上海市城市化进程中热环境响应的空间评价

被引：26

作者：

钱敏蕾

徐艺扬

李响

蔡芫镔

谢玉静

王祥荣

机构：

[1] 复旦大学环境科学与工程系

来源：

中国环境科学 | 2015年 / 02期

关键词：

土地利用/覆盖变化; 人口; 城市热岛; 温度植被指数; 气候变化; 上海市;

D O I：

暂无

中图分类号：

X16 [环境气象学];

学科分类号：

0706 ; 070602 ;

摘要：

利用Landsat TM/ETM+遥感数据解译与反演得到上海市1997～2009年的土地利用/覆盖类型图及热岛强度分布图,并分析其演变趋势,引入温度-植被指数(TVX)并采用TVX空间法定量研究了以建设用地扩张、生态用地减少为特点的城市化过程引起的热环境效应.研究表明,1997～2009年,上海市人口呈现从中心城至郊区的流动趋势;热岛强度分布与城市化建设密切相关,呈现"葫芦串-葡萄串-摊大饼型"的蔓延模式;以牺牲生态用地为代价的建设用地扩张造成研究区域地表温度的上升及植被覆盖度的下降,其中林地减少所引起的热环境效应最大.研究可为城市规划决策过程中不同城市化空间的拓展情景提供其可能的环境响应结果,从而完善气候变化适应性对策,推进城市生态系统的可持续发展.

引用

页码：624 / 633

页数：10

共 21 条

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