基于岩性分区的北京市密云县土地利用分析

为探讨北京市密云县各岩性区土地利用类型、土地利用空间格局,分析岩性对土地利用的影响和约束状况,通过实际调查,并借助GIS软件,将北京市密云县1∶5万地质图进行矢量化,形成岩性分区图,并结合密云县土地利用类型和结构,以7个岩性区为研究单元进行分析.结果表明:密云县的土地利用数量结构中林地占绝对优势,其与岩石的分布密切相关；第四系沉积物类型区的土地利用类型齐全程度最高,优势度很低.岩性差异影响着土地利用在数量结构和空间格局方面的区域性差异.

Analysis of land use based on regional property of rock in Miyun County of Beijing

The purpose of this paper is to probe into the type,spatial pattern of land use in each region of rock property and to analze the effect and restraint of the rock property on the land use in Miyun county of Beijing.The used geological map (1:50,000) of Miyun county of Beijing had regional properties of the rocks s,and was vectorized by actual survey and Arcview GIS.Both maps of local land use and rock property region were united.Seven research areas were analyzed.The results showed that forest land occupied absolute superiority in land use structure of Miyun county,which was related to distribution of rocks.Complete degree of land use type was the highest.Superiority degree is very low in the area of Quaternary System sediments .It is concluded that the land use differences on the quantity structure and spatial pattern were affected to a great extent by the rock property.