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西藏自治区是我们伟大社会主义祖国的美丽而富饶的边疆,全区海拔平均在4,000米以上,素有世界屋脊之誉。青藏高原自晚白垩纪隆起后,特别是第三纪晚期以来大面积、大幅度的持续抬升,对高原本身及其周围的环境带来深刻的影响。为了探索高原隆起的原因和高原隆起后自然环境的变化,研究西藏自然资源的特点及其利用改造的方向和途径,中国科学院组织了青藏高原综合科学考察队,自1973年起在西藏进行了持续4年的考察,对森林植被的考察也是其中的一个组成部分。由于过去缺乏系统的考察和及时的宣传报道,所以一提到西藏,在人们心目中往往会出现严酷的自然条件、连绵的雪山和高原、稀少的森林植被等一系列贫瘠而荒凉的画面。
The Tibet Autonomous Region is a beautiful and fertile borderland of our great socialist motherland. At an average elevation of 4,000 meters above sea level, the Tibet Autonomous Region is known as the roof of the world. After the uplift of the Cretaceous, especially since the late Tertiary, the Qinghai-Tibet Plateau has been greatly raised in a large area and has greatly affected the environment of the plateau itself and its surroundings. In order to explore the causes of the uplift of the plateau and the changes of the natural environment after the uplift of the plateau, and to study the characteristics of natural resources in Tibet and the directions and ways of their utilization and transformation, the Chinese Academy of Sciences organized a team of comprehensive scientific expeditions to the Qinghai-Tibet Plateau. Four years of investigation, the study of forest vegetation is also an integral part. Due to the lack of systematic investigation and timely publicity and reports in the past, when it comes to Tibet, there are often barren and inhospitable scenes of harsh natural conditions, rolling snow mountains and plateaus, sparse forest vegetation and so on.