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The Effect of Urban Heat Island on Climate Warming in the Yangtze River Delta Urban Agglomeration in China.

Huang Q, Lu Y - Int J Environ Res Public Health (2015)

Bottom Line: The average warming rates of huge cities and megalopolises are significantly higher than those of medium-sized cities and small cities, indicating that the UHI has a significant effect on climate warming (t-test, p < 0.05).Significantly positive correlations are found between the urbanization rate, population, built-up area and warming rate of average air temperature (p < 0.001).Urbanization has a measurable effect on the observed climate warming in the YRD aggravating the global climate warming.

View Article: PubMed Central - PubMed

Affiliation: College of Geography Sciences, Nanjing Normal University, Wenyuan Road, Xianlin University District, Nanjing, 210023, China. flyingfangzi@163.com.

ABSTRACT
The Yangtze River Delta (YRD) has experienced rapid urbanization and dramatic economic development since 1978 and the Yangtze River Delta urban agglomeration (YRDUA) has been one of the three largest urban agglomerations in China. We present evidence of a significant urban heat island (UHI) effect on climate warming based on an analysis of the impacts of the urbanization rate, urban population, and land use changes on the warming rate of the daily average, minimal (nighttime) and maximal (daytime) air temperature in the YRDUA using 41 meteorological stations observation data. The effect of the UHI on climate warming shows a large spatial variability. The average warming rates of average air temperature of huge cities, megalopolises, large cities, medium-sized cities, and small cities are 0.483, 0.314 ± 0.030, 0.282 ± 0.042, 0.225 ± 0.044 and 0.179 ± 0.046 °C/decade during the period of 1957-2013, respectively. The average warming rates of huge cities and megalopolises are significantly higher than those of medium-sized cities and small cities, indicating that the UHI has a significant effect on climate warming (t-test, p < 0.05). Significantly positive correlations are found between the urbanization rate, population, built-up area and warming rate of average air temperature (p < 0.001). The average warming rate of average air temperature attributable to urbanization is 0.124 ± 0.074 °C/decade in the YRDUA. Urbanization has a measurable effect on the observed climate warming in the YRD aggravating the global climate warming.

No MeSH data available.


Related in: MedlinePlus

Locations of the YRDUA (a) and the 41 meteorological stations (b). 1: Longhua; 2: Wuxi; 3: Liyang; 4: Changzhou; 5: Nantong; 6: Dongtai; 7: Gaoyou; 8: Nanjing; 9: Sheyang; 10: Huai’an; 11: Xuyi; 12: Ganyu; 13: Xuzhou; 14: Yuhuan; 15: Hongjia; 16: Longquan; 17: Lishui; 18: Quzhou; 19: Shipu; 20: Yinxian; 21: Shengxian; 22: Jinhua; 23: Dinghai; 24: Pinghu; 25: Hangzhou; 26: Huzhou; 27: Chun’an; 28: Tunxi; 29: Ningguo; 30: Anqing; 31: Wuhu; 32: Chaohu; 33: Hefei; 34: Huoshan; 35: Lu’an; 36: Chuxian; 37: Bengbu; 38: Shouxian; 39: Fuyang; 40: Bozhou; and 41: Dangshan.
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ijerph-12-08773-f001: Locations of the YRDUA (a) and the 41 meteorological stations (b). 1: Longhua; 2: Wuxi; 3: Liyang; 4: Changzhou; 5: Nantong; 6: Dongtai; 7: Gaoyou; 8: Nanjing; 9: Sheyang; 10: Huai’an; 11: Xuyi; 12: Ganyu; 13: Xuzhou; 14: Yuhuan; 15: Hongjia; 16: Longquan; 17: Lishui; 18: Quzhou; 19: Shipu; 20: Yinxian; 21: Shengxian; 22: Jinhua; 23: Dinghai; 24: Pinghu; 25: Hangzhou; 26: Huzhou; 27: Chun’an; 28: Tunxi; 29: Ningguo; 30: Anqing; 31: Wuhu; 32: Chaohu; 33: Hefei; 34: Huoshan; 35: Lu’an; 36: Chuxian; 37: Bengbu; 38: Shouxian; 39: Fuyang; 40: Bozhou; and 41: Dangshan.

Mentions: YRD is located along the central-eastern coastline of China, comprising Shanghai, southern Jiangsu Province and northern Zhejiang Province. This region is one of China’s most developed, dynamic, densely populated and concentrated industrial areas. The YRDUA has grown into one of six influential world-class metropolitan areas, and it plays an important role in China’s economic and social development [22,24]. Generally, the boundary of the YRD varies according to the culture, economy, or geography considered in the different studies. The Yangtze River Delta Regional Plan issued by the State Council of China in May 2010 showed that the YRDUA covered a total of 30 cities including Shanghai, 13 cities in Jiangsu, 11 cities in Zhejiang and 5 cities in Anhui Provinces and excluded 11 cities in Anhui Province (Haozhou, Huaibei, Suzhou, Fuyang, Bengpu, Lu’an, Anqing, Chizhou, Tongli, Xuancheng and Huangshan). However, to discuss the background warming rate and differentiate the UHI contribution, this study referred to the YRDUA as comprising all regions of Shanghai, Jiangsu, Zhejiang and Anhui Provinces (Figure 1).


The Effect of Urban Heat Island on Climate Warming in the Yangtze River Delta Urban Agglomeration in China.

Huang Q, Lu Y - Int J Environ Res Public Health (2015)

Locations of the YRDUA (a) and the 41 meteorological stations (b). 1: Longhua; 2: Wuxi; 3: Liyang; 4: Changzhou; 5: Nantong; 6: Dongtai; 7: Gaoyou; 8: Nanjing; 9: Sheyang; 10: Huai’an; 11: Xuyi; 12: Ganyu; 13: Xuzhou; 14: Yuhuan; 15: Hongjia; 16: Longquan; 17: Lishui; 18: Quzhou; 19: Shipu; 20: Yinxian; 21: Shengxian; 22: Jinhua; 23: Dinghai; 24: Pinghu; 25: Hangzhou; 26: Huzhou; 27: Chun’an; 28: Tunxi; 29: Ningguo; 30: Anqing; 31: Wuhu; 32: Chaohu; 33: Hefei; 34: Huoshan; 35: Lu’an; 36: Chuxian; 37: Bengbu; 38: Shouxian; 39: Fuyang; 40: Bozhou; and 41: Dangshan.
© Copyright Policy
Related In: Results  -  Collection

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Show All Figures
getmorefigures.php?uid=PMC4555247&req=5

ijerph-12-08773-f001: Locations of the YRDUA (a) and the 41 meteorological stations (b). 1: Longhua; 2: Wuxi; 3: Liyang; 4: Changzhou; 5: Nantong; 6: Dongtai; 7: Gaoyou; 8: Nanjing; 9: Sheyang; 10: Huai’an; 11: Xuyi; 12: Ganyu; 13: Xuzhou; 14: Yuhuan; 15: Hongjia; 16: Longquan; 17: Lishui; 18: Quzhou; 19: Shipu; 20: Yinxian; 21: Shengxian; 22: Jinhua; 23: Dinghai; 24: Pinghu; 25: Hangzhou; 26: Huzhou; 27: Chun’an; 28: Tunxi; 29: Ningguo; 30: Anqing; 31: Wuhu; 32: Chaohu; 33: Hefei; 34: Huoshan; 35: Lu’an; 36: Chuxian; 37: Bengbu; 38: Shouxian; 39: Fuyang; 40: Bozhou; and 41: Dangshan.
Mentions: YRD is located along the central-eastern coastline of China, comprising Shanghai, southern Jiangsu Province and northern Zhejiang Province. This region is one of China’s most developed, dynamic, densely populated and concentrated industrial areas. The YRDUA has grown into one of six influential world-class metropolitan areas, and it plays an important role in China’s economic and social development [22,24]. Generally, the boundary of the YRD varies according to the culture, economy, or geography considered in the different studies. The Yangtze River Delta Regional Plan issued by the State Council of China in May 2010 showed that the YRDUA covered a total of 30 cities including Shanghai, 13 cities in Jiangsu, 11 cities in Zhejiang and 5 cities in Anhui Provinces and excluded 11 cities in Anhui Province (Haozhou, Huaibei, Suzhou, Fuyang, Bengpu, Lu’an, Anqing, Chizhou, Tongli, Xuancheng and Huangshan). However, to discuss the background warming rate and differentiate the UHI contribution, this study referred to the YRDUA as comprising all regions of Shanghai, Jiangsu, Zhejiang and Anhui Provinces (Figure 1).

Bottom Line: The average warming rates of huge cities and megalopolises are significantly higher than those of medium-sized cities and small cities, indicating that the UHI has a significant effect on climate warming (t-test, p < 0.05).Significantly positive correlations are found between the urbanization rate, population, built-up area and warming rate of average air temperature (p < 0.001).Urbanization has a measurable effect on the observed climate warming in the YRD aggravating the global climate warming.

View Article: PubMed Central - PubMed

Affiliation: College of Geography Sciences, Nanjing Normal University, Wenyuan Road, Xianlin University District, Nanjing, 210023, China. flyingfangzi@163.com.

ABSTRACT
The Yangtze River Delta (YRD) has experienced rapid urbanization and dramatic economic development since 1978 and the Yangtze River Delta urban agglomeration (YRDUA) has been one of the three largest urban agglomerations in China. We present evidence of a significant urban heat island (UHI) effect on climate warming based on an analysis of the impacts of the urbanization rate, urban population, and land use changes on the warming rate of the daily average, minimal (nighttime) and maximal (daytime) air temperature in the YRDUA using 41 meteorological stations observation data. The effect of the UHI on climate warming shows a large spatial variability. The average warming rates of average air temperature of huge cities, megalopolises, large cities, medium-sized cities, and small cities are 0.483, 0.314 ± 0.030, 0.282 ± 0.042, 0.225 ± 0.044 and 0.179 ± 0.046 °C/decade during the period of 1957-2013, respectively. The average warming rates of huge cities and megalopolises are significantly higher than those of medium-sized cities and small cities, indicating that the UHI has a significant effect on climate warming (t-test, p < 0.05). Significantly positive correlations are found between the urbanization rate, population, built-up area and warming rate of average air temperature (p < 0.001). The average warming rate of average air temperature attributable to urbanization is 0.124 ± 0.074 °C/decade in the YRDUA. Urbanization has a measurable effect on the observed climate warming in the YRD aggravating the global climate warming.

No MeSH data available.


Related in: MedlinePlus