Welcome to visit Scientia Silvae Sinicae，Today is

Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (2): 99-110.

Previous Articles     Next Articles

Estimation of Urban Building Rooftop-Received Solar Energy by LiDAR and Irradiation Model in the Urban Vegetation Shading Environment

Cao Lin1, Dai Jinsong1, Pang Yong2, Zhao Bing1, Xu Jianxin3, Li Zengyuan2   

  1. 1. College of Forest Resources and Environment, Nanjing Forestry University Nanjing 210037;
    2. Institute of Forest Resources Information Techniques, CAF Beijing 100091;
    3. Engineering of Surveying and Mapping Institute, Jiangsu Province Nanjing 210013
  • Received:2013-05-14 Revised:2013-11-14 Online:2014-02-25 Published:2014-03-11
  • Contact: 李增元

PDF (PC)

841

Abstract:

In this research,vegetation and building parameters were extracted accurately by using multi-feature fusion and object-oriented classification with LiDAR and CCD data,based on the digital elevation model calculated by the refined information extraction algorithm using LiDAR. By integrating hemispherical viewshed solar radiation model,the individual-building based rooftop-received solar radiation was mapped across four seasons,and the shading effects of rooftops by neighborhood trees were quantitatively estimated. The result demonstrated that: compared with the building structure parameters extract from sole LiDAR data,the results by the integration of LiDAR and CCD had a higher accuracy; it also reflected the seasonal dynamics of the shading effects by high-rise buildings and the shading on low-height buildings by surrounded tall trees; there existed a positive correlation between vegetation structure parameters and rooftop-received solar reduction,whereas the influence by building structure parameters was mild and the general trend was not significant.

Key words: airborne LiDAR, rooftop-received solar energy, renewable energy, urban vegetation, solar radiation model

CLC Number: