The Impact of Urbanization Process on Vegetation Coverage—A Case Study of Dalian City, Liaoning Province

当前社会城市化进程速度加快，城市建设，工业发展等大量占据城市土地面积，导致城市地表覆盖物类型发生明显变化，其中人造地表面积增加，森林植被覆盖面积减小等问题尤为突出，本文旨在通过对地表覆盖物变化的研究，通过运用归一化植被指数像元二分模型，对大连市植被覆盖率的时空演变以及各类地表覆盖物的变迁进行深入研究，以探究大连市城市发展与植被覆盖率之间的相互关系。本文同时是在践行可持续发展理念的背景下进行研究，力求研究城市化进程与植被覆盖率之间的关系，对于探究人类与自然之间的协调发展，以及寻求可持续发展的途径，具有深远的意义。本文从两方面对大连市的城市化进程和植被覆盖率之间的关系进行分析，分别是大连市地表覆盖物变化情况和大连市NDVI指数变化情况，定量研究2010年至2020年之间的数据，通过对比分析调查等方法分析出两者之间的关系，探讨城市化过程中人类的生产生活对大连市的生态环境的影响。对城市化进程中如何保护生态系统具有重要理论意义，也为在城市发展中生态环境得到更好保护和更合理的利用方式提供基础。At present, the speed of social urbanization is accelerating, urban construction, industrial development, etc. occupy a large number of urban land area, resulting in obvious changes in the type of urban surface cover, among which it is obvious to see the increase of artificial surface area, the decrease of forest vegetation cover area and other problems, and at the same time, through the research and analysis of the change of NDVI index in Dalian, the change of coverage area in Dalian can also be clearly seen. At the same time, this paper conducts research under the background of practicing the concept of sustainable development, and strives to study the relationship between urbanization process and vegetation coverage, which is of profound significance for exploring the harmonious development of man and nature and exploring sustainable development. This paper analyzes the relationship between urbanization process and vegetation coverage in Dalian from two aspects, namely the change of land cover in Dalian and the NDVI index of Dalian, quantitatively studies the data between 2010 and 2020, analyzes the relationship between the two through comparative analysis and survey. It has important theoretical significance for protecting ecosystems at the same time in the process of urbanization, and also provides a basis for better protection and more reasonable utilization of ecological exchanges in urban development.