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A platform for research: civil engineering, architecture and urbanism
Urbanization effect on soil temperature in Nanjing, China
Highlights ► Soil temperature significantly depends on synoptic conditions. ► Urban soil temperatures are generally higher than that of rural soils. ► Urban–rural soil temperature difference presents significant temporal–spatial characteristics. ► Soil temperature in urban area is much more variable than that in rural area.
Abstract Temporal and spatial changes in soil temperature were monitored in rural and urban areas within Nanjing city, China to investigate the influence of increasing urbanization. Diurnal changes in soil temperature as a function of depth (i.e., 10, 20, 30, 40, 50, 60, 100 and 150cm below ground surface) were measured continuously for one year (from June 2009 to June 2010) at two locations. Soil temperature was also measured at selected times at 600 locations within urban and rural areas. The results show that both the urban and rural soil temperature profiles are strongly tied to the prevailing air temperature, while the synoptic influence on soil temperature occurs mostly at depths less than 60cm. Based on spatial averages for the studied one year period, the urban soil is 1.21°C warmer than the rural soil. The nature of the temporal and spatial changes in soil temperature varies according to whether a given location is rural or urban. The average daily, monthly and seasonal difference ranges from 0.29 to 3.03°C, 0.62 to 2.0°C and 0.84 to 1.51°C, respectively, between urban and rural locations. Soil temperature variations generally decrease with increasing depth and increase with urbanization.
Urbanization effect on soil temperature in Nanjing, China
Highlights ► Soil temperature significantly depends on synoptic conditions. ► Urban soil temperatures are generally higher than that of rural soils. ► Urban–rural soil temperature difference presents significant temporal–spatial characteristics. ► Soil temperature in urban area is much more variable than that in rural area.
Abstract Temporal and spatial changes in soil temperature were monitored in rural and urban areas within Nanjing city, China to investigate the influence of increasing urbanization. Diurnal changes in soil temperature as a function of depth (i.e., 10, 20, 30, 40, 50, 60, 100 and 150cm below ground surface) were measured continuously for one year (from June 2009 to June 2010) at two locations. Soil temperature was also measured at selected times at 600 locations within urban and rural areas. The results show that both the urban and rural soil temperature profiles are strongly tied to the prevailing air temperature, while the synoptic influence on soil temperature occurs mostly at depths less than 60cm. Based on spatial averages for the studied one year period, the urban soil is 1.21°C warmer than the rural soil. The nature of the temporal and spatial changes in soil temperature varies according to whether a given location is rural or urban. The average daily, monthly and seasonal difference ranges from 0.29 to 3.03°C, 0.62 to 2.0°C and 0.84 to 1.51°C, respectively, between urban and rural locations. Soil temperature variations generally decrease with increasing depth and increase with urbanization.
Urbanization effect on soil temperature in Nanjing, China
Tang, Chao-Sheng (author) / Shi, Bin (author) / Gao, Lei (author) / Daniels, John L. (author) / Jiang, Hong-Tao (author) / Liu, Chun (author)
Energy and Buildings ; 43 ; 3090-3098
2011-08-01
9 pages
Article (Journal)
Electronic Resource
English
Urbanization effect on soil temperature in Nanjing, China
| Online Contents | 2011
| British Library Online Contents | 2008