A GIS-based urban landscape change analysis of Lanzhou City, China

International Symposium on Lidar and Radar Mapping Technologies Pub Date : 2011-06-12 DOI:10.1117/12.912797

Caihong Meng, Yongchun Yang, Yanjun Liu, Haojie Hu

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Abstract

Well located at the geometric center of China, Lanzhou is one of the typical valley-basin cities in the western China. In this study, we aim to resolve two questions: (1) from the spatial analysis, we want to know what changes have happened on urban landscape characteristics from 1976 to 2004? (2) What is the main driving force behind the changes? This research is based on American quick bird remote sensing image of 2004 with a high resolution of 0.61m and the topographical map of Lanzhou city. In addition, the detailed land use data and some cadastral data in 1976 are collected as well as the current land use data. Based on the calculated result, we analyse the change characteristics of the classlevel metrics and landscape-level metrics of the Lanzhou city. Our results show that the change trend in landscape associated with urbanization of Lanzhou city can be effectively captured by spatial analysis using the remote sensing image and GIS data processing technique, and by calculating several landscape pattern metrics, such as patch density, edge density, Shannon diversity index, contagion, etc.

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基于gis的兰州市城市景观变化分析

兰州地处中国的几何中心，是中国西部典型的河谷盆地城市之一。本研究旨在解决两个问题:(1)从空间分析上了解1976 - 2004年城市景观特征发生了哪些变化;(2)这些变化背后的主要驱动力是什么?本研究以美国2004年高分辨率0.61m快速鸟类遥感影像和兰州市地形图为基础。此外，还收集了1976年的详细土地利用资料和部分地籍资料，以及目前的土地利用资料。在此基础上，分析了兰州市类级指标和景观级指标的变化特征。结果表明，利用遥感影像和GIS数据处理技术，通过计算斑块密度、边缘密度、Shannon多样性指数、传染性等景观格局指标，可以有效地捕捉兰州市城市化相关景观的变化趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Symposium on Lidar and Radar Mapping Technologies

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