基于Landsat卫星的沈阳市土地覆盖变化研究

Research on Change on Change of Land Cover Change of Land Cover Change in Shenyang City Based on Landsat

土地利用、土地覆盖变化(LUCC)是当今遥感领域的重要研究课题,也是地学界、生物学界、环境学界等关注的热点问题之一^([1])。特别是对大城市的土地类型变化研究,有利于揭示城市化进程中的空间变化规律。本文利用沈阳市1990、2000、2010年3期Landsat系列卫星数据,经过空间配准、相对辐射校正、图像增强等预处理,分别对3期遥感图像进行监督分类,提取土地类型转换信息并进行景观格局分析^([2])。结果表明,20年间沈阳市土地覆盖变化主要表现为耕地和建筑用地的转变,其中1990—2000年,耕地和建筑用地均有缓慢增加;而2000—2010年耕地面积明显减少,建筑用地显著增加,城市化进程大大加快。本文成果对沈阳市未来城市规划和可持续发展相关政策的制定有一定的参考价值。

Land use / land cover change (LUCC) is an important research topic in remote sensing field. It is also one of the hot issues of concern in geology, biology and environment. Especially for the study of land types change in large cities, is conducive to reveal the process of urbanization in the spatial changes in the law. In this paper, the Landsat series satellite data of 1990, 2000 and 2010 were used to supervise and classify the three remote sensing images by spatial registration, relative radiation correction and image enhancement. The land type conversion information was extracted and carried out Landscape pattern analysis. The results show that the land cover change in the city of Shenyang is mainly due to the change of cultivated land and construction land in 20 years. Among them, the cultivated land and construction land increased slowly from 1990 to 2000, but the cultivated land area decreased significantly in 2000-2010, the construction land increased significantly, The process of urbanization has been greatly accelerated. The results of this paper have some reference value for the future development of Shenyang city planning and sustainable development.