Abstract：
Expressway construction has caused a significant threat to the ecological environment in developing countries, and therefore the variation characteristics of ecological resilience along the expressway in developing countries are of major importance. This empirical study focuses on a typical area within a 2-km range of the Phnom Penh-Sihanoukville Expressway in Cambodia and uses remote sensing and geographic information systems (GIS) technology to analyze the variation characteristics of ecological resilience along the expressway. The results of the study reveal that due to the construction of expressways, the land use types transferred into or out of the land use types increase and furthermore the land use types show a trend of decreasing natural attributes and increasing human attributes. It is found that expressway construction has an observed effect on the transfer rate of the center of gravity of land use type, and the direction of the center of gravity shifts in the direction of expressway construction. The impact of construction on the ecological resilience of the western region with higher vegetation coverage was higher than that of the eastern region with higher urbanization. The research develops a theoretical evaluation model based on land use type of the variation characteristics of ecological resilience along the expressway, which can be used to enable the sustainability of expressway construction and maintain the regional ecological environment.
摘要：
高速公路建设对发展中国家的生态环境造成了重大威胁,因此，发展中国家高速公路沿线生态恢复力的变化特征具有重要意义。这项实证研究的重点是柬埔寨金边-西哈努克高速公路2公里范围内的典型区域，并利用遥感和地理信息系统（GIS）技术分析了高速公路沿线生态恢复力的变化特征。研究结果表明,由于高速公路的建设,转入或移出土地利用类型的土地利用类型增加，此外，土地利用类型呈现出自然属性减少和人类属性增加的趋势。发现高速公路建设对土地利用类型重心的转移速率有观察到的影响，重心向高速公路建设方向转移。植被覆盖度较高的西部地区建设对生态恢复力的影响高于城市化程度较高的东部地区。研究建立了基于土地利用类型的高速公路沿线生态恢复力变化特征的理论评价模型,高速公路建设的可持续性,维护区域生态环境。
