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西部大开发是党和国家的英明决策,对西部和全国的可持续发展具有重要的战略意义。而对西部的自然环境背景状况如何认识,则直接关系到西部开发能否得以持续、顺利的进行。那么,西部地区自然环境状况如何?未来几十年、几百年的演化趋势怎样?对西部开发有何影响?为此,记者专门采访了中国科学院院士、国际第四纪联合会副主席、中科院西安分院院长安芷生。安院士说,对西部地区自然背景、比较优势、开发中的困难的初步分析,将有益于国家制订西部开发的总体规划,突出重点及分步实施。只有科学地认识西部自然环境背景状况,西部开发才能够得以持续顺利的进行。我国西部地区土地辽阔,人口密度小。大体可划分为黄土高原区、西北干旱区、青藏高寒区和西南山地丘陵区。西北地区东部为东亚季风控制,西南五省则多受西南季风影响。荒漠和无植被地区约占整个西部面积的35%,加之草原和稀树灌木草原所占面积,草原荒漠和无植被地区约占西
The great development of the western region is the wise decision-making by the party and the country and has an important strategic significance for the sustainable development of the west and the whole country. However, how to understand the background of the natural environment in the west is directly related to whether sustainable development of the western region can be carried out smoothly and smoothly. So what is the status of the natural environment in the western region? How are the evolutionary trends in the coming decades and how it will affect the development of the western region? To this end, the reporter interviewed academicians of the Chinese Academy of Sciences, Vice Chairman of the International Quaternary Federation, Xi’an Branch Dean An Zhizheng. An academician said that a preliminary analysis of the natural background, comparative advantages and difficulties in the development of the western region will benefit the state in formulating the overall plan for the development of the western region, giving prominence to priorities and implementing step by step. Only by scientifically understanding the background of the natural environment in the western part of the country can the development of the western region continue smoothly and smoothly. The vast land in western China has a small population density. Generally can be divided into loess plateau area, northwest arid area, Qinghai-Tibet alpine area and southwestern mountainous hilly area. The eastern part of Northwest China is controlled by the East Asian monsoon, while the five southwestern provinces are mostly affected by the southwest monsoon. Desert and no-vegetation areas account for about 35% of the entire western area, combined with the area of grassland and savannah grasslands, desert prairie and vegetation-free areas account for about