曼谷城市扩张生态环境效应

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 曼谷城市扩张生态环境效应 DOI: 10.5846/stxb201607191470 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 海南省科技合作专项资金项目（KJHZ2015-14）；海南省重大科技计划项目（ZDKJ2016021）。 Urban expansion and its ecological environmental effects in Bangkok, Thailand Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:利用1990、2000、2010和2015年4期Landsat数据和2000-2015年的MODIS NDVI数据，开展了泰国曼谷地区近25年来城市扩张分析，包括城市建设用地扩张时空变化和扩张模式分析、扩张的生态环境效应分析以及扩张驱动力分析。结果表明：（1）自1990年以来，曼谷城市建设用地面积持续增长，经历了先快后慢再快的增长过程。城市扩张主要沿东北方向，且在距离城市中心14-20km的范围内扩张最为明显，扩张模式以边缘式和填充式为主。（2）在城市化进程中，植被和热岛对城市扩张分别有不同的响应。植被绿度整体呈下降趋势，下降明显的地区位于距城市中心10-20km的范围内，即城市建设用地明显扩张的区域。热岛分布与城市建成区分布具有空间一致性，自1990s以来，热岛效应整体增强，但局部变异越来越不明显。（3）曼谷城市扩张受到自然地理条件、社会经济、城市布局等多重因素的影响。 Abstract:On the basis of Landsat images acquired in 1990, 2000, 2010, and 2015 and MODIS NDVI datasets acquired from 2010 to 2015, we analyzed urban expansion in Bangkok, including the spatio-temporal characteristics of built-up land, ecological-environmental effects (including vegetation greenness and land surface temperature), and the main driving factors of urban expansion. The results showed that (1) the built-up land areas in Bangkok has expanded continuously since 1990, showing a rapid-slow-rapid change trajectory. Urban expansion occurred mainly in the northeast direction and within the range of 14-20 km from the city center. The expansion patterns followed infilling pattern and edge-expansion pattern. (2) Urbanization affected vegetation greenness and heat island. Vegetation greenness declined overall, and a significantly decreased area was in the range of 10-20 km from the city center, which was in accordance with the main urban expansion area. Similarly, the spatial distribution of the heat island was coincident with urban expansion. The heat island increased overall, although local variations were less obvious. (3) Geographical conditions, social economy, and city layout were the main driving factors in urban expansion. 参考文献 相似文献 引证文献