高压基性麻粒岩包体,与麻粒岩一起构成一个高压麻粒岩带,该带的西北紧邻雅鲁藏布江蛇绿岩带,向东南变为角闪岩相和绿片岩相岩石,构成了一个较完整的下地壳剖面.高压基性麻粒岩包体为透镜状,单个透镜体大小从几十厘米到几米不等,其长轴及内部面理与围岩片麻理一致.包体核心较新鲜,由近等量的粉红色石榴子石和绿色辉石组成,石榴子石和辉石有时呈条带状相间出     

略论西藏斯匹提页岩的地层分布

本文列出了斯匹提页岩地层的一些新剖面,并进行了划分、对比,讨论了斯匹提页岩地层的底、顶界线及沉积环境。