赵禾苗,阿里木江·卡斯木

• 1:新疆师范大学地理科学与旅游学院
• 2:新疆师范大学丝绸之路经济带城镇化发展研究中心

摘要(Abstract)：

随着"西部大开发"推进和"丝绸之路经济带"的加快建设,西部地区城市化快速发展带来一系列环境问题,为探究乌鲁木齐市主城区地表热环境演变规律及影响因子,该文利用2000、2005、2010、2015和2018年Landsat数据,借助GIS和遥感技术支持,提取土地利用/覆被信息(LUCC)和新型建筑用地指数(IBI),利用大气校正法获得响应的地表温度(LST),处理后形成表征地表热环境的变量,进一步对LUCC和IBI与地表热环境强度变量进行分析。结果表明:(1)2000—2018年,土地利用/土地覆被变化明显,近19年来,耕地、草地、林地、未利用地分别减少了183.27、30.14、16.01、28.04 km~2。其中,耕地面积降幅最大;城市建设用地增加了257.33 km~2,变化率达20.02%。(2)随着建成区不断扩展,城市高温区域快速扩张,次高温区和极高温区域逐渐向沙依巴克区、头屯河区推进。(3)2000—2018年,乌鲁木齐主城区热岛比例指数分别为0.14、0.18、0.30、0.27和0.32,总体呈逐年上升趋势,热环境演变明显。(4)LST与IBI呈显著正相关,线性拟合良好,5年相关系数分别为0.580、0.487、0.778、0.556和0.611。

关键词(KeyWords)： 城市热环境;大气校正法;土地利用/覆盖变化;乌鲁木齐市

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41661037);; 新疆维吾尔自治区研究生科研创新项目(XJ2020G237)

作者(Author): 赵禾苗,阿里木江·卡斯木

DOI: 10.16251/j.cnki.1009-2307.2021.08.025

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