期刊论文

中文

地理信息世界

1672-1586

2020

27

6

42-47

10.3969/j.issn.1672-1586.2020.06.007

本校为其他机构

长株潭城市群是我国区域一体化发展的典型试验区,客观揭示其城市化时空格局对理解区域发展状况和人地关系具有重要意义。基于1994-2013年间DMSP/OLS夜间灯光数据,参考城市建成区统计数据确定最佳阈值提取长株潭城市群建设用地,利用扩展速率、扩展类型、扩展模式、景观指数等指标方法分析了长株潭城市群城市化过程。研究发现:①城市群年平均城市化速率达48.3 km2/a,扩展类型以填充型为主,外延型存在一定周期波动;②面状城市化前期处于主导地位,2002-2010年基期线状城市化比例逐步增加,2010-2013年基期点状城市化逐渐出现;③景观形态特征日趋复杂,城市群一体化发展在快速推进中,长株潭三市经济核心...

Changsha-Zhuzhou-Xiangtan (CZT) Urban Agglomerations as a typical study area of regional integrative development in China,has the significant importance on revealing the human relationship and further understanding distribution of the urbanization spatiotemporal patterns.The open data source DMSP-OLS nighttime light data from1994 to 2013 were adopted.The threshold of nighttime light was optimized to extract urban construction land with the referenced statistical data of urban built-up area.CZT urban agglomerations land expansion in urbanization...