Journal of Geographical Sciences ›› 2005, Vol. 15 ›› Issue (1): 123-128.doi: 10.1360/gs050115

• Climate and Environmental Change • Previous Articles    

Road construction and landscape fragmentation in China

LI Shuangcheng, ZHOU Qiaofu, WANG Lei   

  1. College of Environmental Sciences, Peking University;
    The Key Laboratory for Earth Surface Processes, Ministry of Education, Beijing 100871, China
  • Received:2004-06-09 Revised:2004-11-21 Online:2005-03-25 Published:2005-03-25
  • Supported by:

    National Natural Science Foundation of China, No.40271106; No.90202012

Abstract:

The landscape fragmentation caused by road construction has many direct and indirect impacts on wildlife and ecosystems. By using the GIS and statistic software of fragmentation computation, a comprehensive index, road-induced landscape fragmentation index (RLFI), is proposed to quantify the degree of landscape fragmentation resulting from different levels of road constructions. The results show that road-induced fragmentation index in China ranges from 0.987 to 3.357, with a mean of 1.846 in 2002. The regional differences of landscape fragmentation are obvious and scoring sequence is: North China (2.65) > East China (2.62) > Central China (2.60) > South China (2.51) > Southwest China (2.34) > Northeast China (2.19) > Inner Mongolia (1.88) > Northwest China (1.67) > Qinghai-Tibet Plateau (1.65). The anisotropic analysis indicates that the variation of fragmentation index in east-west direction is larger than that in south-north direction.

Key words: landscape fragmentation, road construction, China