SCIENTIA GEOGRAPHICA SINICA ›› 2017, Vol. 37 ›› Issue (10): 1600-1608.doi: 10.13249/j.cnki.sgs.2017.10.018

• Orginal Article • Previous Articles    

Cooling Effect of Green Patche Based on TM Image in Harbin Downtown City

Zhen Yuan(), Xiangli Wu(), Shuying Zang, Changshan Wu, Miao Li   

  1. Key Laboratory of Remote Sensing for Monitoring of Geographic Environment, College of Heilongjiang Province, Harbin Normal University, Harbin 150025, Heilongjiang, China
  • Received:2016-10-24 Revised:2017-01-05 Online:2017-10-20 Published:2017-10-20
  • Supported by:
    National Natural Science Foundation of China ( 41571199);Natural Science Foundation of Heilongjiang Province (QC2016050)

Abstract:

In this study, four years TM images(2001, 2005, 2013 and 2015) were selected as the data and the single window algorithm was employed to study the surface temperature of Harbin downtown city. 30 pieces urban green patches were extracted by using SPOT image. Surface temperature spatial pattern and urban green patches coupling relationship were analyzed, which revealed green patches have an interference effect on the surface temperature spatial pattern of the urban heat island. The results show that: Spatially, the heat island effect was significant in Harbin downtown city, the large area of high temperature region and second-rate high temperature region were distribution in downtown, and extremely high temperature region have point, planar or ribbon distribution characteristics. The urban heat island presents gradually from the old town to the new development and construction characteristics of regional extension from the dynamic. It indicated that the inner average temperature of green patches is associated with its own characteristics, and it have a certain relationship with the space layout and the surrounding landscape pattern. Green patches cooling level and green patches cooling range are positively correlated relationship with green patches area. Green patches cooling level and green patches cooling range are negatively correlated relationship with green patches shape index. Green patches cooling range are positively correlated relationship with green patches perimeter. When green patches area was 0.055 km2, make green patches for cooling efficiency of the surrounding temperature is better; When green patches area was 0.070 km2, make green patches for area efficiency of the surrounding cooling is better.

Key words: Harbin downtown city, cooling effect of green patches, heat island effect, green patches

CLC Number: 

  • K903