中国公路沙漠自然区划研究

为了满足公路工程建设的多样性、层次性需求,揭示沙漠地区自然环境要素的时空分布规律及其对公路建设的影响,进行中国公路沙漠自然区划。结合沙漠地区公路建设及区域非地带性分异规律,基于一般区划原则,提出了采用综合性原则和主导因素原则相结合、主导指标和辅助指标相结合的公路沙漠自然区划方法。形成了以沙漠综合状态指数为主要指标;以沙丘高度、风沙强度、植被覆盖和气温年较差等自然环境要素为辅助指标的公路沙漠区划指标体系。制定了中国公路沙漠自然区划的分区方案,并采用地理位置 强度 名称的3段命名方法,将中国公路沙漠区划为3个区:东部弱中强度影响区,中部中强强度影响区,西部中弱强度影响区,进而得出中国公路沙漠自然区划图。

Desert Natural Division of Highway in China

To satisfy the variety and hierarchy of the highway construction and discover the spatio-temporal distribution of the desert natural environment and its affection on the highway construction,the desert division of highway in China was carried out.Based on general principle and method for the division,the method and index system for the highway desert natural division were put forward by combining the desert highway construction and the non-regional diversity law.On the one hand,the division combines the comprehensive principle with the dominant factor principle;on the other hand,the division combines the main index with the auxiliary indexes.The main index was defined as the desert comprehensive character index,the auxiliary indexes as the dune height,sand and wind strength,vegetation overlay and the annual temperature range.Desert natural division program of highway was worked out.By the three-section denomination method(the geographical position,the strength and the name),the countrywide desert highway can be divided into three subsections:the eastern weak-medium affection region,the middle medium-strong affection region,and the western medium-weak affection region.Furthermore the desert division map of highway in China was given out.