东部温润季冻区公路三级自然区划分析

在全国公路一、二级自然区划基础上,借助模糊数学理论,定量分析处理影响公路自然区划的种种模糊性因素.通过建立模糊聚类分区模型,依据自然因素对公路工程综合影响差异的相近程度对东部温润季冻区进行三级划分,并辅以地理相关分析法对区划界线进行修正.由此得到的区划结果弱化了主观因素影响,更具科学性.同时,应用MapX开发东部温润季冻区公路三级自然区划地理信息系统,建立区划信息空间数据库.运用地理信息系统的空间分析功能,提供高效率的数据管理与信息查询,实现影响公路工程的自然因素信息化和图形化,为各部门的工程技术人员和管理者提供充分的决策依据.

Study on the third rank division of highway in eastern seasonal frost region

On the basis of the first and the second rank division of highway,the fuzzy nature with multifactors is analped using a fuzzy mathematical theory.By developing a fuzzy cluster model,it was zoned according to a similar extent of the general impact with natural factors on the highway engineering,and meanwhile,the results of the model are consistent with the results from the relative analysis of geography.Therefore,the obtained results are more scientific and less subjective.At the same time,the third rank division of highway in east seasonal frost region geographical information system program is built,and data-base is constructed.With regard to the function of GIS analyzing,it can deal with data and query information efficiently.The conditions for highway engineering informational and graphics can be obtained,and a sufficient and reliable decision-making method can be put forward for engineers and managers.