青藏高原科学考察研究的新阶段

<正> 解放后我国对青藏高原组织过多次科学考察,特别是1973年开始的全面、系统的青藏高原综合科学考察,取得了丰硕的成果,在国际上产生了较大的影响。70年代开始的这次针对全部高原的科学考察分为3个阶段:第一阶段(1973—1980年)考察了西藏自治区;第二阶段(1981—1986年)考察了川西、藏东和滇西北的横断山区;第三阶段自1987

NEW ADVANCES IN THE SURVEY AND STUDY OF THE QINGHAI-XIZANG PLATEAU

Since the founding of the People's Republic of China, the state has organized scientific survey of the Qinghai-Xizang Plateau several times and abundant results have been achieved. This work possesses profound impact in the world. However, because the emphasis of the survey in the past was placed primarily on the southern and southeastern parts of the Plateau, the study of its northwestern part is relatively l;ss.In the 1970s, a new survey program started and the whole program was divided into three stages. In the first stage (1973-1980), the Ximao autonomous region- was explored. In the second stage (1981-1986), Western Sichuan province, eastern Tibet, and the Hengduan Mts. in northwestern Yunnan province were explored. In the third stage (begun in 1987), the survey was made in the Karakoram and Kunlun Mts. area. The research in this stage is planned to complete within five years. We have already gained abundant firsthand data. At present, there are still many analyses, appraisals, and experiments awaiting to be done and appropriate summingups of the research works should be deepened as well.Up to now, the new advances gained in the study of the Qinghai- Xizang Plateau include the following respects:1. The geological features and regional evolution of the Plateau2. The upheavals of the Plateau since Late Cenozoic Era3. The characteristics and regionalization of the flora4. The structural types of altitudinal natural belts and the regularity of regional differentiationIn order to promote academic intercourse, the Editorial board of the Journal of Natural Resources and the Qinghai-Xizang Plateau Integrated Scientific Survey Team corporately compile this special issue, publishing the research results of the present stage. It is hoped that this will further the basic study of the natural environment and resources of the region.