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首页> 外文期刊>Applied Geography >Analysis of land use/land cover change, population shift, and their effects on spatiotemporal patterns of urban heat islands in metropolitan Shanghai, China
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Analysis of land use/land cover change, population shift, and their effects on spatiotemporal patterns of urban heat islands in metropolitan Shanghai, China

机译：中国上海市区土地利用/土地覆盖变化，人口迁移及其对城市热岛时空格局的影响分析

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摘要

Using time series Landsat TM/ETM+ imagery and demographic data of Shanghai for 1997 and 2008, the relationship between land use/land cover (LULC) change and population shift and their effects on the spatiotemporal patterns of urban heat islands (UHls)were quantitatively examined using an integrated approach of remote sensing, geographical information systems (GIS), and statistical analysis. The results showed that this city has experienced unprecedented urban growth and sprawl during the study period. The developed land increased by 219.50%, approximately 72.52% of which was converted from former cropland (24.79%), fallow land (21.21%), forest and shrub (18.97%), bare land (6.62%), and water (0.93%). Furthermore, in combination with the detection of LULC change, an analysis of the spatially differential growth rates for developed land area and population size revealed an urban-suburban-exurban gradient pattern of population shifting, as evidenced by a sharp increase in developed land area within the middle sub-zones at the urban fringe and the exurban sub-zones beyond the outer traffic ring. Consequently, changes in LULC and population shifts resulted in significant variation in the spatiotemporal patterns of the UHIs due to the loss of water bodies and vegetated surfaces. In the foreseeable future, substantial population growth and urban expansion will continue, especially in the rapidly urbanizing suburban and exurban areas, and thus, the extent and magnitude of UHI effects will continue expanding as well. The relationships between land use, the UHI effect, and regional climate change require that the underlying mechanisms, patterns, and processes of land conversion as well as the response of urban climate should be addressed throughout official decision-making processes. Thus, the planners and decision-makers could fully evaluate the environmental consequences of different land development scenarios and therefore improve the scientific basis of future planning and regulations.
机译：利用时间序列Landsat TM / ETM +图像和上海市1997年和2008年的人口统计数据，定量研究了土地利用/土地覆盖率（LULC）变化与人口迁移之间的关系及其对城市热岛（UHls）时空格局的影响使用遥感，地理信息系统（GIS）和统计分析的集成方法。结果表明，该城市在研究期间经历了前所未有的城市发展和扩张。已开发土地增加了219.50％，其中约72.52％来自前农田（24.79％），休耕地（21.21％），森林和灌木丛（18.97％），光秃秃的土地（6.62％）和水（0.93％） ）。此外，结合土地利用，土地利用变化和土地利用变化的检测，对发达土地面积和人口规模的空间差异增长率的分析揭示了人口迁移的城市-郊区-郊区之间的梯度格局，这一点已得到证明，该区域内发达土地面积急剧增加。市区边缘的中间分区和外围交通圈以外的郊区分区。因此，由于水体和植被表面的丧失，土地利用，土地利用变化和种群变化的变化导致UHIs的时空格局发生重大变化。在可预见的将来，人口的大量增长和城市扩张将继续，特别是在快速城市化的郊区和郊区地区，因此，UHI影响的程度和程度也将继续扩大。土地使用，UHI效应和区域气候变化之间的关系要求在整个官方决策过程中应对土地转换的基本机制，模式和过程以及城市气候的响应。因此，规划者和决策者可以充分评估不同土地开发方案的环境后果，从而改善未来规划和法规的科学基础。

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