土地利用/覆盖变化的遥感分析

Remote Sensing Analysis of Land Use/Cover Change

以安徽省阜阳市城区(颍州区、颍东区、颍泉区)为研究对象,基于2007、2012年Landsat-7ETM+影像和2018年Landsat-8影像,使用遥感图像处理平台(Environment for Visualizing Images,ENVI)软件对阜阳市城区2007—2018年土地利用/覆盖变化做具体定量分析研究。根据三期土地利用类型的数据,分析各个土地利用类型的发展趋势以及各种土地利用产生变化的主要原因,为阜阳市城市规划和环境建设提供了一定的依据。结果表明,11 a间随着阜阳市经济的快速发展和城市化水平不断提高,研究区各土地类型面积发生了很大变化。建设用地面积变化448.27 km^(2),增幅543.57%,耕地面积变化597.52 km^(2)减幅34.74%,裸地面积变化26.00 km^(2),减幅80.68%,这与研究区经济和社会的快速发展密切相关。受到环保政策和环境意识的影响,林地面积增加85.00 km^(2),增幅97.58%,水域面积变化84.35 km^(2),增幅201.39%。

Taking the urban area of Fuyang City,Anhui Province(Yingzhou District,Yingdong District,Yingquan District)as the research object,based on 2007,2012 Landsat-7ETM+images and 2018 Landsat-8 images,with ENVI software,2007—2018 Annual land use/cover changeswas carried out for specific quantitative analysis and research.According to the data of land use types in the third phase,analysis of the development trend of each land use type and the main reasons for the changes of various land use provided a certain basis for the urban planning and environmental construction of Fuyang City.The results showed that with the rapid economic development of Fuyang City and the continuous improvement of the level of urbanization in the 11 years,great changes had taken place in the area of various land types in the study area.The area of construction land changed by 448.27 km^(2),an increase of 543.57%,the area of cultivated land changed by 597.52 km^(2),a decrease of 34.74%,and the area of bare land changed by 26.00 km^(2),a decrease of 80.68%.This was closely related to the rapid economic and social development of the study area.Affected by environmental protection policies and environmental awareness,the area of woodland increased by 85.00 km^(2),with amplitude of 97.58%,while the water area changed by 84.35 km^(2),with amplitude of 201.39%.