کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7456086 1484494 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantifying the effects of settlement size on urban heat islands in fairly uniform geographic areas
موضوعات مرتبط
علوم انسانی و اجتماعی علوم اجتماعی توسعه
پیش نمایش صفحه اول مقاله
Quantifying the effects of settlement size on urban heat islands in fairly uniform geographic areas
چکیده انگلیسی
City size is closely related to urban heat island intensity (UHII). To examine the relationship more accurately, it is necessary to eliminate the effects of landforms and climatic differences on urban heat islands (UHIs), through selecting settlement clusters in a large plain within a similar biome as the study area. This study selected 1124 land use clusters (cities, towns, and big rural settlements) and demarcated surrounding buffer areas; each buffer width equaled the radius of the clusters. The results showed that UHI increased with growth in cluster size, and the relationship could be described using a logarithmic function. For clusters with an area >2 km2, the city size accounted for about 60% of the variance in UHII during the night and only about 30% during the day. For clusters with areas of <2 km2, the uncertainty in the relationship increased significantly and the relationship became very weak. In addition, our study showed that daytime UHII was higher than nighttime UHII, particularly for large cities with a size >10 km2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Habitat International - Volume 49, October 2015, Pages 100-106
نویسندگان
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