Proceedings of 14th Youth Conference on Communication An Analysis of Urban Green Landscape Pattern in Chengdu City Based on CBERS/CCD 1 2 3 3 DAN Bo , DAN Shang-ming , XU Hui-xi , XUE Wan-rong 1. Sichuan Provincial Meteorological Observatory, Chengdu 610072, P.R.China 2. Sichuan Province Agrimeteorological Center, Chengdu 610072, P.R.China 3. Institute of Engineering Surveying, Sichuan College of Architectural Technology, Deyang 618000, P.R.China
[email protected] Abstract: Based on GIS and CBERS/CCD which was obtained on June 16, 2006, patches of urban green in the main urban areas of Chengdu are extracted using many quantitative indicators and by method of decision tree classification, according to principles and methods of landscape ecology. Patches of urban green are divided into four grades, and they are respectively small-scale patch, medium-scale patch, large-scale patch and special large-scale patch. The area pro- portion of small-scale patch is 3.8%, and that of medium-scale patch is 11.1%, that of large-scale patch is 22.3% and that of special large-scale patch is 62.8%.The results of fragmentation, contagion, diversity index, dominance and evenness are obtained. They are 0.854, 0.600, 0.657, 0.730 and 0.690 respectively. The research results think that scal- ability characteristics and divisional differences of green patches are obvious. A little number of green whose area is bigger mainly is composed of scenic spots, gardens and universities. There are many problems, for example, connec- tivity of urban green is low, structure of landscape is single, and spatial distribution is unbalanced.