基于地表能量平衡的厦门岛城市功能区人为热排放分析
Analysis of Anthropogenic Heat Discharge of Urban Functional Regions Based on Surface Energy Balance in Xiamen Island
查看参考文献39篇
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文摘
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人为热排放不仅是城市热岛形成的重要因子,而且是与能源消耗密切相关的指标,对其大小和变化特征进行分析有利于减缓城市热岛与节能减排.本文以厦门岛为研究区,利用2009年多时相的Landsat TM影像和地表能量平衡模型反演出不同季节的人为热排放,在此基础上结合IKONOS影像解译的城市功能区,分析不同类型城市功能区人为热排放的时空变化特征.结果表明:不同类型城市功能区的人为热排放均在夏季达到最大,春季最小;工业区的人为热排放一直高于其他类型的城市功能区;工业区人为热排放高值区主要集中厦门岛西部传统的重点工业区,交通区人为热排放高值区的空间分布与厦门岛“三纵四横”的交通干线分布格局相吻合,居住区人为热排放高值区主要集中在旧城区,商业及公共设施区人为热排放高值区主要集中在单体建筑大的商圈和公共设施;总体上厦门岛西部的人为热排放比东部要高.这种时空分布的差异性与用地类型、人口数量与经济发展程度密切相关,而且建筑物的密度、高度和下垫面的材料通过影响其他地表通量来改变人为热排放的大小.通过分析不同城市功能区人为热排放的时空变化特征,可以从更微观的角度理解城市热环境和能源利用现状,为促进城市可持续发展提供理论依据. |
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其他语种文摘
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Anthropogenic heat discharge not only constitutes the cause of urban heat island (UHI) formation, but also is an important indicator related to energy consumption. It is important to analysis the magnitude and variation of anthropogenic heat discharge in order to mitigate UHI effect and improve energy efficiency. This paper examined the spatio-temporal variation of anthropogenic heat discharge in the Xiamen Island, China using Landsat TM data and meteorological data. First, the anthropogenic heat discharge was estimated with a remote sensing- based surface energy balance model. Then, the urban functional regions derived from IKONOS data were combined with the anthropogenic heat discharge. The results indicate that the anthropogenic heat discharge in different types of urban functional regions reaches the maximum in summer and the minimum in spring. The anthropogenic heat discharge of industrial area was higher than those in the other regions for all seasons. The high anthropogenic heat discharge occurred in the old industrial bases in the west of Xiamen Island. In traffic area, high anthropogenic heat discharge was observed in the Changan Road, Jiahe Road, Chenggong Avenue, Xianyue Road, North Hubin Road-Lvling Road, South Hubin Road-East Lianqian Road. In residential area, high anthropogenic heat discharge was observed in the old town. The high anthropogenic heat discharge occurred in the large single buildings in commercial and public area. Overall, the anthropogenic heat discharge in the western part of Xiamen Island was higher than that in the east. The differences of spatial and seasonal distribution were closely related to land cover types, population and the degree of economic development. Moreover, the density and height of the buildings and materials of land cover change the amount of anthropogenic heat discharge by affecting other surface fluxes. This paper brings a more microscopic perspective by analyzing the spatio-temporal variation of anthropogenic heat discharge in different urban functional regions to study urban thermal environment and energy utilization, as well as to provide a theoretical basis for promoting urban sustainable development. |
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来源
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地球信息科学学报
,2018,20(7):1026-1036 【核心库】
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DOI
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10.12082/dqxxkx.2018.170450
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关键词
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人为热排放
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时空变化
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城市功能区
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地表能量平衡
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厦门岛
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地址
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中国科学院城市环境研究所, 中国科学院城市环境与健康重点实验室, 厦门, 361021
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中国科学院大学, 北京, 100049
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浙江省地理信息中心, 杭州, 310012
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1560-8999 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金项目
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文献收藏号
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CSCD:6282211
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