上海城市地表热环境多时期遥感研究

利用4个时期的上海地区Landsat TM/ETM+影像反演了地表温度.从时间尺度和空间分布两个方面,分析了上海陆域及各区近10年间的热场分布,并采用热岛效应比率进行定量化描述.研究表明,上海的高温区面积在近10年来呈现出逐渐减少的趋势,但在空间分布上具有明显的多中心特征.其中,中心城区、浦东新区、闵行区和宝山区是上海城市热岛的4个主中心,近郊地区则逐渐成为新的城市热中心.随着近10年来上海建成区的迅速拓展,研究区域城市热岛已呈现出明显的多中心化趋势,即多个热中心共同决定了上海的热场分布.因此,为了减缓上海城市热岛的发展,应大力开展这些区域前瞻性的生态建设规划.

Study on the thermal environment of land surface in Shanghai with multi-temporal remote sensing images

TM/ETM+ images of four periods were used to derive Shanghai's land surface temperature(LST).The spatio-temporal distribution of UHI in Shanghai and its districts in the last 10 years was analyzed and quantified with the UHI ratio index.Study results indicate that the area with high LST shows a trend of decrease in shanghai,but characterized with distinctive multiple centers in spatial distribution in the last decade.Central Distric,Pudong District,Minhang District and Baoshan District were found to be the f...