不同等级公路对城市土地利用变化及景观格局的影响分析——以西宁市为例  

Analysis on the impact of different grades of roads on urban land use change and landscape pattern--A case study of Xining City

作　　者：马国强[1] 司子黄 黄银洲[1] MA Guoqiang;SI Zihuang;HUANG Yinzhou(College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China;Shenzhen Graduate School,Peking University,Shenzhen 518055,China)

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000 [2]北京大学深圳研究生院,广东深圳518055

出　　处：《甘肃农业大学学报》2023年第3期180-189,共10页Journal of Gansu Agricultural University

基　　金：青海省基础研究计划项目(2018-ZJ-787);国家自然科学基金项目(41971195)。

摘　　要：【目的】交通系统与城市土地利用系统耦合,为明确公路系统与城市土地利用及景观格局的深层次关系,以期对土地集约利用、资源环境与生态保护的统筹协调发展提供理论依据。【方法】以西宁市作为案例,建立土地利用及景观格局指标体系,利用缓冲区分析,探究不同等级公路与各指数间时空变化规律。【结果】发现公路影响域内建设用地占比最高,且比例逐渐增加;各级公路对于不同土地利用类型的影响具有显著差异,且存在空间异质性;乡镇道路及其他道路对景观格局破碎化作用最明显;公路对土地利用及景观格局影响随缓冲区距离增加而减弱,且这一影响域随着经济发展而增大。【结论】表明不同等级公路对土地利用及景观格局变化具有类别选择性和影响方向性差异,同时还存在明显的空间异质性。同时这一影响遵循距离衰减效应,且最大影响距离与城市经济发展、人口经济体量相关。【Objective】The transportation system and urban land use system are coupled to clarify the deep-seated relationship between the highway system and urban land use and landscape pattern,and provide a theoretical basis for the coordinated development of intensive land utilization,resource environment,and ecological protection.【Method】Xining City is taken as a case study to establish a land use and landscape pattern index system,and using buffer zone analysis to investigate the spatiotemporal variation patterns between different grades of highways and various indices.【Result】The results show that the proportion of construction land within the highway influence area is the highest and gradually increasing.Different grades of roads have significant differences in their impact on various types of land use and exhibit spatial heterogeneity.Township roads and other roads have the most prominent fragmentation effect on the landscape pattern.The impact of highways on land use and landscape pattern decreases with the increase of buffer zone distance and this impact range increases with economic development.【Conclusion】The findings indicate that different grades of roads have category selectivity and directional differences in their impact on land use and landscape pattern changes,while exhibiting obvious spatial heterogeneity.Additionally,this impact follows the distance attenuation effect,and the maximum impact distance is related to the city's economic development and population economy volume.

关 键 词：公路交通 土地利用 景观格局 西宁市 

分 类 号：F542.8[经济管理—产业经济] F299.23