摘要
基于知识规则的遥感影像分类方法以及空间网格技术(GRID)通过建立网格内城市建筑用地面积所含的阴影面积比例与容积率的关系,计算每个网格的建筑容积率,进而估算城市不同土地利用类型的建筑面积。结果表明:长春市2003年城市建筑总面积为135.98 km2;用地类型平均容积率为商业用地>公共建筑用地>居住用地>工业用地。基于知识规则的遥感分类方法以及空间网格技术(GRID)应用于建筑容积率估算不仅可以提高建筑容积率估算精度,而且进一步可以估算不同城市用地类型的建筑面积。
Urban building shadows are extracted from SPOT image based on the classification method of knowledge rule. The floor area ratio for every grid cell has been computed through the analysis of the linear relationship between the percent of the building shadows area from building land and the floor area ratio in investigating grid cell. Then the floor area from different urban land use is estimated. In conclusion, it is show that the building floor area in Changchun city is 135.98 km^2 in 2003. The order of floor area ratio of urban land use by magnitude is： commercial land 〉 facilities land 〉 residential land 〉 industrial land. The method of RS classification based on knowledge rule and spatial grid improves not only the precision of the floor area ratio estimation, but also makes the urban land building floor area estimation easier.
出处
《重庆建筑大学学报》
EI
CSCD
北大核心
2007年第1期18-21,共4页
Journal of Chongqing Jianzhu University
基金
中国科学院知识创新工程重要方向项目(KZCX2-SW-320-1)
关键词
遥感
城市用地
建筑面积
容积率
长春市
RS
urban land use
floor area
floor area ratio
Changchun city
