曼谷城市扩张生态环境效应

发布时间：2018-05-12 11:39

本文选题：城市扩张 + 植被　；参考：《生态学报》2017年19期

【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]:Based on the Landsat data of 2010 and 2015 and the MODIS NDVI data from 2000 to 2015, the analysis of urban expansion in Bangkok, Thailand, over the past 25 years, including the temporal and spatial changes of urban construction land expansion and the analysis of expansion patterns, was carried out. The analysis of ecological environment effect and driving force of expansion. The results show that since 1990, the area of urban construction land in Bangkok has continued to grow, which has experienced the process of increasing first and then slowly. Urban expansion is mainly along the northeast direction, and the expansion is most obvious within the range of 14-20km from the city center. The expansion pattern is mainly marginal type and filling type. (2) in the process of urbanization, vegetation and heat island have different responses to urban expansion. The green degree of vegetation showed a downward trend as a whole, and the area with obvious decline was located within the range of 10-20km from the center of the city, that is, the area where the land for urban construction was obviously expanding. The distribution of heat island is consistent with the distribution of urban built-up area. Since 1990's, the heat island effect has been strengthened as a whole, but the local variation is becoming less and less obvious.) the urban expansion of Bangkok is subject to natural geographical conditions and social economy. The influence of many factors such as urban layout.
【作者单位】：山东农业大学信息科学与工程学院;海南省地球观测重点实验室;中国科学院遥感与数字地球研究所数字地球重点实验室;
【基金】：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)
【分类号】：X171.1;X21

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